US761520A - Calendering or friction-coating fabrics with rubber. - Google Patents

Description

Nb.,76l,520.. 1 L PATENTBD MAY 31, .1904; P. M. .MA'IITHBW.

GALENDRRING 0R FRIGTION COATING FABRICS WITH RUBBER. nrmouxon rmzn JULY 31. 1902. no MODEL. a sums-sum: 1.

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PATENTED MAY .31, 1904.

MATTHEW GALBNDERINGOR FRICTION COATING FABRICS WITH RUBBER.

APPLIOATiON FILED JULY 31. 1902.

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No. 761,520. PATENTED MAY 31, 1904. y P. M. MATTHEW. GALENDERING 0R FRICTION comma FABRICS WITH RUBBER.

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No. 761,520. PATEIITEII MAYYSI, 1904.

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GALENDERINGOR FRICTION COATING FABRICS WITH RUBBER. APPLICATION rum) JULY 31.1902.

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No. 761,520. 'PATENTED MAY-31, 1904;

P. M.- MATTHEW. GALENDBRING ORPRIGTION COATING FABRIGSWITH RUBBER.

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UNITED STATES Patented May 31, 1909:.

PATENT OF IC PATRICK MILLAR MATTHEW, OF EDINBURGH, SCOTLAND.

CALENDE RING OR FRICTION-COATING 'FABRICS WITH RUBBER.

SPECIFICATION forming part of Letters Patent N0. 761,520, dated May 31, 1904.

Application filed Ju1y.31, 1902. Serial No. 117,771. (llomodeL) i To all whom it may concern.-

Be it known that I, PATRICK MILLAR MAT- THEW, a subject of the King of the United Kingdomof Great Britain and Ireland, residing at Victoria Rubber Mills, Edinburgh, Scotland, have invented certain new'and useful Improvements in Calendering or Friction-Coating Fabrics with Rubber, (for which application forpatent has been made in Great Britain, No. 6,455,dated March 17, 1902,) of which the following is a specification.

In calendering-machines as ordinarily constructedand used for calendering or frictioncoating fabrics with rubber the coating or impregnation of the fabric can only be applied according to the usual method for all practical purposes to the entire width of the fabric passed through the calend ering-rolls, andconsequently the calendering and friction-coating processes have not been of service in dealing with such fabrics as are used in making up waterproof articles, uppers of rubber soled or goloshed shoes, and other goods in which an adhesive coating of rubber is only required in. isolated strips orpatches or in marginal strips, while the remainder of the surface should be left free from the rubber.

The object of my invention is to provide for applying to fabrics marginal or isolated strips or patches of rubber by means of calendering or friction-coating and by the use of the ordinary type of calendering and friction-coating machine. my invention by bringing into contact under pressure with the rubber-coated roll of the machine the parts .of the fabric to be coated, while leaving the other parts out of such close contact with the roll, either by relieving them from pressure or suitably protecting them by stencils orlike devices while the fabric is passing through the machine.

In dealing with fabrics to which isolated strips or patches are to be applied the desired result may be attained by placing on the under side of the fabric thin bars, plates, or stencils of metal, cardboard, or other material shaped to the contour of the strips or patches to be coated or impregnated with rubber, so that on passing the fabric through the rolls the portions thereof over the bars, plates, or stentween the rolls at other parts.

that difliculty, I so cut or form the stencil that every part of the plate which is cut or This. is effected according to I stencil.

. oils will be raised into close contact with the roll whichapplies the coating of rubber.

