5076 5080.output

* GB785483 (A)

Description: GB785483 (A) ? 1957-10-30

Binding applying machine

Description of GB785483 (A)

PATENT SPECIFICATION 785,483 Date of Application and filing Complete Specification: May 31, 1955. No 15495/55. Complete Speciftcdtion Published: Oct 30, 1957. Index at Acceptance:-Classes 17 ( 1), A 2 B; and -42 ( 1), J 1. International Classification:-A 43 d; COMPLETE SPECIFICATION Binding Applying Machine We, PRIME MANUFACTURING COMPANY, of blank and into contact with the presented edge 445 Union Street, Lynn, Massachusetts, of the sole blank. United States of Ameerica, a Corporation of The invention also consists of an improved the Commonwealth of Massachusetts, United machine as aforesaid incorporating severing States of America, do hereby declare the in means for severing a continuous binding strip 50 vention for which we pray that a patent may in gauged relationship to the starting end of a be granted to us, and the method by which it partially attached strip. is to be performed, to be particularly described The invention still further resides in a in and by the following statement: machine for presenting and attaching binding This invention relates to machines for pre strips of the kind aforesaid to sole blanks con 55 senting and attaching binding strips to sole structed, arranged and adapted for use subblanks and is concerned, with-machines for the stantially as will-be described hereinafter. said 'purpose which are required to present and An embodiment of the invention will now be attach binding strips of the kind which are described with particular reference to the adapted to be applied to a marginal portion of a accompanying drawings in which: 60 surface of a sole blank and to the peripheral Figure 1 is a view of the machine in

front edge of the sole blank and which after applica elevation, tion provides an upstanding portion around the Figure 2 is a corresponding plan view, perimeter of the sole blank Figure 3 is a fragmentary view of the machine The present invention has for its primary as seen from the left in Figures 1 and 2, and 65 object to provide an improved machine for the Figure 4 is a fragmentary view showing the purpose aforesaid which incorporates improved cutting blades operatively gauged in severing presenting and attaching means for binding position. strip of the kind hereinbefore referred to The frame of the machine includes a column, The invention has for a further object to not shown, supporting an overhanging head 10 70 provide a machine for the purpose aforesaid in which is journaled a driven shaft 9 having a with a cutting unit for severing a continuous pair of eccentrics which operate feeding feet 12 binding strip in gauged relationship to the causing them to move alternatively in generally starting end of a partially attached strip elliptical paths with a flat feeding component. Accordingly the' invention consists of an The frame includes a lower outwardly pro 75 improved machine for presenting and attaching jecting portion 11 which carries all the other binding strips of the kind aforesaid to sole operative instrumentalities of the machine blanks incorporating a freely rotatable binding through the mediumh of an auxiliary casting or strip mupporting roll adapted to position and auxiliary frame 13 pivoted about a shaft 46 to support the binding strip as it is brought to the the main frame part 11 The auxiliary frame 13 80 place of application, a bevelled roll the bevelled is formed at its outer end as a vertical undercut surface whereof serves to support the sole blank downwardly extending guideway 14 and upon from beneath when the sole blank to be operated this is adjustably mounted a carriage 15 conupon is in the machine and at the same time to trolled in its vertical position by an adjusting apply the relevant portion of the binding strip screw 16 which is threaded into the lower end 85 to the marginal portion of the supported surface of the guideway 14 Projecting outwardly from of the sole blank, and an edge gauge roll which the upper end of the carriage 15 is a boss 17 is adapted to engage and press the relevant part in which is journaled a short shaft, not shown, of the binding strip into a right angle position carrying a flat roll 18 which is thus rotatably relatively to the supported surface of the sole mounted for free movement about a horizontal 90 lPrice 3 s 6 d l 785,483 axis The roll 18 acts at the upper portion of its rig to support and position the binding strip by engaging' its bottom edge as it is brought to the point of application.

The carriage 15 has an outwardly projecting arm 19 to which is adjustably secured a plate 20 that extends transversely toward the right as seen in Figure 3 and across the outer face of the roll 18 The plate 20 is adjustably secured to the arm 19 by a bolt 21 which it is slotted to receive. At the outer end of the plate 20 is secured a vertical bracket 22 and upon the upper end of this is mounted for free rotation a bevelled corrugated work-supporting roll 23 The bracket 22 lies close to but does not touch the outer face of the roll 18 The roll 23 is rotatable about an axis inclined approximately 450 to the horizontal so that the upper portion of its surface is substantially horizontal and lies at a level above the top of the rim of the flat roll 18. The roll 23 is provided with a slightly projecting rim which, in cooperation with an edge gauge roll 24 which rotates about a vertical axis, serves to urge the vertex of the angled section of the binding strip into a vertex of right angled formation beneath the sole as shown in Figure 4. In the case where the binding strip includes an upstanding cover flange the circulator deflector turns the flange down above the surface of the sole so that it may be adhesively attached thereto in a known manner. The auxiliary frame 13 is provided with a pair of spaced upstanding bosses 28 and 29 in which are provided bearings for a horizontal shaft 30 At its rear end the shaft carries a projecting arm 31 and to the outer end of this is attached a vertically disposed tension spring 32 secured at its lower end to an angle bracket 32 ' The arm 31 carries an adjustable stop screw 33 which bears upon the surface of the frame 13 and so adjustably determines the initial angular position of the shaft 30 As seen in Figure 1, the shaft 30 is free to rock about a horizontal axis in a clockwise direction lifting the arm 31 against the tension of the spring 32, the shaft when released and the parts carried by it being automatically returned to the initial position determined by the setting of the stop screw 33. Fast upon the other end of the shaft 30 is a sleeve 34 having a radially extending boss 35. Upon this boss is pivotally mounted -a vertical plate 36, merging at one end into a handle 37 and at the other carrying the lower cutting blade 38 The boss 35 provides bearings for the plate 36 that permit the plate to rock about an axis disposed at a substantial angle to the axis of the shaft 30 As shown in Figure 1, this axis extends rearwardly and downwardly at an angle of about 453 but it will be seen that the axis will approach a vertical position as the shaft 30 is rocked in lifting the lower cutting blade 38 The plate 36 also carries an outwardly projecting journal stud 39 upon which is pivotally

