US1319142A - Method of and apparatus or mill for rolling or forming car-wheels or other circular bodies. - Google Patents

Description

L. F. DlETER.

MEIHOD OF AND APPARATUS on MILL Fen ROLLING on FORMING CAR WHEELS on OTHER CIRCULAR BODIES.

APPLICAIIOH mm oer. 9. 19M.

Patented Oct. 21 1919.

I4 SHEETS--91! r r V r L F. DIETER. METHOD OF MB APARiTus 0H MILL FOR 90mm; 08 mamme cm WHELS 03 OTHER CIRCULAR BODIES.

APPLICATION min 00?. 9. I911.

Pntcntml Oct. 21, 1919.

l4 SHEETS- SHEET 2.

m amk k L. F. DIETER.

METHOD OF AND APPARAIUS OB MILL F03 ROLLING 0R FORMING CAR WHEELS OR OTHER CHHJULAB BODIES.

APPucafleu min act. 9, I917.

Patented Oct. 21, 1919.

I4 SHEETSSHEET 3.

' L. F. mum.

Minion or we APPARATUS on m 2H. F03 ROLLING 0R FORMING CAR WHEELS OR OTHER CIRCULAR BODIES. Avmcman man 001.9. nu.

.Patent ed Oct. 21,1919. J u satin-snare.

man. 7 Y

V H 424a WHEELS-0R ornsa Bums;

OCT- 9- l9"- Hf k V Patented Oct. 21.1919. w L 7 14 "EITS-SHEET ii A y L. F. DIETER'.

mamas or AM] APPARATUS o3 um'rgl; mums on rp'amjh'a'sm wil szig on otmzn v V V L. F. METER. MEIHOII 01- um mmms'on mu FOR mums on romance cmwuauson 01mm a h .J J.

25m Oct. 21,1919.

GROULAB BONES. Y hi0! mm o'cT. 9.11m.

7 ha miujgsflsiiimeon sonmni 'cin WHEELS 0n OTHER APPHCATION man 'oc'r. s. m1. Patented Oct. 21 1919.

l H SHEETSSHEEI II).

V L. F. DIETEB. Minion or M0 APPARATUS 0R mu. FOR noums on FORMING can wnsas OR OTHER CIRCULAR BODIES.

APPLICATION fIlED OCT. 9. I9.

Patented Oct. 21,1919.

- H SHEETS-SNEEI ll.

V L. r. DLETER. METHOD OF AND AP 'PABHUS OR IMLL FOR ROLLING 0B FORMING OAR WHEELS OR OTHER CIRCULAR BODlES.

APPLICATION FILED OCT. 9. 39!?- Patented Oct. 21 u aunts-sun 2. 2.145 466 UNITED STATES PATENT OFFICE.

reins r. mama, or serrate, new some I v lemon or m runners on MILL FOB some on. resume canon omen. omcumn norms.

' To all whom it may concern:

. Method of and A paratus or Millfor- Rolling or Forming lar Bodies, of which the following is a s i. 'fication accompanied by fourteen sheets of her 11, 191

drawings formm rt of this specificatio- The features ci my invention claim dd herein are related to the invention of my original agplication for patent filed June 15 1911, Sen No. 633,343, Patent No. 1,243,050.

This application is. a continuation of mysaid original application, and, for carrying out my invention I refer to use an'apparatus or mill such or instance as shown and described in my said original application with the exception of the modifications in operations and parts thereof herein. shown and described, otherwise 'the connecting parts of such an apparatus or mill shown in the accompanying drawings are illustrative of of my said ori 'nal application.

