USRE157E - Improvement in felting india-rubber with cotton fiber - Google Patents

Description

U ITED STATES PATENT OFFICE;

CHAhLES GOODYEAR, OF'NEW HAVEN, CONNECTICUT.

IMPROVEMENT IN FELTING INDIA-RUBBER WITH COTTON FIBER.

Speciiicniiou forming part-oi Letters Patent No. 3,633, dated June 15, 184-1; Reissue No. 131, dated December 25, 1849.

' 1'0 all whom it may concern.- prepared sheetof indie-rubber or caoutchouc 1 Beit known that I, CiunLas GOODYEAR, of of the required thickness and in the green the city and county of New Haven, State of state asitis termed-that is, before the indie.- Oonnecticut, have invented a certain new and rubber has been subjected to the curing prof useful iabi-ic,which Idenominate' India-Rubcess, and then pressingthe fibers of the fleece Bellum, and I hereby declare that the into the gum by subjecting the whole to the owing is a full, clear, and exact descrip-. requisite pressure while the sheet of gum is of the principle or character which distin-' in a soft state. giishes it from all-other things before known, vThe mode of procedure which I have pracfl of the method of making, compounding, ticed with success is to take a sheet of indiapd using the same. rubber prepared after the manner secured to 'It has long been essayed to combine the me by Letters Patent bearing date the 15th rs of cotton or other fibrous substance or day of June, 1844, and of about the thickness I nces with sheets of india-rubber or the of the intended fabric, audxwhile itisin what is compounds thereof, with a view to make a'thin called the green state. This is rolled onto fibric possessing lightness, strength, and d'ua beam, with a sheet of cotton or other cloth a ility; but until my present invention these interpoud, to prevent'the surfaces-of the rubattempts have not been attended with any her from adhering. The beam thus prepared marked success. The methodsheretofor'epraeis placed on appropriate bearings near the tieed or essayed were, first, to grind or mix usual ealendering-rollers. A thin fleece or ther the fibers of cotton or other substance bat of cotton another fibrous substances is in and the india-r'ubber, and then forming it into 'like 'manner rolled upon abeam, and also fleets by passing the mass between calender- .mounted near the calendaring-rollers. One qpllcrs, in the manner of making sheet indiaend of the sheet of indiarrubber, without the bber; secondly,aiter makingasheet ofindiacloth, and one end'of the fleece or hat of fibers, ubber or its compounds, coating the surface are puttogether in the bite 'of the calenderwith flakes of fibrous substance or substances, ing-rollers, and thus oneon the other rolled again rolling,'theu another coating of flakes, through, the rollers being so adjusted asto and so on until the required thickness was obpress and force the fibers of the bat or. fleece taincd; and, thirdly, to cement a coating of into the sheet of indiao'ubber, or so 'much of India-rubber into cotton or other bats. The them as the india-rubberwill receive, and the first and second of these methods are defective, surplus, if any, is then to be stripped or rubbed for the reason that in the operation of grindofi. Instead of this, the sheet ofindia-rubber or mixing and drawing between the calcan be formed at the same operation by hav- ,-endcringrollcrs to obtain the thickness of ing aseries of calendering-rOllers-say foursheetrequired,thefibers are necessarily broken one abovetheother. The mass of iudia-rubp, and thus lose their strengtln-so that the her taken from the grinding=machine is apiabric thus produced actually possesses no plied between the top and. second rollers and more, if asmuch, strength as if made of indiaformed into'a sheet, which from this passes rubber alone or any of its compounds; and between the second audthird rollers, where it third gives too much thickness and but is-reduced tothe requiredthickness. Thence little strength, for the hat of fibers in itselfposit passes to the bite of the third and fourth -.sesses comparatively but little strength, and rollers, where the bat or fleece of cotton or when cemented to the sheet of india-rubber other fibrous substance is introduced with it, ",iiithe two are only connected along their conto be incorporated as above described. In fftiguous. surfaces, and the indiarubber will eitherpf these ways thefibers are thoroughly therefore be strengthened only bythe fibers incorporated with the indie-rubber, and, betin actual contact with it. ing carried through between the rollers but My invention consists in combining the once, or if more than once without materially bers of cotton or other substance with asheet stretching the sheet, the fibers retain their .nf caoutchouc or india-rubber prepared in any tenacity, and, being cemented or agglutinated g esired manner b'ylayingabat orpieceofcotton by the gum or india-rubber, produce a fabric other fibrous substance on 'a previouslyof great strength and but little or no elasticity, and with a surface entirely. difl'erent from any other fabric heretofore known. The degree of thinness within which such a fabric can be produced is only limited by the thickness of the fibers, for the sheet of india-rub ber may be so thin as to receive only one or two ranges of fibers not attached'to the surface of the india-rubber, but embedded in it. A fabric, however, sot-hin as this would be of butlittle practical utility, and would require a nicety of mechanical adjustment in the calendering-rollers not well adapted to practical purposes, and this is merely stated to give a clear notion of the character of the fabricproduced by my invention. Afier the fabric has been thus prepared it may be subjected to any of the cooling processes.

It will be obvious from the foregoing that small sheets of this fabric can be made in any kind of platen-press by the application of direct pressure to incorporate the fibers of the fleece or bat with the sheet of india-rubber,

and that, instead of preparing the fleece or hat of fibrous substance separatel y, it may be formed directly on the sheet of india-rubher, for such variations will not in any manner vary the principle or character of my invention, which, as previously stated, consists in forcing the fibers of the fleece or bat into the prepared sheet of india-ru ber without subjectingthem to a stretching operation after they have been incorpoi ted, and thus retaining their full strength n addit-ou to thestrength due to the india-rubber, and therefore it will be obvious that this can be effected by any mechanical means which will not materially injure the fibers.

\Vhat I claim as new and of my invention Incorporating the fibers of ,eotton or other substance with india-rubber by pressing the fibers of a fleece or bat of cotton or other fibrous substance into a sheet of india-rubber in the green state without subjecting the fibers, after they have been incorporated, to a stretching or drawing operation ,"substantially as herein described.

CHAR-LES GOODYEAR.

Witnesses:

BENJN. S. MULLITT, ALFRED Ros.