mounted a plate 40 having a circular boss 41 provided with slots for stop screws 42 which are threaded into the plate 36 and limit the relative angular movement of the blade carrying parts The plate 40 merges outwardly into a handle 43 between which and the handle 37 is interposed a coil spring 44 tending always 76 to separate the two handles to some such position as that shown in Figure 1 as determined by the stop screws 42 The plate 40 carries at its forward end the upper blade 45 and in initial position of the parts the blades 75 38 and 45 are open and maintained by the spring 32 in position below and at one side of the work support provided by the rolls 18 and 23 The plate 36 with its associated parts is mounted for free swinging movement about the 80 axis of the boss 35 which, as will be seen in Figure 1, is disposed at right angles to the axis of-the -shaft 30 and initially inclined at an angle of about 45 to the horizontal. In operating the machine above described, 85 a flat sole blank 50 is presented upon the rolls 18 and 23 with the end of the binding strip 51 caught between the presented edge of the insole 50 and the edge gauge roll 24 and with the upstanding portion of the binding strip 90 caught between the outer face of the roll 24 and the rim of the bevelled roll 23 When the machine is set in operation the feed feet 12 advance the sole away from the operator as seen in Figure 2 and the binding strip, which is 95 adhesively coated upon its flange 51 ' and other blank contacting portions, is adhesively and progressively attached to the margin of the sole blank This operation continues as indicated in Figure 2 until the previously attached 100 end of the binding strip is brought around with the sole into proximity to the lower blade 38. The machine is then stopped with the sole in some such position as that shown in Figure 2. The operator then depresses the handles 37 and 105 43 raising the lower gauging blade 38 about the horizontal axis of the shaft 30 and swinging it outwardly about the inclined axis of the boss 35 until it makes contact with the attached end of the binding strip 51 as shown by the dotted 110 lines in Figure 2 which represent the lower blade 38 in gauging position Having located the blades in this manner the operator swings the lower handle 43 upwardly and the binding strip is severed at a gauged point such that 115 it will exactly butt against the previously attached end of the binding strip As soon as the strip has been severed, the handles 37 and 43 are released and the shearing blades are returned to their lowered inoperative position 120 The machine may then be restarted and the sole run through to complete the attachment of the binding strip. It will be seen that the flat side face of the lower blade 38 acts as a gauging element and 125 that its shearing edge cooperates with the

upper blade 45 in severing, the binding strip at the predetermined gauged point The auxiliary frame 13 is herein shown as mounted on the main frame of the machine to 130 gauged relationship to the starting end of a partially attached strip. 6 A machine according to the preceding claim 5 in which the binding strip severing 45 means is movable from an initial inoperative position into a severing position when required. 7 A machine according to the preceding claim 6 in which the severing means incorporates a pair of blades one of which is pivotally 50 mounted to swing about a horizontal axis and is adapted to serve as a gauge and the other of which is pivotally mounted on the blade aforesaid and is adapted to be operated for performing a severing operation as required and means 55 for yieldingly holding the pivotally mounted gauging blade in an initial position to one side of the binding strip supporting roll and below the level of the upper portion of the rim thereof 6 8 A machine according to the preceding claim 7 in which means is provided for enabling the pivotally mounted gauging blade to be held stationary in the gauging position by the operator and in which means is provided for causing 65 the severing blade to swing on the gauging blade for effecting a severing operation whilst the gauging blade is held in the gauging position. 9 A machine for presenting and attaching 70: binding strips of the kind aforesaid to sole blanks constructed, arranged and adapted for use substantially as described herein and illustrated in the accompanying drawings. C L WILSON, A M I Mech E, Chartered Patent Agent, Phoenix Chambers, 84 Colmore Row, Birmingham, 3, and at Tudor House, Bridge Street, Walsall, Staffordshire, Agent for Applicants. swing about a transverse shaft 46 The auxiliary frame is held up against a stop bolt in the position shown in the drawings by a spring and may be depressed by the operator to facilitate the introduction and removal of the work.

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* GB785484 (A)

Description: GB785484 (A) ? 1957-10-30

Improvements relating to pin bars for tentering machines


PATENT SPECIFICATION Inventor: GUSTAV MOHRING 785,484 2) Date of Application and filing Complete Specification May 31, 1955. No 15598/55. ytir Complete Specification Published Oct 30, 1957. Index at Acceptance: -Class 42 ( 1), A 19 C 2. International Classification: -D 06 h. COMPLETE SPECIFICATION Improvements relating to Pin Bars for Tentering Machines We, FAMATEX G M B H, of Stuttgart-Kornwestheim, Germany, a company organised under the laws of Germany, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention concerns improvements relating to pin bars to be used on textile tentering machines, particularly for the high-temperature treatment of fabrics or the like during which the temperature must be kept within close limits In such treatment, it is difficult to secure an equally high temperature over the entire width of a web, because the tenter chains and the metal pin bars carired by them cool off outside the drying chamber and have to be reheated on passing through the said chamber, so that the temperature at the edges of the web is subject to considerable fluctuation and is generally different from the temperature at the middle of the web In order to reduce the influence of the colder chains, it has already been proposed to insert thermallyinsulating connections between the pin bars and the chain links This has proved to reduce, but not to eliminate, the drawback referred to above. According to the present invention, a pin bar of metal having the pins for passing through the edge of the material rigidly fixed in it is provided with spacing means for preventing thermally conductive contact between the said material and the face of the metal bar. The spacing means may, in particular, comprise a protective layer, of lower thermal conductivity, on the metal pin bar, or thickened butt portions of the pins below their point portions, or boss-like

elevations, above the plate-material of the bar, in which the pins are mounted and which may in some cases themselves be secured in bores in the said bar, or spacing pins, shorter than the operative pins, which are disposed between the latter. With such pins bars, it is possible, for example when " fixing " fabrics made of fully synthetic threads in a high temperature zone of a drying machine at temperatures between and 250 C, to produce a satisfactory uniform result in the material, whereas it has always been observed with the known bars that the pinned edges of the fabric are not fixed as thoroughly as the middle portion thereof The advantages achieved by the invention are also particularly notable in the case of the crease-proofing of fabrics, for which high temperatures are exclusively employed. Embodiment of the invention by way of example are illustrated in the accompanying drawings, in which:Figure 1 is a perspective view of a pin bar, Figure 2 a section through part of a different pin bar, Figure 3 a section through part of another pin bar and Figure 4 a perspective view of yet another pin bar. The plate-like metal pin bar 1 illustrated in Figure 1 has a number of pins 2 arranged in the usual manner For the purposes of the invention, however, the point portions of the pins are stepped up with a shoulder to butt portions 3 of larger diameter In use, the material will pass over the points, but is held away from the bar by the shoulders. In the bar 1 of Figure 2, the bar 1 is formed with a boss-like elevation 4, preferably with a flat top, projecting above the face of the bar in the region of each pin 2 The elevations are produced in one piece with the plate-material of the bar, namely by pressing, casting or the like The pins 1, of the usual shape, are inserted from below, suitably by being pressed in into corresponding bores provided in the bar 1 at the middles of the elevations 4 The elevations 4 serve to hold the material away from the bar. In the arrangement shown in Figures 3, each lof the pins 2, again of the usual shape is mounted in a separate plug 5, preferably of cylindrical shape as shown but possibly conical, which is disposed in turn in a corresponding bore 6 in the plate material of the bar 1, the bores being provided in rows or any other required arrangement Suitably, the pins 2 are inserfed -in the plugs 5 and the latter in the bar ' being pressed in, the pressing of the pins into the plugs being effected before the insertion of the plugs in the bar When the conical pins are pressed into the plugs, the latter are enlarged slightly and this contributes to a securer hold of the said plugs when they are pressed into the bar However, it is still possible to press out the plugs for replacement purposes. Rustless steel or other non-rusting or noncorroding metal may, for

