US1407012A - Reenforcing fabric for vehicle tires - Google Patents

Description

I. BRANsoI\I. REENFORCING FABRIC FOR VEHICLE TIRES.

I APPLICATION FILED I Ec.24,'1920.` 1,407,012,y

Patented Feb. 21, 1922.

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UNITED STATES PATENT OFFICE.

THOMAS BRANSON, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO SIBSON & STERN, INC., .A CORPORATION OF PENNSYLVANIA..

REENFORCING FABRIC FOR VEHICLE TIRES.

Specication of Letters ratent.

Patented Feb. 21, 1922.

To' all fwlwm it may con/cem.'

Be it known that I, THOMAS BRANsoN, a citizen of the United States, residing in Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented rubber, are so arranged in the tire structurey strains induced as to be capableof resisting d. 1 h

ccor ing y, t e

only in one direction.

i paramount requisite of a fabric best suited to i simply inlaying this purpose, 1s that it possess great tensile strength. Hence, the main strands or warps of such fabrics are usually in the form of stout cords, which, as can be readily inferred, are arranged to extend longitudinally of the fabric structure. y

The object of my invention is to dispose the main strands or .cords of the reenforcing fabric in such manner that they will be free, not only to admit of being closely compacted laterally, but also to be stretched absolutely taut when placed under tension without incurring any interference whatever from the binder threads of the ground work by which they are incorporated into the fabric structure.I This end I attain by the cords in a ground work of comparative ine gauge, binder threads having just su cient strength -to preserve the integrity of the fabric, so that the latter will not yield to undue distortion in the course of being coated with, or embedded in the rubber as above noted.

Other ob'ects and advantages of my invention will become a parentfrom the detailed descri tion whicli follows.

The drawing re resents, more or less diagrammatcally, a raofment of a fabric structure conveniently emcbodying my invention.

From this illustration, it will be observed that the main strands or cords indica-ted by the numerals 1 to 9 inclusive, extend lon tudinally of a fabric structure and are 1nlaid in a ground work of interconnected binder threads of a comparatively lighter or liner gau e, said binder threads being represented y characters 10 to 13 inclusive. These binder threads are interknitto form a series of loop chains 15 to 19 inclusive, which chains are coextensive with the longitudinally running cords and appear upon, what I will designate for convenience, the face of the fabric.

The loop chains are tied together by a peculiar preorderin of the intertwining of the binder threads 1n the course of knitting operation, the result of which may be briefly described as follows:

Tracing, for example, the course of the binder thread 10, it will be noted that the latter is formed into a loop 20 (only partly shown) in the first chain 15 of the series, this loop being held by a superjacent loop 21 in the same chain. After passin through the loop 21, the thread 10 extens, in an angular direction, to the back of the fabric structure, incidentally embracin from behind, -the cords 3, 4, l5, and 6, an thereafter again makes its ap earance, at the front of the fabric, in thel orm of a loop 22 in the comparatively remote chain 18. This loo it will be noted, extends askew of the cor s 7 and 8 in order to bind them, and is held by the superjacent loop 23 of chain 18, the

last mentloned loop belng likewise disposed askew of the cords 7 and 8, but slanted in a direction opposite to that of loop. 22. After passing through the loo again recedes to the back of the fabric and embraces the cords, 3, 4, 5 and 6 a second time, and in so doing extends at an-inclina tioncounter to that of its .first deviation, nally reappearing as another loop 24 in the vchain 15. The latter loop is connected to the. loop 20 by the loop 21, previousl referred to, while said loop 24 is held y a supexr'liacent companion loop 26 of the chain 15. racing the course of the thread 10 still further, it will be observed to repeat its deviation to the right behind the cords, 2,

3, 4 and 5, and forms'asecond loop 27 in the chain 18 which loop kis in turn tied to the loop 22 by the intervenin loop 23 of another binder thread. From t is point on, the thread 10 returns again, after a manner alread understood, to form another loop (not si own) in the -chain 15. By virtue of such continual zigzag ing of the binder thread in order to be ormed into alternate 23, the thread 10 p loops of remotely spaced chains, the cords 3, 4, 5 and 6 are effectively tied into the fabric structure. By similar reasoning, it will become manifest that the binder thread 11, in'zigzagging between chains 16 and 19, serves to incorporate the vcords 5, 6, 7 and 8 in a like manner. Furthermore, it is to be particularly noted that the fields ofthe zigzagging of the several binder threads overlap so that one group of cords, embraced at the rear of the fabric, is bound unto the next, while the loops of the chains skewed alternately in different directions serve to tie together adjacent pairs of the cords at the front of the fabric.

A fabric structure having the characteristi cs herein set forth, while being sufliciently flexible laterally to permit the flow of the rubber in the interstices between the longitudinal running cords during manufacture into a composite tire material, will not yield to undue distortion in being passed between the pressure rolls of the machine in which this operation is performed. In practice, I employ binder threads of very light gauge having the roper tensile strength to preserve integrlty of the fabric in the course of the process above referred to, but which notwithstanding occupy but a comparatively small space intermediate the cords. As a consequence, the cords may assume positions in very close proximity to one another when the fabric is placed under tension longitudinally, and by reason of being only inlaid in the structure, the cords are rendered free to become taut under tension without interference from the ground work by which they are tied.

The fabric structure of my invention may, as Will be readily understood by those skilled in the art of knitting, be readily produced on any ordinary knitting loom by predetermining the shiftin of the guides both for the cords and bin er threads with respect to the knitting needles.

Having thus described my invention, I claim:

1. A textile structure of the character described includin in combination, a series of cords exten ing longitudinall of the fabric, and a ground work in w ich said cords are inlaid, said ground workcomprising a series of comparativel light binder threads interknit to form, in a ternation with the cords, a series of coextensive loop chains appearing on the face of the fabric structure, the binder threads, in order to form loops in remote loop chains, being zigzagged crosswise at the back of the fabric to embrace the group of cords 'in the interval, and the fields comprehended by the zigzagging of the several binder threads, arranged to overlap, so

nthat one group of the cords is bound unto the next.

2. A textile structure of the character described including in combination, a series of cords extending longitudinally of the fabric, and a ground Work in which said cords are inlaid, said ground work comprising a series of comparatively light binder threads interknit to form a series of longitudinally running loop chains, the loops of said chains lying askew in alternatively opposite directions across a number of said cords at the face of the fabric, and the binder threads, in order to form alternate loops in remote loop chains being zigzagged crosswise at the back of the fabric to embrace the group of cords in the interval, and the fields comprehended by the zagzagging of the several binder threads, arranged to overlap so that one group of cords is bound unto the next.

In testimony whereof, I have hereunto signed m name at Philadelphia, Pennsylvania, th1s 16th da of December, 1920.

T OMAS BRANSON.

Witnesses JAMES H. BELL, E. L. FULLnm'oN.

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