US1691491A - Process of making rims - Google Patents

Description

Nov. 13, 192 8.

E. A. NELSON PROCESS OF MAKING RIMS Filed Feb. 25, 1924 I INVENTORi- EMILA;NLS0I VIU a 7 s Patented Nov. 13, 1928.

v UNITED sTATE f 1,691,491 PATENT; ornce.

EMIL a Nansen, or moron, rnnns tvamafassrenon T Bonn wn nn'i. con PANY, on PHILADELPHIA, PENNSYLVANIA,INCORPORATION or 'rnns'rmrnor PENNSYLVANIA.

. rnocnss'or mmemms.

Application flled l ebruary 25, 1924. serial'l 'o, 694,894.

My invention relates to an improved process of making rims and has to do, more particularly, with a new and improved process by means of which rims for automobile wheels may be manufactured.

The chief object of my invention is to provide aprocess of making automobile wheel rims by means of which rims can be manufactured more efliciently and at lower. cost 10 than heretofore.

A further object of my invention is to provide a process of making such rims which utilizes a strip of metal of symmetrical cross section, which can be rolled conveniently at the rolling mill, and which avoids the use of extensive flanging operations after the rim has been formed. v

A further object of my invention is to provide a process of making rims in which the cross section of the finished rim is imparted initially to the strip of metal from which the rim is to made, so as to avoid any flanging or forming operations after the strip has been welded into annular form.

Further objects, and objects relating to details and economies of construction and operation, will definitely appear from the de tailed description to follow. In one instance, I accomplish the objects of my invention by the devices and means set forth in the following specification. My invention is clearly defined and pointed out in the appended claim. A process constituting a preferred embodiment of the invention is illustrated in the accompanying drawings, forming a part of this specification, in 'which- Fig. 1 shows a strip ,of metal formed in accordance with my invention and welded to form an annulus from which two rims, are

- to be formed, and 7 I Fig. 2 is a similar yiev. of a slight modification.

In the drawings, the same reference numerals refer to the same parts throughout the several views. 7

In general, my invention consists in pr0- viding a strip of metal, which may be rolled, at the rolling mill, to a form having the cross section which isto be given to the finished rims, in bending a strip of metal of this cross section, and of suitable length, to form an annulus, the adjacent ends of said strip being welded together so that a complete ring is formed, and, then, severing this annulus along the central, longitudinal plane to form two cpmpleterims. In carrying out my invention, I provide a strip of metal, having the cross-section shown in Fig. 1, and com rising the parallel body portions, 10 an 11,

which lie in a single plane and are joined by the semicylindrical rib, 12. At the. outer edges of the portions, 10 and 11, there are provided the downwardly inclined portions, 13, from which extend the upwardly extending flanges, 14. It willbe noted that this strip of metalv is symmetrical about the center line, and that there is a substantially equal disposition of metal above and below the plane of the portions, 10 and 11. Consequently, this is a strip or bar of aformwhich can be produced without difficulty by the rolling mill. .1 take a strip of metal, of this cross section and of the desired length, de-

pending upon the size of the rim to be formed,

and bend it around into a circle so that the free ends of this strip meet. These free ends are then joined together, for instance, by buttwelding, forming an annulus having the cross-section shown in Fig. 1. I next sever this annulus into two similar parts by cutting along the line, 15, for instance, by circle shearing. This provides two complete rims of asymmetrical form as respects their central vertical longitudinal planes, each with a side flange, formed by the two halves of the semicylindrieal rib, 12, and a gutter formed 'by the parts, 13 and 14, which is adapted to receive a detachable side flange, By this means, I may produce two rims from a single strip of metal and it will not be necessary to carry out any extensive flang ing or forming operations after the rim has been brought to the circular form. TlllS makes tor a more convenlent and economlcal production of these rims, and also provides a rim which is strong and durable. 7

As shown in Fig. 2, I may provide a rib 16 between the portions 10 and 11, which is severed at '17, as described, and afterwards subjected to a slight'forming operation to bend up the portions of the rib 16 so as to form the side flanges 18, as indicated in Fig. 2 by dotted lines. This subsequent flanglng operation is comparatively simple and inexpensive.

I am aware that the particular process described in this specification may be changed and varied considerably without departmg l0 op from the spirit of my invention and, therefore, I claim my invention broadly, as indicated by the appended claim. 1

Having thus described my invention, what i I claim as new and useful and desire to'secure by Letters Patent is '7 The process of making asymmetrical rims having an upstanding fixed retaining flange on one side and a depressed gutter on the in egral metal strip with a central rib, plane portions on eachside of said rib constituting the body of the rim, and gutters on the outer site side, comprising the forming of an edg f said plane portion wfl y 1 I metrical combined cross-section is devised, into "circular" form,*j01n-i bending said strip ing the ends of said strip toform an annulus,

and severing said annulusalong the central lineof said rib to form twohcomplete, identlcal and mutually independent asymmetrical rims, each adapted to retain a tire :u 'Qnthe seating of ade tachable flange i'n't e Tsaid gutter.

In witness whereof, I afiix my signature.

" EMIL A; Manson:

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