instance, be used as the material for the plugs 5 and needles 2. Lower-quality material, such as tinned brass plate or the like, is however generally adequate for the bar 1. The plugs 5 may alternatively be made of a relatively thermally insulating material. The bores for holding the pins 2 in the bar 1 or in the plugs 5 are produced with an inclination to the face of the bar or to the axes of the plugs corresponding to the required inclination of the pins. In the arrangement of Figure 4, there are provided, between each two adjacent pins 2 of known shape separate shorter spacing pins 7 which are blunt and, as illustrated, may advantageously have convex rounded heads, preferably in the form of mushroom-shaped caps 8. These spacings pins, like the other arrange. ments described above, reliably prevent direct contact of the web of material with the large surface of the metal pin bar. Instead of the above-described arrangements or, possibly, in combination therewith, the face of the metal bar 1 from which the pins 2 project may be provided with a thermally insulating protective layer, suitably a coating of synthetic resin or other material having lower thermal conductivity The mechanical strength of such a layer or coating is relatively immaterial, as the pins 2 are held in the plate metal of the bar 1.


* GB785485 (A)

Description: GB785485 (A) ? 1957-10-30

Improvements in flyer slubbing frames


PATENT SPECIFICATION 785,485 01 M k Date of Application and filing Complete Specification: June 6, 1955. No 16136/55. Application made in France on June 10, 1954. a ___ W t Complete Specification Published: Oct 30, 1957. Index at Acceptance: Class 120 ( 2), D 2 B 2. International Classification: DO 2 d. COMPLETE SPECIFICATION Improvements in Flyer Slubbing Frames. I, CLAUDE DELESALLE, a French Citizen, of 10, Boulevard Vauban, LILLE (Nord) France, do hereby declare the invention, for which I pray that a patent may be granted to me, and the method by which it is to be performed, to be particularly described in and by the following statement: The present invention relates to improvements in flyer stubbing frames and particularly to means for obtaining false twisting in such frames. It is known that in flyer slubbing frames the weak part of the roving is that located between the top of the flyer and the delivery roller since in this region it only possesses half the final twist and by this fact it is liable to stretch easily. The present invention permits the quality of the roving to be improved in flyer stubbing frames by imparting to the roving between the delivery roller and the top of the flyer a temporary twist greater than at least 50 % of the final twist It consists in providing a funnel situated above the top of the flyer tube and driven coaxially with the latter and having a rim of a diameter greater than that of the flyer tube and engaged by the roving in its path between the delivery rollers and the top of the flyer so that the roving bears against and rolls on the rim and thereafter enters the funnel without touching the inner wall thereof, intermediate the large and small diameter ends thereof. The funnel may have an outer diameter two or three times larger than the outer diameter of the flyer tube on which it is fitted and the rim is preferably roughened, striated or channelled, and raised in relation to the upper level of the flyer tube so that the roving rolls on this edge and thus takes a false twist. It is further characterised by a flange fixed around the funnel for the purpose of preventing the roving from sliding below the -45 funnel at the moment of lifting of the lPrice 3 s 6 d l bobbins. As a variation the said flanges may be formed by a ring of fan blades for blowing air on to the flyers of the frame during the operation of the machines 50 The accompanying drawings show diagrammatically by way of non-limiting example two forms of construction of the invention:

Fig 1 shows the profile of the two rows of 55 bobbins of a flyer frame with the funnels arranged according to the present invention, Fig 2 shows in section a funnel with its flange shown in plan on Fig 3, Fig 4 is a view in elevation of the funnel 60 with the flange arranged to form a fan, Fig 5 is a view in plan of the funnel shown on fig 4. The Tovings la and lb on leaving the drafting section of the frame represented dia 65 grammatically by the final rollers 2 and 3, pass into the funnel 4 rubbing against the peripheral rim 5 of the funnel and leave through a lateral hole 6 as in the case of flyers 7 of knowvn type On leaving the flyers 70 the rovings are wound on to the bobbin 8. It will be understood that by rubbing on the rim 5 which is preferably striated or channelled as shown on Figs 3 and 5, the rovings roll on this edge 5 and thus take a 75 false twist It will be understood that the rovings pass over the rim or edge 5 and then pass into the funnel to touch the smaller diameter exit at the base thereof. As the angle calculated to obtain the neces 80 sary friction for the twist depends on the position of the flyers, the funnel 4 b fitted to the rear spindles should be higher than the funnel 4 a fitted to the front spindles. To prevent the rovings from sliding be 85 neath the funnel at the moment of lifting the bobbins it is advisable to fix a flange 9 on the funnel 4. As a variant as shown on Figs 4 and 5 the flange may be formed by a ring 10 supported 90 PL' ce 75 F, + 785485 by blades 11 which form fan blades blowing on to the flyers of the frame during operation of the machine. By the arrangement described according to the present invention it is ensured that-the rovings receive a temporary or false twist which avoids breakage and uncontrolled extension and there is obtained a better regularity of the fibres in the roving ' By the difference and calculated height of the funnels there is obtained regularity of twist between the first and second rows of bobbins. By the flange of the funnel it is ensured that the roving which drops at the moment of lifting the bobbin is carried by the flyers when the machine is re-started; A By the fan blades on the flange of the funnel the fibres which are deposited on the flyers are removed. In summary the method and arrangement described according to the present invention permit an increase in production, of the weight of the bobbin, of the number of spindles per worker, of the limit of spinning and of the speed of the spindles.

