US2101987A - Process of treating textile fabric for reinforcing insoles - Google Patents

Description

E. A. ELLIS 2,101,987

PROCESS OF TREATING TEXTILE FABRIC FOR REINFORCING INSOLES Dec. 14, 1937.

Filed Aug. 16, 1934 5 Sheets-Sheet l Dec. 14, 1937.

E. A. ELLIS PROCESS OF TREATING TFXTILE FABRIC FOR REiNFORC-ING INSOLES 5 Sheets-Sheet 2 Filed Aug. l6, 1934 G INSOLES E. A. ELLIS Dec. 14, 1937.

PROCESS OF TREATING TEXTILE FABRIC FOR REINFORCIN Filed Aug. 16, 1934 5 Sheets-Sheet 3 awwwn Patented Dec. 14, 1937 PATENT OFFICE PROCESS OF TREATING TEXTILE FABRIC FOB REINFORCING INSOLES Elmer A. Ellis, Medford, M888. Application August 16, 1934, Serial No. 740,090

1 'Claim.

, My present'invention is a novel and improved method of treatingor coating duck, canvas, or

the like textile material to be applied as a reinforcing to insoles, particularly welt insoles for 3. use in the manufacture of boots and shoes.

This reinforcing process, well known as gemming, has long been employed in boot and shoe manufacture. Heret-ofore two processes have been utilized: The .fhot process, wherein the 10 coating applied to the reinforcing duck'and the cement coating appliedthereto for attachment to the insole has been put through a steaming or heating process where a relatively high degree of heat is necessary to render the coating "tacky and enable the reinforcing duckto be applied to and adhere closely to the insole, particularly to the sewing rib and the underseam groove, usually at the base of the rib.

The other method has been the cold process A constant disadvantage with such material Y 3 has been the necessity of shipping the same in rolls to a shoe factory after the duck had been coated and to either keep the adhesive in condition for use or to specially treat the coating so that it could be applied to the insoles.

) By my present invention I have devised a compact, eflicient apparatus and a process whereby the duck to be used for reinforcing or gemming insoles can be coated and slightly heated directly on the job and applied to the insoles to be reinforced.

Preferably also I provide my apparatus with means for treating two strips of duck simultaneously, thus doubling the normal capacity.

Furthermore, an additional novelty in the presl ent invention consists in the arrangement whereby I am enabled to apply two coatings to the duck on its passage through my apparatus, thus utilizing plain unsized canvas and treating and coating it with suitable adhesive which, for this purpose,

i is maintained in a perceptibly'heated state, viz: substantially above any cold process or room temperature methods, such as shown in my prior Patent No. 1,830,534, datedNovember- 3, 1931, but which temperature is not of any relatively high degree. High temperatures involve danger of fire, explosion, etc., and by my present invention I am enabled to obtain all the advantages incident to a heated gemming process, which greatly facilitates the set of the canvas, particularly at the base of the sewing rim, where it is most level of the water within the base I.

important, without the fire risk and danger heretofore incident to a heated process.

This method of double coating enables me to utilize extremely inexpensive duck while treating and coating it on the job, giving a sizing if 5 necessary and then an adhesive coating or applying two thin adhesive coatings Just prior to the gemming operation.

Other advantages, important features, and combinations will be hereinafter more fully pointed out and claimed. 1 1

Referring to the drawings illustrating preferred embodiments of my invention,

Fig. 1 is a plan view with a portion of the cover or top broken away illustrating my improved l5 apparatus; 4

Fig. 2 is a side view;

Fig. 3 is a cross-sectional view on the line 3-3 of Fig. 2,

Fig. 4 is a fragmentary detail on the line treating machine, wherein duplicate applying and treating devices are arranged in combination.

As shown in the drawings, l designates the frame or base of my machine adapted to be fitted on a bench or any suitable support adjacent the insole gemming station in a shoe factory. Preferably, this base is of sufficient depth to contain water, which is heated by an electrical heating unit 2 receiving current from any suitable source bf supply. The base I has a lateral-extension 3, with a cored recess designated at 4 opening intoan upstanding holder 5 which is 5 fitted to receive an inverted latex bottle and, by vacuum feed, permit a continuous supply of latex and at a predetermined level at the base of the receptacle i0.

