US962230A - Pneumatic tire. - Google Patents

Description

W. A. LURIE.

PNEUMATIC TIRE.

APPLICATION FILED JUNE 14, 1909.

Patented June 21,1910.

-Be it known th vas strip 2 which engages the Stitching may concern 1 111,,WILLIAM A. Loam, a

citizen of the United States,..and residing at Chicago,

nol s have invented new and useful Improvecounty of Cook, and Statev of Illiments in Pneumatic Tires, lowing is a specification,

My invention relates to automobile tires and has for its object a construction .which will render such tires more tough and more puncture proof without detracting from their traction efliciency or from their pneumatic cushioning properties.

IIl'BCCOIClZLIlCG with my invention I interpose between the outer casing of the tire and the inner inflatable .tube, a pad or sheath built up of tough fibrous materials such as canvas and felt which when compressed upon inflation of the inner tube will effectively resist and prevent puncturing objects from reaching the inner tube.

In the accompanying drawings .which illustrate my invention Figure 1 is a plan view of part of the puncture resisting pad; andFig. 2 shows in section a tire in which the pad has been applied.

The body of the pad is in the form of a strip of fibrous material such as felt. The strip, before application of the pad to the tire, is of rectangular cross section and of a length depending upon the circumference of the tire. This strip is wrapped by a canbase and side edges'of the strip and whose ends 3 and 4 engage the top of the strip and may overlap as shown. The corners between the base and sides of the canvas wrapper are looped to form pockets 5 and 6 for receiving cords or ropes 7 and 8, which are confined in these pockets by stitching 9 and 10. An outer wrapping 11 of canvas-surrounds the-inner wrapper and has its corners prolonged lat erally to form extensions 12 and 13 terminating in pockets 14; and 15 for receiving cords or ropes 1t} and 17 held in place by stitching 18 and 195 The ends 20 and 21 of the outer wrapper join at the top of the pad as shown. Any number of lon itudinal stitch lines 22 are run through both wrappers and the felt strip to hold the parts in relative position. Stitches 23 and 94 are applied through the looped extensions 12 and 13 adjacent to the pockets 5 and 6 of the inner wrapper. The 9 and 10 may also extend through the outer wrapper. i

In Fig. 2, the pad of which the ':fol-

is shown i-Ipits final porivEuMn'rm Tran,

u Specification ofLetterslateiit. Patented June 2 1 Application filed June 14, 1909. Serial No. 501,913. "F

sition Within a tire. The p'ad, after-being built up, can be applied-in various manners to the tire casin anally into circu ar form before application,

or can be caused to assume this 'shapeduring application to the casing. In F igf2, 25 represents the outer elliptic cross-section, innerinflatable tube which is'of morefcircular cross section,so that a crescent shaped annular chamber 27 is provided between the casing and tube. Into this crescent shaped chamber the pad will be compressed, the strip 1 assuming a crescent shaped section as shown, while the extensions 12 and 13 engage snugly between the casing and tube at the inner sections thereof. The casing may be provided with annular grooves 28, 29 and 30, 31 for receiving respectively the ropes 7, 8 and 16, 17 Upon inflation of the inner tube 'the pad is compressed snugly in the chamber 27, and the sections containing the ropes are compressed into and securely held in the grooves 28, 29 and 30, 31 so that relative displacement of the parts is prevented and the thick, tough part of the pad retained in position adjacent the tread section of the casing. The extensions 12 and 13, besides serving to anchor the pad in place, also offer protection to the inner tube along its inner section.

The end of strip 1 and of the canvas wrappers 2 and 11 areofverlapped and sewn to gether to form a close joint, and either before or after the pad is placed into the easin the ends of each rope are drawn toge her until the circumference of the ropes equals that of the respective grooves provided in the casing, and the rope ends are then tied or otherwise fastened together. This drawing together of the ropes gives the pad approximately the elliptical form to lit the tire casing. v

The two canvas wrappers together with the felt strip 1 after being compressed in the tire offer a tough barrier which will resist the passage of sharp objects and will prevent their reaching the inner tube. Nails, wire and the like will be bent and deflected from a straight course by the pad and will lodge flat on or in the pad. Glass and stones are deflected and thrown out, or brought flat between the outer casing and pad. The pad will also prevent blowing out of the inner tube upon tearing or cutting of the outer casing. The pad will also keep It can be bent longit'ucli- "theinner tube cool, and in case of injury to e casing, will revent seepage of water to the inner tube. i

the pad is anchored by the rope. sections, will 5 prevent any displacement during running of the tire. I I do not desire to be limited to the-exact formation and structure as shown as modifications are possible which would still come 10 within the scope of my invention.

I Having thus described my invention, what claim as new and desire covered by Letters Patent ise In a pneumatic tire, an outer casing and 15 an inner inflatable tube forming between them a chamber adjacent the tread section of the casing, a, pad comprising a strip of felt disposed 1n said chamber, an inner canvas he secure manner in which oeaaao wrapping for eaid'strip edges looped to form mg through said ets an outer canvas wrapping forsai strip having its lateral edges loo d to form pockets, and cords extending t ough said last mentioned pockets, said outer casm having grooves in its inner 2 surface intowhich 'said' cords are compressed upon inflation of the inner tube to anchor the pad against displacement.-

In witness whereof, I have slgned my name to this pecification in the presence of 0 two subscribing witnesses. 2

WILLIAM A, LUBIE. Witnesses:

' WnLLns S. BAER,

H. BunLmeAME.

was new kets, cords extend- 2o

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