0 subject matter of t is invention is also partly described in and certain features of the invention herein described, but not herein claimed, are claimed in my following applications, viz: said original agiplication for patent filed June 15, 1911, erial No. 633,3-13, Patent No. 1,243,050; a plication for patent filed October10, 191 Serial No. 124,921, Patent No. 1,243,051; application for patent filed November 20, 1916, Serial No. 132,372, Patent .No. 1,243,052; agplication for patent filed November 22, 1916, eria-l No. 132,815, Patent No. 1,243,053; pplication for patent filed January 10, 191 Serial No. 141,558, Patent 'No. 1,246,067; aaeplication for patent filed June 22, 1917, l rial No. 176,333; application for patent filed Octo- Serial No. 195,922; a-pglication for patent filed November 9, 1917, erial No. 201,036; application for patent filed November 9, 1917, Serial No. 201,155.

This invention relates to a novel and useful method or process and means for the manufacturing or the making of rolled cal wheels, disk-wheels, or other circular bodies from properly heated ingots, blooms, blanks or other work-pieces. y

In my said original application, the car wheel or other circular body is' centrally Specification of letter: Patent.

colfllmltiqll. of lppliceflon Ber-kl m). seam, new: 15,1011: run

Eerie! in. 1mm.

rWheels or other Circu Patented Oct. 21, 1919. application flied oa me, 1011.

pierced or penetrated or centered and is rolled or. ed by mils operating inst the opposite sides and against the erip and face of the work-piece and is dis ed while the work-piece is mtatedby said .rolls.

Applicant 1; aware thatv heretofore it has pro sod to roll car wheels on a form: in -die a to confermto the center or hu part, e' web part and the rim part at one entireside of the car wheel to be formed and also conform to the outer or peripheral face of the car wheel, the car wheel bemg rolled on its other side only; that is, at one side of its web and at one side of the edge of its rim. During such rolling action, a work-piece of a given diameter will be rolled to much larger diameter and to the form of a car wheel, such larger diameter being determined and governed by said forming-die. With such an arrangement, the metal in the workiece is not worked at its outer peri hera l, face and therefore will be extended insteadof comthe tread or outer perip of the car wheel.

In this invention the car wheeler similar circular article is first formed by combmed roll-forging and die-fol" 'ng means into undished form and is dished while the same revolves, or left undished, it being pierced or penetrated or centered and rolled at one side, thereby forcing metal of the work-piece against the forming-die, against or over a center or Hiercer ssed axially throu h said formingie or ormed integral wi into the depressed portion or rtions of said die, and also beyond an over the peripheral edge of said die, the actual formmg. ortion of the preferred forming-die reac i only to the inner peripheral face of the rim of the car wheel or other article at one side thereof when finished and being shaped to conform to thecenter or hub part and the web part and the inner peripheral or inner circumferential face of the rim portion of the finished rolled or formed car wheel or other circular body at one side thereof; all other portions or surfaces of the car wheel or other body bein rolled or formed directly by rolls and. t as car wheel or other circular body being dished while the same revolves or being left undished. all as said die, and

in the manner hereinafter shown and a whole car wheel may. be completely rolled pr formed and1 bile1 dishied or bilnot dit'slhedfi roma ro'pery eate t. oom an. or other work-piece, incllil? and thoroughly practicable manner with the same heat'and before the finished rolled and dished'or undished wheel, as the case ma be, is removed from theapparatus or mi while at the same time securing a uniform and maximum densit and homogeneity in the metal therein, wluch contributes mateii ally to the strength and durabilit thereof.

For instance, the metal, when being rolled or formed fronra blank or other workeice into alcar-wheel or ,other circular. 0 feet according to m invention, is not expanded radially; es ecially is this avoided in the work-piece is truly rolled or-formed'and insurface consistin trend and ange or rim portion and therefore there is no ossibility ofthe formation of incipient crac in the tread "and flange portion or in the peripheral face of the rim. With my invention the metal in the creases in density with increased working, thus giving to the metal both its'due maximum strength and maximum to wear. In other w'ords,'this invention of rolling or forming produces the same effect in the metal of the rim portion as if the web portion. of the wheel were not in existence and the rim ortionrolled or formed its totalwidth on its inner peripheral surface or surfaces, as is done on its outer ripheral of the tread an flan A further ob ect of my invention 15 to provide method and means as hereinafter described by which a properly heated ingot, bloom, blank or other work-piece may be centered, or ierced, or penetrated and can; tel-ed, or hot 1 centered and pierced ,or penetrated at one or both sides and also supported, and therefrom, with the same heat and in the same apparatus or mill, at car wheel or other circular article may be completely rolled or formed. By such means and method as herein shown and described, the time 1 aired in so produci car wheels or other circular articles is mub fi lessened and the cost of making such wheels or other articles is enormously reduced.