I prefer to form the base I of suflicient depth to constitute both a water-receiving receptacle and to support and hold a cementand rollreceiving boxlike structure l0, which will have the lower portion immersed below the normal This memher I. is provided with extending lugs 6-6 and 1-! arranged in pairs to overlap the side edges of the walls of the base I (see Fig. 3), which lugs also constitute means for attaching and locking the upper part or heated cover of my apparatus.

Within the member II I mount a set of supports or bridges l2-|2 connected by a central cross-bar II to hold the same in suitable spacing and with grooves formed therein to receive the axles ll of feed rolls 20 and 2|. In this member V I0 is put a quantity of resinous emulsion, vulcanized latex, which is fed to the canvas as it passes over the feed rolls, as will be explained. Fitted also within the member I0 is a stripper plate to remove surplus coating material from the canvas'before it passes out from within the area of the box i0. Removably secured to the box in is a top or cover 30, having thin heat transmitting plates 3| and 32, and a heating coil 33 contained therein receiving heat from any suitable source of supply. On the lower portion 32 is aflixed a pressure member 35, of semi-cylindrical contour, midway between and depending below the topportion of the rolls 2|! and 2i. I also afiix to the cover 32 a spring-pressure member 36 to cooperate with the stripper member 25 to press against the opposite and uncoated surface of the canvas as the same is fed through the apparatus.

To hold the cover in position I form the same with a pair of outwardly extending lugs 40-40 at the front of the machine, to which are pivoted threaded locking clamps 4l'4l, having a pair of thumb nuts 42 and 43 adapted to engage the lugs 5 on the box l0, said lugs being slotted for this purpose as shown at 44. Manipulation of the thumb nuts 42 and 43 thus not only serve to lock the top member 35 to the box 2 but also aiford capacity for, adjustment of the same and hence of the bearing members 35 and 35. Attached to the cover 30 opposite the lugs 45 are a pair of depending arms 45 having trunnions 41, 41 resting in recesses in the lugs l1, H, as clearly shown in Figs. 2 and 3.

Preferably I form the cover 35 with a straight fiat portion where it extends from the width of the box i0 and within the bevelled-or inclined portion to the left (viewed in Figs. 3 and 5) to facilitate the travel of the canvas 54. At the front of the machine (viewed in the right of Figs. 3 and 5) I apply to the cover portion 34. a guide roll 53 mounted on axles 54 in hearings in the covemasshown.

0n the base I at the left of the machine, viewed in Figs. 3fand 5, afeed roll is fitted in brackets 51 on the base I and a cooperating feed roll 551s fitted on the brackets 1 attached to the box III. The cover 35 may be released by loosening the locking nuts 42 and 43, whereupon the levers 4| are swung out of the grooves 44 and the entire -co.ver lifted upwardly. 'I'hereupon the canvas 55 is led through the machine in the direction of the arrow, Fig. 3, over the guide rolls 55 and 55 across the tops of the feed rolls 25 and 2i and, thereupon, the cover 30 is lowered and the canvas 55 led from the guide roll 53 and across the plate ll of the cover extending downwardly in the direction of the arrow to convenient reach of the workman.

This operation also acts to force the pressure. member .35 and spring pressure member 55 in contact with the canvas 20, the former depressing the strip below the level and in intimate contact with the tops of the feed rolls 25 and 12l, while the spring 35 holds the canvas in intimate contact with the top of the stripper plate 25. Pref-. erably the first feed roll 20 will be provided with a series of transverse grooves or corrugations to facilitate carrying up the heated selution to apply to the contacting surface of "the canvas belt 55 while the second feed roll 2! will largely produce a smooth and spreading action, which is completed by the stripper 25 which also removes sur- I pl'us material to fall back. into the bottom of the box it. I 'I'hebelt lfiisthenledov'ertherolluandreversely across the heated plate 3i incontact with the same, thus eifecting a substantially instantaneous setting of the material, latex, or the like, fed to the opposite surface of the belt 50 in its passage over the feed rolls 20 and 2i.