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* GB785486 (A)

Description: GB785486 (A) ? 1957-10-30

Improvements relating to dyeing textile materials and films

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The EPO does not accept any responsibility for the accuracy of data and information originating from other authorities than the EPO; in particular, the EPO does not guarantee that they are complete, up-to-date or fit for specific purposes.

tr, S t 1 X _ P A T E T S PE I F;A T PATENT SPECIFICATION 785,486 Date of Application and filing Complete Specification: June IS, 1955. No 17283/55. Application made in Switzerland on June 16, 1954. Application made in Switzerland on March 11, 1955. Complete Specification Published: Oct 30, 1957. Index at acceptance:-Classes 2 ( 2), B 2 B 2; and 15 ( 2), B 2 C( 1 A 6: 2 C), B 2 K(IA: ID: 2 84: 3 B 4: 4 84), B 2 L( 2: 3: 5 A: SD). International Classification:-D Olf D 06 p. COMPLETE SPECIFICATION Improvements relating to Dyeing Textile Materials and Films ERRATUM SPECIFICATION No 785,486 Page 1, line 54, for "hydrocarbon " read "hydrogen" THE PATENT OFFICE,

August 1st, 1958. radical or an amino alkyl radical which amino alkyl radical may if desired be substituted, m and p denote the numerals 1 or 2, and in which at least one of the radicals R' and R' must be an amino alkyl group which may if desired be substituted. Compounds of the aforesaid general formula comprise for example the two following subclasses: 1) Aromatic phenolic hydroxy compounds which contain an alkyl radical united to the nucleus which nucleus may if desired be halogenated in which the amino group is attached to the aromatic nucleus through a methylene group which is in the o or p position to a nuclear hydroxyl group. These compounds can be obtained according to the Mannich reaction (see Organic Reactions Vol I, p 303 et seq, Wiley, New York 1942) from aromatic hydroxy compounds of the formula lPrew A'(-OCW CH-CH), V by reaction with amines of the formula R.-NH-R, wherein the radicals A', R, and R and the numeral N have the previously defined significance. The above-named epoxides may be prepared from the corresponding hydroxyaromatic compounds by reacting them by known methods with glycerol-epihalogenides such as epichlorhydrin in the presence of alkaline agents which are capable of splitting off halogenohydric acids. Textile materials or films which can be dyed with acetate rayon dyestuffs may be cellulose esters such as acetyl cellulose, also polyamides such as nylon and perlon, linear aromatic polyesters such as Terylene (Registered Trade Mark) and cyanethylated-cellulose which for example may be prepared according PATENT SPECIFICATION 785486 Date of Application and filing Complete Specification: June IS, 1955. M E A No I 7283/55. Application made in Switzerland on June 16, 1954. Application made in Switzerland on March II, 1955. \\\ o'Complete Specification Published: Oct 30, 1957. Index at acceptance: Classes 2 ( 2), B 2 B 2; and 15 ( 2), 1 82 C( 1 A 6: 2 C), 1 82 K( 1 A: ID: 2 834: 3 834: 4 84), B 2 L( 2: 3: 5 A: 5 D). International Classification:-D Olf D 06 p. COMPLETE SPECIFICATION Improvements relating to Dyeing Textile Materials and Films We, SA Nmoz LTD, of Basle, Switzerland, a Body Corporate organized according to the laws of Switzerland, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: -

The present invention relates to a process for the improvement of the dyeing properties of textile materials and films of cellulose esters, synthetic aromatic polyesters, synthetic polyamides and cyanoethylated cellulose. The process consists in that the textile materials or films in question have incorporated therein basic compounds of the general formula (R'-)m A( O OR)p wherein A denotes an aromatic hydrocarbon radical which may if desired be halogenated, R' denotes a hydrogen atom, an alkyl radical, or an amino alkyl radical which amino alkyl radical may if desired be substituted, R' denotes also a hydrogen atom, an alkyl radical or an amino alkyl radical which amino alkyl radical may if desired be substituted, m and p denote the numerals 1 or 2, and in which at least one of the radicals R' and R' must be an amino alkyl group which may if desired be substituted. Compounds of the aforesaid general formula comprise for example the two following subclasses: 1) Aromatic phenolic hydroxy compounds which contain an alkyl radical united to the nucleus which nucleus may if desired be halogenated in which the amino group is attached to the aromatic nucleus through a methylene group which is in the a or p position to a nuclear hydroxyl group. These compounds can be obtained according to the Mannich reaction (see Organic Reactions, Vol I, p 303 et seq, Wiley, New York, 1942) from aromatic hydroxy compounds of the formula lPri&" 1 (R') A(-Oll), wherein R', A, m and p have the previously defined significance. 2) Organic bases of the formula wherein A' denotes an aromatic hydrocarbon radical which may if desired be alkylated or halogenated, N denotes the numbers 1 or 2, R, denotes a hydrocarbon atom, an alkyl, hydroxyalkyl, icyanalkyl, cycloalkyl or aralkyl radical, R 2 denotes an alkyl, hydroxyalkyl, cyanalkyl, cycloalkyl or arallyl radical, and wherein R, and R, can together form a ring. Bases of this kind can be obtained for example by known methods from epoxides of the formula A.(-OCI-L-CII-CH')n by reaction with amines of the formula R,-NH-R, wherein the radicals A', R, and R and the numeral N have the previously defined significance. The above-named epoxides may be prepared from the corresponding hydroxyaromatic compounds by reacting them by known methods with glycerol-epihalogenides such as epichlorhydrin in the presence of alkaline agents which are capable of splitting off halogenohydric acids. Textile materials or films which can be dyed with acetate rayon dyestuffs may be cellulose esters such as acetyl cellulose, also polyamides such as nylon and perlon, linear aromatic polyesters such as Terylene (Registered Trade Mark) and cyanethylated-cellulose which

for example may be prepared according to B P No 588,751 Theeffect achieved with the help of these bases is very fast to rinsing and washing It does not influence the dyeing properties (power of reservation) of acetate rayon towards direct dyestuffs which do not dye acetate rayon. A special method of carrying out the process is characterised in that the textile materials or films in question are incorporated with bases of the formula wherein A', n, R, and R, have the previously defined significance. Particularly suitable epoxides from which the base is made are the following: phenoxypropenoxide, ortho-, meta-, para-cresoxypropenoxides and mixtures thereof, xylenyloxypropenoxide, p-tertiary-butylphenoxy-propenoxide, halogenated phenoxy-, cresoxy-, and xylenyloxypropenoxide, naphthoxy propenoxide, bis-propenoxide ether of resorcinol, of 2,2 '-bis-p-hydroxyphenyl-propane and of bisp-hydroxyphenyl-methane. Particularly suitable amines from which the base is made are for example the following: alkylamines such as methylamine, dimethylamine, butylamine, cyclohexylamine, phenylethylamine, benzylamine, hydroxyamines such as monoethanolamine, diethanolamine, monoisopropanolamine, di isopropanolamine, butanolamines, methyl monoethanolamine, butyl monoethanolamine, cyclohexyl-monoethanolamine, cyanethylamine, cyanethyloxethylamine, dicyanethylamine, 3-aminopropanol-I, morpholine, 3-methox-propylamine, 3-isopropoxypropylamine and toluidine. The bases are oily to semi-solid at room temperature They are soluble in acids and in organic solvents They are generally insufficiently soluble in water, so that when employed in the dyeing process it is generally advantageous to dissolve them in water-soluble organic solvents such as alcohol and then to emulsify them in the dyebath containing a dispersing agent such as soap, an alklylaryl sulphonate, a fatty acid condensation product, a sulphonated fatty alcohol, a sulphated oil, or an alkyl or alkylarylpolyglycolether or to use them in the form of their water-soluble salts such as formates, acetates and hydrochlorides. The bases containing a phenolic hydroxyl group may also be used in the form of their phenolates such as the sodium phenolate Preferably the base is added to the dyebath or to the printing paste so that it is taken up by the material being treated at the same time as the dyestuff The treatment with the base can,however, be carried out either before the dyeing or printing, or after it, or the base can be added to ithe material of the textile or film before spinning or casting.

