US1599845A - Wheel - Google Patents

Description

Sept. 14 1926.

A. H. SHOEMAKER WHEEL Filed Oct. 21 1924 INVENTOR 14/1 /72 H Jfioemalier ATTORNEY Eat Patented Sept. 14, 1926.

UNITED STATES ALVIN H. SHOEMAKER, OF SEATTLE, WASHINGTON.

WHEEL.

Application filed October 21, 1924. Serial No. 744,905.

My invention relates to improvements in small metal disc wheels and methods of constructing the same and the object of my invention is to provide a small metal disc wheel that is strong, simple and durable in construction and not expensive to manufacture.

Another object is to provide a metal disc wheel having a novel hub structure in which the metal of the discs is crimped about a hub washer so as to afford great strength and rigidity to the wheel without seriously complicating the structure or process of manufacture of the same.

A further object is to provide a metal wheel formed of two discs having a separable metal rim grooved annularly for the reception of twin tires and arranged to securely clinch over the edges of the discs, said rim being applied quickly and easily by a method that leaves the wheel true and round.

Other and more specific objects will be apparent from the following description taken in connection with the accompanying drawings. I

In the drawings, Figure 1 is a view in side elevation of a wheel constructed in accordance with my invention.

Fig. 2 is a view of the same partly in section and partly in elevation on broken line 22 of Fig. 1.

Figs. 3 and 4 are fragmentary sectional views on a larger scale showing the manner of applying the rim to the wheel.

Referring to the drawings, throughout which like reference numerals designate like parts, 5 and 6 designate two similar metal discs of substantially dish shape having reversely dished peripheral portions 7, and being disposed with their concave sides together said discs having a continuous circular bearing against each other as at 8 at the location where the reversely dished portions join the portions 5 and 6. 10 is a centrally arranged tubular hearing member having its ends turned down on the exterior to form shoulders 11 that support the hub portions of the discs in spaced apart relation. The hub portions of the discs are bent or drawn outwardly as at 12 in the forming process to form bosses that fit over the reduced ends of the bearing tube 10 and against the shoulders 11, strong washers 13 are slipped over the bosses 12, the outer ends of the bosses 19. are bent or clinched over thewashers 13 and the ends of bearing tubes 10 are riveted or upset as at 14 to secure the discs on the bearing tube. The discs 5 and 6 are thus reinforced by the washer 13 at the hub where they are called upon to withstand the greatest strain and are rigidly and permanently secured to bearing tube 10 in a simple and inexpensive way so that they form a very substantial hub structure. The reversely bent peripheral portions 7 of the discs are adapted to receive a rim formed-of a single piece of flat sheet metal long enough to completely encircle the wheel. This rim is first formed as by running it through rolls, into substantially the shape shown in Fig. 3 with inwardly bent edges 15 and with depressed portions 16 between. the edges 15 forming annular grooves for receiving resilient tires 17. I have shown two tire receiving grooves but it will be understood that only one of said grooves, or more than two of said grooves may be used as desired.

In applying this rim to a wheel the inwardly curved edges 15 of therim member are placed on the periphery of the reversely curved portions 7 of the discs 5 as shown in Fig. 4- and a roller 18 having two side flanges 19 is applied as shown and caused to travel around the periphery of the wheel thereby clinching the inwardly curved edges 15 of the rim securely over the edges of the discs 5 and 6. This clinching process forces the two discs rigidly and securely together at the point 8 and, by reason of the curvature in the portions 15 forces the edges of said curved portions securely against the discs 5 and 6 and grips the edges of said disc between the curved portions 15 and the grooved portions 16 of the rim. The roller '18 travels in a true circle, or the wheel is turned on its axis in a true circle relative to the roller thus insuring that the rim will be true and accurate on the wheel.

The foregoing description and accompanying drawings clearly disclose a preferred embodiment of my invention but it will be understood that this disclosure is merely illustrative and that such changes in the invention may be made as are within the scope and spirit of the following claims.

I claim 1. In a wheel, two metal discs each having an outwardly protruding centralboss, a rim, a tubular hub having one end dis posed within boss, rigid means on the and resting against said shoulders and Washers fitted over said bosses, the outer ends of said bosses being clinched over said Washers and the outer ends of said hub being expanded against the clinched portions of said bosses.

The foregoing specification signed at Seattle, Washington, this 11th day of October, 19%.

ALVIN H. SHOEMAKER.

Images