With the apparatus as thus far described, it will be appreciatedthat the heating unit .2' will bring the water in the base i to any desired temperature. I find that for such an immersion heater, a unit of thirty watts capacity is sumcient. Under the heating unit .33 a capacity of forty watts is sufilcient. Ahigh heat service can be given to the heater 33 if it is desired to feed through the belt 50 at greater speed than is customary in order to effect the setting of the solution on the belt 50 in a shorter time.

As thus far described, it will be appreciated that the canvas strip or belt, preferably of unsized' and uncoated material, is fed through the apparatus and the heated emulsion is applied thereto by the feed rolls 2!! and 2|. ,1 find that a temperature of approximately 100 F. is ample for this purpose in view of the subsequent heating and setting. The belt 50 is fed through either continually or intermittently by hand, as the operator may pull off a strip from the delivery end of the cover 35, coat same, and apply it to the insole.

' This operation will give sufiiclent time for the setting of a corresponding section of the belt which has now been pulled into position over the heated plate 3!. .The operation is repeated and continued.

Preferably I arrange the apparatus of sufllcient' width to take two belts, as shown in Fig. 2, so

thatone operator can work on each side, if desired, and'pairs of shoes can be gemmed simultaneously.

In Fig. 4 I have illustrated a s1ight.modification in which the heated plate is here shown with a pair of guiding rims 5| on each edge, thus facilitating the travel of the belt 54 over the heatingplate as well as guiding. and giving frictional grip on same.

In Fig. 5 I have illustrated a double unit wherein successive coatings are applied to the samesurface, of the belt 50. For this purpose I du-' pllcate the construction of the feeding andheating devices, as above explained, but showing the first heating member 55in a cover 56 which is horizontal in position and is provided with a guide roll 52 mounted in a pair of upstanding lugs-41 on one edge of the machine, to the left viewed in Fig. '5, around which the canvas belt or strip 55 is led upwardly to the first guide roll 55 on the second coating machine.

By this arrangement, also, I may prefer to mount the top member I directly vupon but spaced from'the lower member by means of a set of four'posts 15. passing through appropriate holes or recesses in the base fianges ll of the upper tank Linto sockets in the flanges I2 of the lower part in the bottom member with spacing tubes rum which the upper unit may rest. aetion'of each unit is identicaland the heating member 55 maybe of sufilcient power, such as eighty watts, to effect a more thorough drying of the, st coat before the same surface of the belt .55 is treated to a second coat. Furthermore, this first coat may be a "priming or sizing of an desired material or consistency, while the second coating is preferably of a latex emulsion and is mainly for adhesive purposes to attach he reinforcing canvas onto the insole.

I believe that my method of thus"maklng and ii coating a strip, or plurality of strips, of canvas for insole reinforcing, by applying latex or other material directly to one surface, instantaneously setting it, and all at a relatively slight degree of heat, viz: 110 F. or somewhat greater, is a distinct novelty and improvement in this art. I also believe that the application of a plurality of coatings in the manner described is new and, therefore, I wish to claim the same herein broad- 1y.

Furthermore, my compact, simple, economical apparatus is neat, clean, and operates at a degree of heat which eliminates risk and danger of fire, explosion, or the like, as well as absolutely preventing any damage to the leather on which the reinforcing layer is applied, and I believe the same is new and useful and, hence, wish to claim the same.

I claim: I

That improvement in the method of reinforcing insoles by applying fabric thereto, which consists in conducting a continuous strip of uncoated and unsized fabric thru successive treating and drying operations as an immediate step in applying the reinforcing to insoles, said treating and drying being in immediate sequence as a substantially simultaneous action at relatively high speed, said treating consisting of applying a liquid sizing and adhesive to one surface only of the fabric strip, and thereupon reversing the line of travel of the now-treated strip, and conducting the same with the untreated surface in contact with-a heated plate, whereby the fabric is treated, partially dried, and rendered tacky for immediate use in reinforcing insoles.

' ELMER A. ELLIS.

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