In carrying out this inventioit'l employ means during the 0 rating process a the workpiece if t e workiece wo d be-' by means of V screws or similar mechanism. To a id mg the piercing, or penetrating, or forming at. the'xopposite sides of the work-piece of a rudimentary; bore, or a part or parts thereof, in a simp a "continually cl that is to say, for instance, the metal in a .properly heated workpiece is very soft in comparison with themetal in its normal .015 cold condition and therefore has not required resistance, which is absolutely neefor firmly supporting the work-piece, and-on which 'accpuut the work-piece will loose between or on its supportm centrally supported or hel this, I put the work-piece automatically ped condition suppilmng centrally against the work-piece, which mst 3 t is e by applying pressure pressure acts continually and automatically against the work-piece from op osite sides. work-piece orswheel, whi e centrally supported by its supporting means, is therefore, also automatically put into clamped condition, whichi-prevents the hub or center portion -of the workpiece from becoming oose on its supporting means and from being forced out of its true axial or central and desired lateral positions with respectto the rim rtion-of the work-piece or wheel during t e rolling or operating processes, &0. aid constant clamping force or constant clamping pressure automatically and continually remains during said operating processes, and for moving the hub or center portion of the ,work-piece axially in either. direction while the same is so supported and "as firmly clamped, all as hereinafter fully described and also described in my said orfinal application. a

other object of my invention is the provision of a novel method and means for completely centering or piercing or penetrating and supporting properly heated ingots, blooms, anks or other work-pieces and rolling or forming and dishing the work-piece to desired form while so supported; for rolling, formi or shaping it uh on a workpiece where y the hub 18 formed smooth on all its surfaces to its desiredform or shape without leaving a raised portion or fin which would have to be removed afterward by turning or other costly means; for rolling or formin the inner peripheral face or faces of t e marginal or.- rim ortion of a work-piece or wheel suflicien y inclined outward y toward the outer peripheral, face of the workiece or wheel, as andv for the purpose hereinafter described and also as described in my said original application for rolling of the total erlpheral face of the work-piece or wheel rst to beaked form,

plic-ation,

ripheral face to desired finished form without leaving a ralsed portion or n as and for the purpose hereinafter described and also describe in my said original apand then rolling the so beak undisliihg or redishing car wheels or other circularobjects while rotating; for rollin metal fromfthe rim ortion onto the we portion during the rol ingand dishingprocess'; for centering a wor piece and sizing and compressing the hub while in pro erly heated condition; and, for decreasing t e diameter of the bore in a wheel or other circular work-piece by ismetrically compressing the metal of the hub portion of the work-piece.

Further objects of my invention are to rovide a novel method and means for'rollmg or forming a car wheel or other circular, or approximately circular, work-piece sb as to cause metal in the same to flow in lateral and radial lines, or substantially so, for the purpose of forminsuccessively or alternately the web, the car wheel or other work-pice; for limiting the lateral flow of metal at the hub or at the marginal or rim portion or at both said I huh and rim Kortions; for 1-0 ling the peripheral face or anged tread of the rim portion of said car wheel or other workwoe to true circular form and thereby aso uniformly condensing the metal in said rim portion to maximum? for retelling, reforming or reworking a car wheel or other similar object; and, for utilizing car wheels or reworking the same to form other'circular objects therefrom. i