A special method of carrying out the present invention consists in that the base is mixed with a dispersing agent and then dispersed in the treatment or dyebath or in the printing 65 paste It can also be carried out in any other way such as by spraying the material with a dilute solution of the base in a volatile solvent. In all cases the base impregnates the treated material and improves the dyeing properties 70 thereof in the sense that it protects the colouring already obtained or subsequently to be obtained against the influence of gas fumes, the so-called gas fading. A further object of the present invention 75 is a process for the preparation of dyeings with acid dyestuffs which are fast to light and washing on textiles or films of cellulose derivatives, particularly acetyl celluloses which contain from 2 to 3 acetyl radicals per anhydroglu 80 cose unit and of cyanethylated celluloses which for example may be prepared according to B.P No 588,751. For carrying out the process one can add a compound as herein defined for example a 85 compound containing one or more hydroxy groups, or a mixture of such compounds, if desired, in the form of an acetone solution, to a spinning solution of a cellulose ester in acetone After thorough mixing of the spinning 90 material it can be spun in the usual manner. Another method of carrying out the process consists in treating already fashioned textiles or films with a suspension of a compound containing one or more hydroxy groups as herein 95 defined or with a mixture of such compounds in water or with a solution in an organic solvent, e g acetone The so treated or handled textiles or films are dyed with acid dyestuffs; the dyeing takes place advantageously in acid 100 baths (e g acetic acid, formic acid, or sulphuric acid) and can take place at comparatively low temperatures as for example 70W O C. A specially simple method of carrying out 105 the last-named process consists in carrying out the treatment of the textile materials or films made of cellulose derivatives with the compounds containing one or more hydroxy groups as herein defined simultaneously with their 110 dyeing in the same bath. Amongst the acid dyestuffs the simple acid azo dyestuffs are particularly suitable and also the monosulphonated acid anthraquinone dyestuffs 115 The dyeings thus obtained are characterised by surprisingly good fastness to light and washing Also dyestuffs which normally give dyeings on wool having only slight fastness to light, when used according to this in 120 vention on acetyl cellulose films give dyeings of very good fastness to light The dyeings are also in general fast to gas fumes. The following examples illustrate the invention without limiting it

The parts denote 125 785,486 prepared from the various isomeric cresols. EXAMPLE 2 Acetate rayon is dyed in a dyebath proportion of 1: 40 in the usual way in a dyebath which contains per litre 0 44 grams Artisildirektrot 3 BP (Schultz Farbstofftabellen Suppl Vol I, 1934, p 69 and Vol II, 1932, p 21), 2 5 grams of 50 % sodium oleo-methyltauridate and also 1 25 grams in dispersed form of the compound of formula. The dispersion is obtained by stirring a 30 % alcoholic solution of the basic compound into the dyebath The product is rinsed and finished in the usual manner The dyeing shows a good fastness to gas fumes If the above named compound is replaced by the (naphthyl ether of the formula then a dyeing is obtained which likewise has a good fastness to gas fumes. EXAMPLE 3 Acetate rayon is dyed in a dyebath proportion of 1: 40 in the usual way in la dyebath which contains per litre 05 % Artisildirektblau 2 RP (Schultz, Farbstofftabellen Erg Vol I, 1934, p 69), 2 grams Marseilles soap ( 72 % fat) and in addition 1 3 grams in dispersed form of the compound of formula Q /i C Hi/d/ the dispersion being obtained with the help of alcohol as in Example 2 The dyeing obtained is very fast to gas fumes, even after washing at 550 in a bath containing either soap alone or soap and soda. If the above compound is replaced by the same quantity of one of the compounds having the following formulae: P_ on parts by weight and the percentages, percentages by weight and the temperatures are given in degrees Centigrade. The preparation of the amino compounds is exemplified in Example 1 and the other amino compounds may be prepared as previously indicated in relation to the preparation described in Example 1. EXAMPLE 1 An acetate rayon satin is dyed in a dyebath proportion of 1:40 for 1-3 hours in the usual manner in a dyebath which contains in dispersed form 0 5 grams Artiisildirektviolett 2 RP (Text Ber 1930, 11, 311, Dtsche Farber-Zeitung 1930, 66, 12), 2 grams Marseilles soap having 72 % fat content and 1 5 grams of the compound of formula Ch'3 per litre In order that the last named compound may be dispersed in the bath it is previously dissolved in 3 parts warm alcohol per part compound The satin is then rinsed and dried In this way a level dyeing is obtained which even after washing at 50 with a lye containing 5 grams Marseilles soap per litre shows an, excellent stability towards nitrous gases. The amino compound of the formula shown above is prepared as follows 1 mol of cresoxypropinoxide is added dropwise to 1 mol of