thoroughly impregnate isolated parts of the fabric with friction-coating, for which purpose great pressure of therubber-coated roll upon the part of the fabric to be impregnated is necessary, as that pressure cannot be properly applied to the exposed part of the fabric while a greater thickness of material (composed of the fabric and the stencil) is interposed be- To overcome omitted, so as to leave exposed a portion of the fabric on the upper side, has its counterpart placed on the under side of the fabric under such omitted part, so'that the thickness of the material (composed of fabric and plate) passed through the rolls is uniform throughout, and consequently the full pressure of the rolls is applied to the exposed surfaces of the In the. accompanying drawings, which serve to illustrate the invention by way of example, Figure l is a plan of a shoe-upper made of canvas and to which a marginal friction coating of rubber is shown as applied. Fig. 2 is a plan of a stencil of sheet metal which is used to protect the fabric, with the exception of the margin or edge width, in producing the shoe-upper, the said upper being shown fitted in the cut stencil by shade-lines. Fig. 3 is a cross-section at the line 2 2, Fig. 2, showing the upper held between the cut portions of the Fig. 4 is an inverted plan of the stencil, showing the back of part of the upper by cross-hatched lines. Figs. 5 and 6 are plan and inverted plan,respectively,showing a stencil in part covering an upper for a tennis-shoe; and Fig. 7 shows the upper removed from the stencil, the cross-hatching representing the part of the fabric covered by the stencil during the friction-coating process and the parallel shade-lines representing the rubber-coated parts of the upper. Fig. 8 is a plan showing a stencil-plate cut to hold the fabric forming part of the upper for a snowshoe, of which only a marginal part is friction-coated.

As shown by the drawings, the stencil a, cut or formed as above described, differs from the ordinary stencil in having the portion a, which is cut out of the stencil-plate to allow of the fabric 6 being coated, applied at the back or opposite side of the fabric.

In the example shown at Fig. 8 a slit (0* only is cut in the metallic stencil-plate a to permit of a part of the fabric 6, forming the upper, being passed through the slit and exposed to the action of the rubber-coated roll.

In the example shown at Figs. 2, 3, and 4 a single sheet-metal plate a has a tongue a cut in it, and the fabric 6 is placed between the main part of the stencil a and the tongue (0; but in many cases such a stencil cannot be formed from a single plate, and in such cases two plates may be usedas, for example, in making the upper shown at Fig. 7of which one plate, a, will have cut out of it parts corresponding to the portions of the fabric to be coated with rubber, as indicated at Z), and the other plate, a, will be an obverse plate or have the parts corresponding to those portions of the fabric left, so that they raise the fabric into close contact with the rubbercoated roll, or other devices of a similar kind may be used to attain the desired end.

In general it will be advantageous in order to produce in quantity the goods to which isolated strips or patches or marginal coatings of rubber are applied that a continuous sheet or web of fabric be passed through the rolls, and in dealing with such production it will be preferable to adopt the method above described, in which the fabric is raised into close contact with the rubber-coated roller at the points where the fabric is to be impregnated. For that purpose I interpose betwixt the bottom roll R of the calender and the fabric carried through it a continuous endless band of flexible material of suitable thickness, from which are cut out such portions as correspond with the parts of the overlying fabric which it is desired to leave free from the rubber coating. As an alternative I may attain the same result by attaching the obverse parts of the stencils to the bottom roll only, suitably forming the bottom roll R of the calender so as to produce in relief on the roll patterns corresponding in outline with those parts of the fabric to which it is desired to apply the rubber coating by close contact with the rubber-coated roll. For example, if strips of friction-coating are to be applied to a fabric the bottom roll may be grooved, so as to leave projecting circumferential ridges on it which would raise the fabric into close contact with the rubber-coated roll of the machine, whereby separate strips of the fabric would be subjected to pressure and the coating applied thereto, while the intervening strips would be left uncoated.

A marginal friction-coating may obviously be applied first on' one side and then on the other side of the fabric.

Having now described my invention, what I claim, and desire to secure by Letters Patent, is-

1. The herein-described method of applying to a fabric a partial coating, which consists in bringing the parts of the fabric to be coated with pressure against means for distributing the coating thereover, and holding the portions of the fabric that immediately border on the portions to be coated and which are not to be coated, in a different plane from the portion to be coated and out of contact with said distributing means.

2. The herein-described method of applying to a fabric a partial coating, which consists in bringing the parts of the fabric to be coated, with pressure against means for distributing the coating thereover, and covering and holding the portions of the fabric that immediately border on the portion to be coated and which are not to be coated, in a dill'erent plane from the portion to be coated and out of contact with said distributing means.

In witness whereof I have hereunto set my hand in presence of two witnesses.

PATRICK lllllllullt lllAT'lllllW.

' Witnesses:

VVALLAoE ORANsToN FAImvnA'rn'nR, J NO. ARMSTRONG, J unr.

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