A still further object of my invention is to provide a method and an apparatus or mill wherein means or devices are systematically arranged, whereby car wheels, disk-wheels;

ipe flanges or other circular or SLflBlil-I' dies or articles ma be rolled'or formed and dished either wit use of the formingdie and all the rolls, or for instance with use only of the forming-die, the herein named ed ing and web ro ing roll, the edg ing and ie-supporting roll and the'tread or face rolling roll; or, with use only of tlie formin die, the herein named web rolling roll, the edgingand die-su aperting roll, the tread or face rollin ro l and tread or face finishing roll; or, wit use only of the forming-die, the heroin named web finishing roll, the herein named die-supporting roll, and the trend or face finishing roll 7. or, with use only of the forming-die, the

which ma portion 'thereo device. the roughing mill or the roughing side of the ab andthe rim of said edging and rolling or for-min with either the formingdie and all the ro ls, or only with the formingdie and any of the combination of rolls above mentioned. The various parts are' so arranged thatsaid apparatus or mill actually consists of two mills made in one, each of g be 0 erated and used separatel or indepen ently of the other mill, whic other mill will not, in such case used. Said two mills are located one at each side of the axes or extended axes of the piercers or work-supporting centers and dishing One of said mills is herein named apparatus or mill, alt-hon h car wheels, diskwheels, pi e flanges or ot ier articles may rolled or ormed therewith to the finish, and consists of the forming-die. the herein named edging and ,nveh rollin roll, the edging and die-supporting roll and tread or face roughing roll. The other of said two mills is herein named the finishing mill or finishing side of the apparatus or mill and consists of the.

forminglie, the herein named web finishing roll. the dic-supportingroll and tread or face finishing roll. The centering or the piercing and centering and the work-supporting and dishing device and also the raismg, lowering and retaining device shown and described in my said original application are all located at the center and between said two mills and may all he used with either ofsaid two mills or with the whole sip aratus or mill, as the case may be.

n the manufacture of car wheels or other circular objects according to m the cost of operation is great y reduced. The production of car wheels and the like is thereby greatly cheapened, the output increased, and the metal, for instance, in the trend and flange or the peripheral face and the whole rim portion of car wheels is rolled and isthereby uniformly condensed to its maximum or substantiall so, thereby giving the metal in said perip ieral face and rim portion its due maximum and uniform strength and its due maximum and uniform resistance to wear, and thereby the said peripheral face and rim portion of the car wheel is also rolled smooth on all its surfaces to the desired form or shape without leaving a raised circular portion or fin which woul have to be removed afterward by turning or other costly means.

It is, of course, understood that the various steps herein described may all be performed, in accordance with my invention, in the same apparatus or mill with one heat, or

invention,

each of said steps may be efi'ected with a separate heat treatment of the work-plece and separate operation, as for instance described in my said original application. I It will however, be apparent that any step or o eration may be completed performance of any other etc may be required, but it is to that all the steps of my method herein .described are necessary in the manufacture of a co lete car wheel or other similar body to em dy therein all the advantages of my invention. Further objects of the invention will hereinafter appear. I

My invention consists in the novel method or recess herein described and more particu arly pointed out also consists inthe novel means, in the arrangement thereof, in the novel features of construction and 1n the combination of parts herein described and more particularly pointed out in the claims.

I prefer to carry out my invention with an apparatus or mill of the type or kind as for instance described and claimed in my aforesaid original application and in applications filed by me and having the heroinbefore mentioned serial numbers and filing dates, as will be made clear hereinafter.