monoethanolamine at 100, during 2 hours It is then heated for 4 hours at 120 The compound of the above formula is obtained in the form of a highly viscous clear slightly brownish oil which is only very sparingly soluble in water but is readily soluble in dilute formic acid or acetic acid. Similar results can be obtained if instead of the above named compound, compounds of the formula 0 O-lye Ch O-Ojf-0 -e,/, or g 3 O-Ce Coz/-CP LA Co or KID>-82 cilc J 013 C-V, OH/w are used in which the methyl groups in the phenol radical can be in, the o J m, or p position to the ether group, and mixtures can be used P- O W / \'i 0 C, GY 1 Y 3 go a Ch I 0/i 785,486 4 785,486 0/i K O i Cl V 11,11 O N -Cu OH CAW 9-O-CO-Ch O d H /w-Chf CH Cvf CQ o-rc 2 af-sewe Zcz OH/ OH 0-7, 0 ff CO-Cf/iC. XOCM 2,AS Cy 2 %-C>g P_ O Rt C 2- Cil IC-69 8 CO-/ or from the isomers of these compounds derived from m or p cresol, then dyeings fast to gas fumes are likewise obtained Similar results are obtained if the dyeing is carried out in the absence of these bases and the dyeings are ithen treated at 400 in a bath which contains these bases in dispersed form. EXAMPLE 4 An acetate rayon satin which has been desized iand previously bleached in the usual manner is dyed in a dyebath proportion of 1: 40 in the usual way in a dyebath which contains per litre 0 3 grams Arteisildirekteblau SAP (Schultz Erg Vol I, 1934, p 69), 2 grams Marseilles soap ( 70 % fat) also 2 grams in dispersed form of the compound of the formula The dyeings after washing are still fast to gas fumes. Dyeings of similar fastness to gas fumes are also obtained if instead of using the above compounds, compounds are used prepared from chlorinated phenol in a similar manner, e.g from 2,4-dichlorinated phenol or from chlorinated cresols. EXAMPLE 5 To a 10 % solution of acetyl cellulose in % acetone there is added 6 %, calculated on the acetyl cellulose, of a compound of the formula O-Cf CH 010 -CHA/i eqfy Ofl 0//3 and the solution spun in ithe usual manner for the preparation of acetate rayon The uncoloured acetate rayon thus produced does not turn yellow on exposure to light and can be dyed with acetate rayon dyestuffs so that the dyeings are fast to gas fumes. The acetate rayon is not more strongly dyed by direct colours than is ordinary acetate rayon free from the inhibitor The protective action against gas fumes remains also after washing The fastness to light of the dyeings is not influenced by the inhibitors which have been named. EXAMPLE 6

An acetate rayon satin is pretreated for 30 minutes at 800 in a bath proportion of 1:40 in a bath which contains 2 grams per litre of the compound of the formula 0/ 1 c 3-xstB and 2 grams of laurylhexylglycolether as dispersing agent for the above designated base. In order to facilitate the dispersion, the base is previously dissolved warm in 4 parts of alcohol The material is then rinsed and dried. If the acetate rayon thus treated is dyed as usual with 1 50 % Artisildirektblau 2 RP (Schultz Farbstofftabellen, Erg Vol I, 1934 p 69), then one obtains a dyeing fast ito gas fumes. EXAMPLE 7 An acetate rayon dyed in the usual way with 1.8 % Artisildirektblau SAP (Schultz Farbstofftabellen, Erg Vol I, 1934, p 69) is treated in a bath ratio of 1: 40 in a bath conitaining per litre 2 grams of the compound of the formula (dissolved in 4 grams alcohol) and 2 grams 80 Marseilles soap ( 70 % fat) as dispersion agent. s O 785,486 C ? O -, nil, c/% % VM (: > Cv$ the solution is raised to 820 within 30 minutes with constant movement of the taffeta fabric and is maintained at this temperature for)a further 15 minutes Thereupon the treated fabric is rinsed and is introduced either in the moist or dry state into a dyebath which contains a solution of 1 part of sodium 1,4-diaminoanthraquinone-2-sulphonate and 4 parts of 85 % formic acid in 3,000 parts of water. Dyeing ensues at 75-80 The dyestuff is very well exhausted onto ithe treated taffeta fabric, and gives a violet dyeing which is fast to water and very fast to light. EXAMPLE 10 parts of carefully desized acetate rayon skein are treated according to the data of Example 9 with a solution of 6 parts of a compound of the formula OH 13 The treatment is carried out by entering the material into the bath at room temperature, increasing the temperature ito 700 within 15 minutes and then stirring for 20 minutes at this temperature Thereupon it is rinsed and dried In this way a dyeing which is very fast to gas fumes is thus obtained. EXAMPLE 8 An acetate rayon satin which has been pretreated and purified in the usual way is printed with Artisildirektrot 3 BP (Schultz Farbstofftabellen, Erg Vol I, 1934, p 69) with the use of a printing material prepared by making into a dough in the usual way 40 grams of ithe dyestuff grams of a sulphonated fatty acid ester cc cold water 620 grams of 10 % Gum Arabic solution is then stirred into the paste thus obtained while warming to 40-50 and then a solution of 40 grams of the compound of formula CQ o-082111 ol Mi Mvy> M Cf Bca o CHV 3 in 40 grams of warm alcohol is added with thorough mixing and finally

there is added a solution of 30 grams Glycerine and 3 grams sodium dibutylnaphthalene sulphonate in 127 cc of water with stirring. When printing is carried out in the usual way with the paste thus prepared followed by drying and finally 20 minutes steaming and then rinsing and finishing in the usual manner, a clear bright print is obtained which when compared with a print obtained without the use of the protective substance named above shows an appreciably increased fastness to gas fumes. If the above-named protective substance is replaced by the compound of the formula or by the compounds mentioned in the previous examples, then prints fast to gas fumes are likewise obtained. Dyed or printed acetate films, foils and bands which are fast to gas fumes can be obtained with the help of the bases herein mentioned in the same way as when using acetate rayon. EXAMPLE 9 parts of an acetate rayon taffeta fabric are introduced into a cold solution of 6 parts of a compound of the composition C>-C)-Cujw I CO O H/1 OH 0 H 3 and thereupon dyed in a solution of 1 part of lithium 1-amino-4-phenylaminoanthraquinone2-sulphonate and 4 parts of 85;% formic acid in 3,000 parts of water A deep blue dyeing is obtained. EXAMPLE 11 A spinning solution of 100 parts of acetyl cellulose in 1,000 parts of acetone is treated with a solution of 6 parts of a mixture of the compounds of the formulae C> O eqic,vo J) sw 1 v/< and -e Oy Ch( q O) -C Sal in 6 parts of acetone After spinning, the acetate rayon thus obtained is dyed in a solution of 2 pants of potassium 1,4-diaminoanthraquinone-2-sulphonate and 4 parts of 85 % formic acid in 2,500 parts of water A violet dyeing very fast to light is obtained which withstands alkaline washing at temperatures above 7 C 0. EXAMPLE 12 To a spinning solution of 100 parts of jacetyl cellulose in 1,000 parts of acetone there is added a concentrated solution of 5 parts of a compound of the formula e 1 eo-0 cv 1 em C 53 j Ch 21 MI o in 3,000 parts of water The temperature of in acetone After mixing, and then spinning 100 785,486 the solution an acetate rayon is obtained which is dyed at 75-80 in a dyebath containing 2 parts of ithe sodium salt of 5-sulphoacetylamino-1,9-isothiazolanthraquinone, 4 parts of concentrated sulphuric acid and 4,000 parts of water The bright yellow dyeing obtained is fast to washing and very fast to light. EXAMPLE 13 parts of taffeta fabric of desized acetate rayon is introduced into a cold suspension of 8 parts of a compound of the composition <IF -e Q'CH(OH)-CH C/9-Ah c ek e l fdxt Ct-O 1 f in 4,000 parts of water The suspension is heated to 80 during 30 minutes and the temperature maintained at this level for a further 15 minutes The

