US848927A

US848927A - Method of making wheels.

Info

Publication number: US848927A
Application number: US32340106A
Authority: US
Inventors: Charles T Schoen
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-06-25
Filing date: 1906-06-25
Publication date: 1907-04-02
Anticipated expiration: 1924-04-02

Description

No. 848,927. PA TENTED APR. 2, 1907.

I G. T. SCHOEN.

' METHOD OF MAKING WHEELS.

APPLICATION FILED JUNE 25, 1906.

@vihwooea 6 a e/M; fi/m.

CHARLES T. SCHOEN, or

MOYLAN, PENNSYLVANIA.

METHOD OF MAKmG WHEELS.

naseaea'z.

' Application filed June 25.

Specification of Letters Patent.

Patented April 2, 1907. v

1906. SeriaLNo. 323.401.

To all whom it may concern.-

' Be it known, that I, CHARLES T. SoHoEN, a citizen of the United States, residing at Moylan, in the county of Delaware and State with their product between.

of Pennsylvania, have invented a certain new and useful Improvement in Methods of Making Wheels, of which the followingis a .full, clear, and exact description.

In making Wheels from blanks of wrought metal the operations'of shaping the blank for the subsequent operations of shapin the wheel have been costly in time and Fabor, and where the blank has been sheared in order to make it circular and of approximate 'Wheel size there has been considerable waste of metal.

In the present invention these expenses are ractically eliminated, since the angular blan cut from rolled, preferably steel, stock is either of a size .to be droppedinto the pressing-dies or of such size as to require only the nipping off of its corners to permit it to be dropped in such dies, and it is of the ap proximate Weight of.the finished wheel, and then while plastic it is subjected to die-pressure on its fiat sides, whereby it is caused to flow out and fill up the matrix. In this way a wheel may be producedwith or Without a flange and dished or coned or not, as desired,

or a blank may be produced requiring to. be'

rolled and dished or coned, if desired, in order to complete its finish or to have cogs or teeth out in its rim to form a gear-wheel:

In the accompanying drawings, illustrating the invention, in the several figures of which like parts are similarly designated, Figure 1 shows a suitable blank in edge and lan views. Fig. 2 shows in plan view, full lines, the blank with its four corners nipped and indicating by dotted lines a die-matrix. Fig. 3is a cross-section of the first-operation dies with their product between. Fig. 4. is a plan View of the product of the first-operation dies. Fig. 5 is a cross-section of the. second-operation 'dies with their product between. Fig. 6 is a cross-section of the punched wheel. Fig. 7 1s a cross-section of a pair of dies for dishing or coning the wheel Fig. 8 is a cross-section of the product of the dies of Fig. 7. I Fig. 9 is an heel of Fig. 5 .or of Fig. punched and ready for use or such other finishing as may be required to fit it for any special use. Fig.

10 is'a cross-section of a-pair of dies withtheir product between for forming a wheel or elevation of the cari. blank that may be gear cut. Fig. 11 .is 'a cross-section, and Fig. 12. is an elevation,.of the product of thedies of Fig. 10. The blank 1 of Fig. '1 is of selected rolled stockacut to size and free of imperfections. 'i It is'preferably of steel and is treated hot or in such a state of plasticity as to flow under i the pressure of the dies. It may have its 1 corners or angles nipped off, as seenin Fig. 2 or if the female die is large enough this nipping of the corners may be omitted. The blank is dropped into the female die 2 (shown in Fig. 3 and represented by the dotted circle in Fig. 2) and subjected to pressure by the male die3, with the result thatthe metal is-displaced to form the rudimentary hub 4, web 5, and rim 6/ The female die'hasthe peripheral wall f equal height to the thickness of the blank and also has the outwardlyhas the'central projection 9, between which and. the projection 8 the rudimentary hub is formed. .The male die 3 has a flat portion 10, an annular sloping projection 11, complemental t'o projection 8, and'a projection 12, complemental to projection 9. The metal of the blank is displaced by the projections and .forced outradrally by the sloping projections. The product of the dies, Fig. 3, is

dies Band 14, Fig. 5, wherein the annular projections 15 16 are flat and serve to flatten out the web, and

cavities

17 and 18 are provided to form a flanged rim.

If the wheel is to be dished orconed, then there may be used after the dies of Fig. 5 or in place of them the pair of dies shown in Fig. 7, wherein 19 is a female die having the rim-high wall 20, rim-cavity21, annular projection 22 of -a profile to form and dish or cone the web, and the hub-cavity 23. The complemental' male die 24 has the flat por tion 25, web-forming projection 26, and hubcavity 27 As indicated, this pair of dies may be used for a third operation upon the product of the dies of Fig. 5, or the operation performed by the two pairs of dies when used separately may be combined in the pair of dies of Fig. 7. Y'

' In operating blank is subjected to pressure sufiicient to cause the metal to flow freel and assume the contour of the die-faces, f ling out com pletely into a perfectly rounded and symmetrical wheel, which is afterward punchcsloping annular projection 8, between which and the wall the rim'is formed, and it also then transferred to and acted upon by the I the dies, Fig. 5 or 8, the

IIO

to obtain theaxle-hole and may be or not further treated by rolling, machining, milling, or other procedure in accordance with the requirements of the user. In point of fact the Wheel as it comes from the dies of Fig. or Fig. 8 with its axle-hole punched is finished. If desired, the projections for forming the web-may be sloped so as to make the web thinner next to therim. In making fiangeless' wheels for use as such or for cutting'with gear-teeth the blank is treated as before, but the second operation dies, Fig. 10,.are used insteadof those shown in Fi 5,"or these dies'may be used alone and t e entire process carried outin them. These dies comprise the female die 28, having the rim-cavity 29 and the rim-highwall 30, the web-formingilat annular projection- 31, f and the lrfib-forming projection 32, andlthej,

" male die 33, having a flat portion 34, cooper.-

ating with the rim-cavity 29, thefiatannular projection 35, cooperatingwith the web-forming projection 31, and the projection 36, cooperating with the hub-forming projection 32. The product, Figs. 11 and 12, of these dieshas its hub-hole punched out, and then its rim is finished for any desired purpose,- but particularly may be out with gear-teeth. -It will be observed that the die-pressure is brought directly upon the flat sides of the s, blank in its. course of treatment, and the rounding of the produet,is effected by displacement or flowing of the metal by such pressure within the preformed cavitiesof the dies.

, By the method described it is possible to avoid the expense'of rounding the'blank by forging, and it is also possible to avoid the waste of metal by shearing it round. The wheel orblank is perfectly rounded in the dies by the ressure to which it is subjected.

The pro nets of the 'process herein .described form the subjects of separate cases of even date herewith," one of which since filing has become Patent No. 834,761, dated October 30, 1906, and the other is Serial No. 323,403; a 1 What Ijclaim is r E- j 1. The method. of making wheels having a hub, a web, and a rim, which consists in angular flat lilank of the a proximate" weight of the finished wheel an subjecting .the'blank to pressure on its flat sides only in circular dies within which the blank is circumferentially confined during the pressing operation and dishing or coning the wheel while so confined. r i

In testimony whereof I have hereunto set my hand this 22d day of Julie, A. D. 1906.

CHARLES T. SCHOEN. Witnesses:

I M. R. JAcKsoN,

HARRY M. KURTZ.