In the accompanying I illustrate my invention to vices or means I prefer to e ing out my invention: I

Fi ure 1 is a sectional plan view illustrating t 1e main operating parts of one form of an apparatus or mill, such as I prefer to employ for rollin or forming car wheels or other circular bodies, and such as forinstance shown and described in my aforesaid original ap lication, with the exce tion for instance 0 said forming-die am of the modifications of one or both work-supporting headsand of rolls which also support said forming-die and of the modifications of details and of the modifications of operations, &c.. all as hereinafter more fully shown and described. The workiece is not shown in said Fig. 1, but the wor -piece will be placed near or against said forming-die and between the piercers or work-supporting centers as hereinafter fully shown and described.

Fig. 2 is a side elevation of one of the oscillating frames; that is, the oscillating frame for the roll shaft having said edging and web rolling roll shown in Fig. 1, and shows the manner of supporting, niding, positioning, shifting and driving said shaft.

l ig. 3 is a plan view of a portion of the said edging and web rolling roll shaft with its roll. a portion of its so porting means and the gage rods, of whic in this figure three are shown, whereby the radial posior steps, as

ther with deploy in carryto partly roll or orm the work-piece and later be operated upon in the understood in the claims; and it arrangement and drawings, in which .supported thereby, ported on one of said pierccrs or centers, and

tions of saidroll against the work: iece and the range of movement of said rol radially with respect to the work-piece are determine as hereinafter described and also described in my said original application.

Fig. 4 is a cross-sectlon taken on line 4-4, Fig. 3 looking in the direction of the arrows at said line.

Fig. 5 is a sectional plan view of a modified orm of the. main operatin parts of the apparatus or mill shown in; fi lg. 1. The work-piece is not shown in Fig. 5, but the workiecewill. be placed near or against said orming-die and between the pzercers or work-supporting centers, as hereinafter fully shown and described.

lugs. 6, 7 andzB are sectional plan views of a portion of one form of the apparatus or inillshowing my method and device for centering or. for'piercing or penetrating and centering, for re ling, and or dishing, for instance, flanged car wheels; therein an ingot, bloom, blank or other work-piece may also be centered or pierced or netrated and centered and rolled and dished with the use of the forming-die and with all the rolls of the a aratus or mill as herein shown and decor: ed, and the releasin of the work-piece or finished product, all as hereinafter fully described.

The parts shown in Figs. 9 to 16 inclusiv are n'lodifications of those shown in Figs. 6, 7 and 8, as hereinafter fully described.

Figs. 17 to 24 inclusive, for instance, illustrate somewhat modified forms of the apparatus or mill illustrated in the Fi 1 to 16 inclusive, as hereinafter describetf Fig. 25 is a sectional side elevation, on enlarged scale, showing the adjacent ends of the supporting heads, thepieroers or centers the forming-die supsome of the rolls; therein is also shown a work-piece rolled or formed and dished to the finished rolled and dished form of the dished car wheel shown at F.

Fig. 26 is a, similar sectional side elevation, showin one of the supporting heads provided wit roller-supports acting against or in contact with the marginal portion of the formin -dietherein is shown a workpiece rolle or ormed to the finished form of the nndished car wheel shown at F.

Fig. 27 is a sectional end view of one of said roller-supports together with its bracket.

Fig. 28 is a sectional. view taken on line 2828, Fig. 27, looking in direction of the arrows at said line.

Fig.- 29 is a horizontal section through part of the su )porting axle and the inner end of one oi the supporting heads, as shown and described in plication.

Figs. 30 to 41 inclusive illustrate. on onmy said original aplarged moving or operating one of the supporting axles together with its piercer or center independent of its supporting head, or for moving said supportin hea together with the supporting axle and its piercer or center, as hereinafter fully described.

Fig. 42 is a plan view of Fig.43.

Fig. 4.3 is a sectional view throu h line 4343, Fig. 42, showin the forming-die in diamctral section and t 1e parts'shown are inv proper position to receive a workiece, as hereinafter fully described. In this gure the piercer or center is longitudinally moved together with its supporting head, as indicated b the dotted line.

Figs. 44 an 45 are similar sectional views as Fig. 43 and show difierent forms of'the forming-die and rolls associated with the forming-die.