fabric after rinsing in the cold and drying is introduced into a dyebath which contains 2 parts of Roccellin (Schultz Farbostofftabellen No 206), 4 parts of concentrated acetic acid and 3,000 parts of water The dyeing is carried out at a temperature not exceeding 80 It furnishes a red fabric which has good fastness to light and withstands alkaline washing. Ex AMPLE 14 parts of a desized acetate rayon fabric are treated according to the data of Example 9 with an aqueous solution of 8 parts of the hydrochloride of the compound of the formula o H in 4,000 parts of water The dyeing obtained with 2 parts of potassium 1,4-diaminoanthraquinone-2-sulphonate in an acid dyebath is violet and is very fast to light. The compound designated above can be worked up into the spinning solution by adding 5 parts thereof to 100 parts of acetyl cellulose in 500 parts of acetone. EXAMPLE 15 A spinning solution of 100 parts of acetyl cellulose in 800 parts of acetone are treated with a concentrated solution of 5 parts of the compound of the composition Cg 30 v-C Vo)-qv q q CV -t y C Ys in acetone After spinning, a fibre is obtained which is dyed at 80 with the dyestulff named in Example 14 A violet dyeing very fast to light is obtained. EXAMPLE 16 parts of an acetate rayon fabric are treated wvith a suspension of 8 parts of the compound of formula QO-C Mcz-cwo# Ch J-o in 4,000 parts of water for 40 minutes at not more than 80 The rinsed and dried fabric is bleached cold in Eau de Javelle which contains 2 grams of active chlorine per litre The fabric is then treated with a cold mixture of parts of 40 %,sodium bisulphite solution and 4,000 parts of water, dried and dyed according to the data of Example 9 A violet dyeing very fast to light is obtained. EXAMPLE 17 parts of taffeta fabric of acetate rayon are stirred in a bath containing 8 parts of a compound of the formula 2 parts of sodium 1-amino-4-( 4 '-methyl)phenylsulphonamide anthraquinone 2 sulphonate, 4 parts of 85 %', formic acid, 8 parts of a compound obtained from 1 mol of oleyl alcohol and 24 mol of ethylene oxide and 3,000 parts of water for 45 minutes at 75-80 A blue-red colour fast to light and washing is obtained. EXAMPLE 18 An acetate rayon dyed with 2 % 1,4-diaminoanthraquinone is treated in a bath proportion of 1 40 at a temperature of 80 for minutes with a solution of 1 gram per litre of a compound of the formula oh in the form of its hydrochloride or its sodium salt It is then rinsed and dried After the treatment, the dyeing is fast to gas fumes The effect obtained resists 30 minutes washing with 3 grams per litre of soda ash

and 5 grams per litre of Marseilles soap with a fat content of 72 %. The substance of the formula CA' produces a similar effect if the dyed acetate rayon is after treated therewith in a neutral bath. 785,486 hydroxy-4-amino-anthraquinone is treated in a bath ratio of 1: 40 for 30 minutes at 80-85 with 2 grams per litre of a compound of the formula 0 Chi 3 t 02-C EXAMPLE 19 An acetate rayon dyed with 2 % 1-hydroxy4-aminoanthraquinone is treated for 30 minutes at 75-80 in a bath ratio of 1: 40 with 2 grams per litre of a compound of the formula Ck previously dissolved in a mixture in equal parts of water and alcohol, and is then rinsed and dried The fastness to gas fumes of the treated dyeings is greatly improved. EXAMPLE 20 An acetate rayon dyed with 2 % 1-amino-4anilino-anthraquinone is treated in a bath ratio of 1: 40 for 30 minutes at 80-85 ' with 2 grams per litre of a compound of the formula 9 -K It is then rinsed and dried The treated dyeing is fast to gas fumes This effect withstands an alkaline washing with 5 grams per litre of Marseilles soap and 3 grams per litre of soda ash for 30 minutes at 600. EXAMPLE 21 A fabic piece consisting of cellulose triacetate fibres (e g of the " Amel " (Registered Trade Mark) type) is dyed in the usual way with 2 % of 1-hydroxy-4-aminoanthraquinone and then treated with 2 grams per litre of a compound of the formula at 80-100 for 30 minutes The dyeing thus treated is very fast to gas fumes. In the same manner a dyeing obtained by the above named dyestuff on polyamide fibres such as nylon or perlon can be made fast to gas fumes by treatment with the above named compound. EXAMPLE 22 A piece of acetate rayon (crepe de chine) is treated in a bath ratio of 1: 40 at 80 for minutes with 2 grams per litre of a compound of the formula o-C->/#-i{ #2 e W 2 oo Thereupon it is quickly rinsed and dried If this pretreated material is then dyed in the usual way with 2,% 1,4-diamino-2-sulphoanthraquinone in ian acid bath then a level deep violet dyeing fast to washing is obtained. EXAMPLE 23 An acetate rayon dyed with, 2 % of 1rinsed and dried The fastness to gas fumes of the dyeing is thereby very much improved. EXAMPLE 24 A fabric of the poly-terephthalic acid-glycol ester is dyed in the usual way with 1,-di 60 ammto-anthraquinone The dyeing is then treated with 2 grams per litre of a compound of the formula <iul O Ch I c V Cc G We at 80-100 for 30 minutes in a bath ratio of 1: 40 It is then quickly rinsed and dried The dyeing thus treated shows strongly

improved fastness to gas fumes. In the same way a dyeing with 1-amino-4anilino-anthraquinone ion polyterephthalic acidglycolester material is strongly improved in its fastness to gas fumes.


