US1419442A - Inner tube - Google Patents

Description

F. E. BESSLER.

INNER TUBE. APPLICATION F|LED AUG. I5. 192!- RENEWED MAY 8,1922- LM 4 Patentedlune 11s, 1922.

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FRANK E. BESSLER, OE AKRON, OHIO.

INNER TUBE.

Specification of Letters Fatent.

Application filed August 15, 1921, Serial No. 492,316. Renewed May 8, 1922. Serial No. 559,422.

T 0 all whom it may concern:

Be it known that I, FRANK E. Bnssnnn, a citizen of the United States, residing at Akron, in the county of Summit and State of Ohio, have invented a'new and useful Inner Tube, of which the following is a specification.

The device forming the subject matter of this application is a tire of that general type in which an inflatable tube is replaced by a resilient frame, capable of transverse expansion, and the present invention aims to provide novel means for securing an expansion of the frame and to provide novel means whereby the frame may be held against contraction, after the frame has been expanded.

Within the scope of what is claimed, a mechanic may work changes without departing from the spirit of the invention.

In the accompanying drawings :-Figure 1 shows in transverse section, a device constructed in accordance with the invention; "Figure 2 is a transverse section taken through one of the screws, Figure 3 is an elevation showing the means whereby the sections of the rings are joined; Figure e is a sectional detail showing the mounting of the screw depicted in Figure 3, Figure 5 is a diagrammatic view illustrating the ring; Figure 6 is an elevation showing the gauge; Figure 7 is a plan of the gauge; Figure 8 is a plan showing a wrench which may be used in connection with the device; and Figure 9 is a side elevation of the wrench.

In the drawings there appears .a wheel body comprising a felly 1 carrying a rim 2 provided with a fixed side 3 and with a removable side 4 held by clips 5 and bolts 6 on the felly 1. The numeral 7 marks a casing supported on the rim 2, and engaged against lateral movement by the side members 3 and 4:.

Within the casing 7 is located an expansible metal frame which may be denominated an inner tube since it exercises the functions of an inner tube. The expansible frame may be variously constructed, but, preferably, it comprises transverse spring strips 8 secured as indicated at 38 to oppositely disposed rings 10, the frame having free longitudinal edges 28. A lining 9 is interposed between the frame above defined and the inner surface of the casing 7 'to the end that the easing may not be worn or rusted by contact with the expansible frame.

The rings 10, and consequently the frame or inner tube above alluded to, may be made in sections, the sections of the rings 10 being denoted by the numeral 11. Each section 11 is provided at its ends with inwardly projecting cars 12. Into the ear of one section, a screw 1a is threaded, the screw having a smooth reduced tip 15 journaled for rotation in a recess 16 on the ear of an adjoining section 11. It will be obvious that by advancing the screws 14, the ends of the sections 11 may be separated, and that, in this way, the expansible frame or inner tube may be enlarged circumferentially, so as to fit properly within casings which are oversized, stretched or distorted.

Oppositely disposed screws 17 are fixed at their outer ends in the rings 10. On the inner ends of each pair of screws 17, a rotatable member 18 is mounted, the screws being oppositely threaded into the said member, and the latter having an opening 19 from which dirt or foreign matter which may happen to be lodged in the openings of the member 18 which receives the screws 17 will fall, when the member 18 is rotated and when the screws 17 are drawn toward each other to efiect a contraction of the frame. The rotatable member 18 is supplied with arms 20, adapted to be engaged in a slot 23 formed in a wrench 22. Through the instrumentality of the wrench 22, the rotatable members 18 may be turned, thereby drawing the screws 17 toward each other and effecting a contraction of the frame. Similarly, the casing may be expanded. The distance between the beads of the casing 7 may be measured through the instrumentality of a U-shaped gauge 21, the casing being expanded until the beads of the casing are so located with respect to each other that they will fit between the fixed side 3 and the removable side 4-. Referring particularly to Figure 2 it will be noted that the arms 20 of the rotatable member 18 are of such a length that when the casing is mounted on the rim 2, the rim will prevent the members 18 from rotating. Consequently, the expansible frame cannot expand or contract automatically or accidentally after the casing has been placed on the rim, a loosening of the frame, within the casing, being impossible.

Having thus described the invention, what is claimed is z 1. In a device of the class described, a casing; a transversely expansible frame in 3. A device of the class described, constructed as set forth in claim 1, and further characterized by the fact that the frame is composed of a plurality of sections; and thrust connectionsuniting the ends of the sections, to secure a circumferential expansion of the frame.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two Witnesses.

FRANK E. BESSLER.

Witnesses M. F. HAMMAR, GRACE Tni'r'r,

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