Fig. 46 is a sectional view showing the forming-die and the work-piece or fimshed product in diametral sections. In this fi re is shown a rolled or formed and dished iskwheel or center such as used forinstance in tired car wheels; otherwise this illustration is similar tothe illustrationinFig. 18. Said disk-wheel or center is rolled or formed with the forming-die, one of the herein nam edging and web rolling rolls, one of the herein named edging and dieesupportm rolls, and a single face roll as own, an it is dished into the fgrm shown, as and in the manner hereinafter described.

' formed with the forming-die,

Fig. 47 is a sectional view similar to Fig. 46. In this figure is shown a rolled or formed and dished car wheel similar to Fig. 20. Said dished car wheel is rolled or herein named edging and web rolling rolls, one of the herein named edging and die-supporting rolls, a face rollin roll, and a face finishing roll as shown, an it is dished into theform shown, as and in the manner hereinafter described.

Fig. 48 is a similar sectional view. The

' dished car wheel shown in this rolled or formed with figure is the forming- 'e, one of the herein named web finishing rolls, one of the herein named die-supporting rolls, a face rolling roll, and a face finishing roll as shown and as hereinafter de 4 scribed.

Fig. 49 is a similar sectional view; in this figure is shown a rolled or formed and dished car wheel similar to Fig. 24. Said dished car wheel is rolled or formed with the forming-die, one of the herein named edging and web rolling rolls formed wholly conical as shown, oneof the herein named edging and die-supporting rolls, one of the herein named web finishing rolls, one of the herein named die'supporting rolls, a face finishing roll, all as shown; and it is dished, as hereinafter described.

scales the device for longitudinally one hi the and FigfBO is a similar sectional view as the one shown in Fig. 43 with the exception that in Fig. 50 the supporting axle with its piercer or supporting center is longitudinally moved or operated independent of its supporting head.

igs. 51 to 67 show sectional views illustrating various combinations and difl'erent forms of rolls, piercers or centers, and forming-dies. These fi illustrate, in accordance with my invention, certain piercing or centering or supporting steps and formin or rolhn and forming steps for producing the di ed car wheel shown for mstancejn the Fig. 54, 57, 61, 63 or 67, or other figures, as hereinafter described.

Fig. 68 is a sectional view showing a portion ofanother form of the forming-die and the centering orsupporting means. Therein is shown only the center portion of both the work-piece and forming-die.

Fig. 69 is a sectional view showing the central portion of the work-piece provided with a arge central opening and still another form of centering means in which the centering element at one side of the workpiece is in 2.1 with the formin -die. Therein is also shown only the cent portion of the forming-die.

Fig. 70 is a sectional view showing ,the central portion ously formed as shown and provided with central depressions or pockets into which the pioneers or centers are to be penetrated or entered, one of said piercers or centers geing shown slidable within the forming- 1e. portion of the forming-die.

' Fig. 71 is a sectional view showing the central portion of the workiece provided 'with an axial or a proxima y axial opening and showing ifierent forms of centering elements at opposite sides of the workpiece, the centerm element at one side bemg in the form 0 a piercer or center and the other being in the form of a formingdie which aiso servesin forming a hub portion onto the work-piece and which forming die is keyed or otherwise securel fastened to the work-sup rting axle. erein is also shown only t o central portion of the forming-die.

Fig. 72 is a sectional view showing a work-piece reviously formed as shown and placed on t e forming-die and, also showmg the centering means. Therein is shown of the work-piece p i- Therein is also shown only the central only the central portion of both the workbeing shown with th hub bored. In Fig.

77 said car wheel has its web formed in undished position; that is, at right angles with the axis of. the wheel, but the hub of I invention,

this wheel is not formed central to the web but is formed into the position required of a dished wheel, that is, the hub is in the same osition as is the hub in Fig. 76. In Fig. F8 said car wheel is shown undished.