* GB785487 (A)

Description: GB785487 (A) ? 1957-10-30

Improvements in liquid fuel pot burners


PATENT SPECIFICATION 785,487 Date of Application and filing Complete Specification: June 17, 1955. No 17635/55. Application made in United States of America on July 20, 1954. Complete Specification Published: Oct 30, 1957. Index at Acceptance: Class 75 ( 1), TA 8. International Classification:-F 23 d. COMPLETE' SPECIFICATION Improvements in Liquid Fuel Pot Burners We, BREESE BURNERS, INC, of Santa Fe, State of New Mexico, United States of America, a Corporation organized under the laws of the State of Delaware, United States of America, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention is directed to a new and improved burner pot for liquid hydrocarbon fuels One purpose of the present invention is the

provision of a new method for manufacturing burner pots. Another object of the present invention is the provision of a simplified and less expensive burner pot structure. Another object of the present invention is the provision of a new and improved form of burner pot which is designed so as to improve the distribution of fuel vapours within the pot. Another object of the present invention is the provision of a new and improved form of burner pot which eliminates the need for a pilot ring or other pilot structure. Accordingly the invention provides a burner pot for liquid fuels which includes a generally cylindrical side wall having primary air inlet apertures spaced circumferentially thereabout and located at various distances from a generally dome-shaped bottom wall positioned within the cylindrical side wall, portions of the pot being arranged to define a narrow circumferential fuel distributing recess extending about the' pot adjacent the side wall, and which further includes means for delivering liquid fuel to said recess, the pot having an open top and being provided adjacent its upper end with air inlet means formed and adapted to admit secondary air in volumes adequate for the complete combustion of vaporised liquid fuel mixed with the air of the primary air inlet apertures. lPrice 3 s 6 d l Referring generally now to the accompanying drawings; Figure 1 is a side view illustrating one form of the improved burner pot; Figure 2 is a sectional view to a larger 50 scale of the device shown in Figure 1, Figure 3 is a plan view of the device shown in Figure 1, and Figure 4 is a side view to a larger scale of one of the elements used in the burner pot 55 shown in Figure 1. Like elements are designated by like characters throughout the specification and drawings. Referring specifically now to the drawings 60 and in the first instance to Figure 1. 1 designates the generally cylindrical side wall of a burner pot The pot is shown as provided with a plurality of apertures 2, 3, 4 and 5 spaced circumferentially about the 65 pot side wall and located at various distances from the bottom of the pot The lowest row of apertures 2 are herein shown as directed downwardly and inwardly toward the bottom of the' pot In the pot as shown in the 70 drawings the apertures 2 constitute primary air apertures and are so formed as to direct inclined air jets downwardly and inwardly at preferably uniform angles from the radial. The intermediate rows of apertures 3 are 75 indicated as radially punched holes The rows of apertures 4 and 5 constitute secondary air inlet apertures for mixing secondary air with the rich mixture of vaporised liquid fuel and of primary air delivered inwardly to the 80

pot interior by the apertures 2 and 3 In the particular' pot shown herein two rows of secondary apertures 4 and 5 are illustrated with the upper row 5 formed to direct radial inward jets perpendicular to the axis of the 85 pot,and with the lower row 4 directing impinging jets upwardly and inwardly towards the top opening of the pot It will be understood however that other means such as a single row of secondary air aper 90 tures may be employed for supplying secondary air -to the primary combustible mixture formed within the pot. As is the customary practice, an oil inlet is positioned near the lower portion of the wall of the pot so as to deliver oil to the interior of the pot. It is customary in the design and formation of burner pots of this general type to form a bottom wall 7 for the pot by a relatively deep drawn metal section The drawing process is relatively expensive According to this practice, the bottom section is generally cup shaped and the upper side portions of the section embrace the lower portion of the side walls of the burner. In the present construction, however, use is made of a bottom wall which is formed from a comparatively shallow metal stamping. This wall is received within the confines of the cylindrical side wall This bottom wall is generally dome shaped As will be seen most clearly in Figure 2, the bottom wall has a peripheral, down-turned edge portion 8 which makes a snug fit with the lower inner side wall of the pot This edge is inclined outwardly to a slight extent so that when it is positioned as shown in Figure 2, it defines with the side wall a circumferentially extending, relatively narraw recess 9 adjacent the inner side wall of the pot, the radial width of said recess being less than the effective fuel receiving depth thereof This recess is positioned slightly below the fuel inlet 6 so that oil delivered through the inlet 6 flows into the recess 9 The bottom wall may be welded to the side wall Any suitable ignition mechanism 10 diagrammatically illustrated in Figure 2 may extend through the side wall of the pot It may include a resistance heating element at the lower end portion thereof which is adjacent the recess 9 and'the fuel inlet 6. When fuel is delivered to the recess 9 it flows rapidly around the recess so that a comparatively narrow stream of oil is delivered completely around the interior of the pot at the lower portion thereof and adjacent the side wall thereof When the fuel is ignited by the ignition mechanism 10 the flame spreads evenly around this recess and causes a uniform generation and distribution in the pot. The use and operation of the present invention are as follows: Use is made of a generally dome-shaped bottom wall formed from a relatively shallow stamping in a burner pot This bottom wall is

comparatively easy to fabricate and uses less metal than previous bottom wallconstructions Its downwardly extending edge is relatively short as contrasted with the relatively long and up-standing side wall of the customary pot bottom The downwardly and outwardly inclined edge defines with the cylindrical side wall of the pot a comparatively narrow recess disposed adjacent the side wall of the pot When oil is supplied through the inlet 6 it will tend to be distributed rapidly around this recess and the 70 vapours generated are comparatively evenly distributed around the inner side wall. When the fuel is ignited by the ignition device 10 the flame tends to Spread evenly around the inner side wall 75 In a broad sense the advantage of a wick is obtained without using a wick The oil or liquid fuel which enters through the fitting 6 forms a relatively deep liquid body having a restricted upper surface In practice, when 80 the fuel is ignited, a narrow flame extends about the pot bottom closely adjacent the inner side-wall and closely adjacent the lowest row of air inlet apertures. The downwardly and inwardly directed 85 primary air apertures cause a swirling of the air supplied to the pot over the fuel in the recess. Thus, with a single comparatively simple metal stamping the cost of manufacture of 90 burner pots is reduced and, at the same time, the need for a pilot ring is eliminated and important fuel distributing and vapour generation advantages are gained in the pot. The present structure is particularly well 95 adapted for use in burner pots employed with valves other than the conventional float valves The lowest row of apertures 2 is at a level closely adjacent the level of the liquid fuel in the " wick " recess 9 There is thus 100 provided a narrow recess of fuel extending entirely around the pot and adjacent the pot side wall, with the upper surface of the annular liquid body closely adjacent the level of the lowestrowofairinlets 2 Whereas, under some 105 circumstances, it may be advantageous to tilt the apertures 2 downwardly, or to spiral them, this is not, in practice, necessary. What is essential and important is that an air supply is available at a low level in the 110 pot, adjacent the level of the fuel in the recess.


5076 5080.output

Law