Figs. 79 to 82 illustrate; according to my certain piercing and rolling or forming steps for producing the dished car wheel, for instance shown in Fig. 82, all as hereinafter described.

Fig. 83 is a sectional view showing side rolls substituted for the forming-die and its coacting rolls, whereby with the mistance of the rolls on the opposite side, the car wheel may be dished, or dished and rolled afterbeing rolled or instance shown in Fig. 81.

Fig. 84 is a sectional view showing a workpiece provided with an opening somewhat off-center and illustrating the method of piercing or penetrating the work-piece centrally, regardless of the position of the opening therein.

Fig. 85 is a diametral section of the com-' pletely rolled or formed and dished car wheel of Fig. 82 taken 86, showing the inner the rim at one side of t 1e work-piece formed to a different angle than the inner eripheral surface at the otherside thereof.

Fig. 86 is a fragmentary plan view of the completely finished car wheel of Fig. 82, rolled or formed in accordance with my inon line 85-85, Fig. ripheral surface of 4 vention herein described.

to the ones s Fig. 87 is a diametral section of a car wheel completely rolled or formed and dished in accordance with m invention herein described and showing t e inner peripheral face of the rim at one side of the car wheel formed to the same angle as the inner peripheral face at the other side thereof.

Fig. 88 shows sectional view similar to Fig. 43 or Fig. 50 with the exception that the die-supporting portion of the side rolls and the forming-die in Fig. 88 are formed somewhat diiferent.

Figs. 89 and 90 show the inclination or angle of the peripheral forming-edge or face of the forming-die somewhat different, the operatin process or steps being similar own in Figs. 79 to 82.

Figs. 91 to 94.- inclusive, illustrate, according to my invention, certain rollingor forming steps in rolling or forming the finished rolled undished car wheel shown in Fig. 94, all as hereinafter described.

Figs. 95 and 96 illustrate, according to my invention, certain rolling or forming steps in rolling or forming the dished disk different forms of piercers formed to the form for tired car w piercers or centers formed as shown, and with allathe rolls, of which each is formed as shown, and ashereinafter described.

Figs. 97 and 98 illustrate, for instance, certain steps according to my invention for reworking or rerolling a car wheel, includingjhe reworking of its hub portion.

igs. 99 and 100 show, for instance, certain steps accordin to my invention for rolling or formin disk-wheels, pipe flanges, or similar artic es from ingots, blooms, blanks or other work-pieces or for reworking car wheels or other circular objects into as hereinafter described.

Fig. 101is a sectional view showing a different combination of rolls, combined with 01' centers. Therein is shown the forming-die driven by gear teeth formed thereon meshing with the teeth formed on the edging and die-supporting .roll, which is positively driven from its shaft.

section taken on section taken on line 104, Fig. 103.

Fig. 105 is an enlarged sectional view showing in detail the sup ortin the. formingdie and tie rol s therewith shown in Fig. 5.

Fig. "106 is a sectional elevation of the same;

Fig. 107 is an end view with the'piercer or'centcr and forming-die removed and the su porting axle shown in section. igs. 108 and 109 show in detail the spindles or supporting the die-supporting ro'lls shown in Fig. 105.

Figs. 110 and 111 illustrate dia rammatically improper flow of metal resufiing from improper working of the metal in 'the rim portion of a car wheel or other circular object having a web, during the formin of said rim portion, all of which is avoide b my invention, as hereinafter described and also described in my said original application.

Fig. 112 illustrates, for instance, the proper flow of metal during the forming of a tire havin no web, such as used for some ieels, as hereinafter described and also described in my said original applicoacting I cation.

Figs. 113 and 114 are diagrammatic illustrations showing the result of the rolling or forming-of the rim of a car wheel in accordance with my invention as hereinafter described, and also described in my said original application.

Figs. 1.15, 116 and 117 are similar diameans for disk-wheels, pipe flanges or similar articles

Images