US1606904A - Method and apparatus for rolling disks - Google Patents

Description

Nov.: 16 1926.` 1,606,904

H. R. GEER METHOD AND APPARATUS FOR ROLLING DISKS File@ Sept. 18, 1929 2 Sheets-Sheet 1 yI9 70 104 l g? if@ 'F' .1. "Wfl .INVENTOR lHR. GEER METHOD AND APPARATUS FOR ROLLING DISKS Nov.

Filed sept. 18, Y1920 2 Sheets-sheet 2 IN'vENToR rasata New.; i6, 1926.

PATENT OFFICE.

y HARRY n. enen, or Jonnsrown, PENNsYLvANIA, AssmNon, vPY MnsNn ASSIGN- ntnnrs, To PUDD WHEEL COMPANY, or PHILADELPHIA, PnNNsYLvANrA, A con- PORATON OF PENNSYLVANIA.

y i METHOD AND APPARATUS Pon ROLLING! DIsKs.

My invention relates to a method and apparatus for rolling suitable blanks into disks Which may have a relativelyy thick central portion anda thinner outer portion, or a 5 tapered outer portion either with or Without a comparatively thick periphery. rIhese disks may be used formany purposes and in various constructions, but are particularly adapted for automobile and other vehicle l@ wheels, agricultural implements, etc.

The objectl of my invention is 'to provide a method and apparatus for disk rolling which will produce disks from suitable blanks, and said disks may have a parallel '5 or tapered reduced form from Uthe vcentral portion towards the periphery, which are adapted to t-he uses outlined. Rolled disks have proven their superiority over machined turned disks in both quality and cost, and my method and machine are particularly adapted to shape the disks rapidly without unduly distorting' the grain of the metal and thereby increasing the strength and decreasing the cost of the disks.' v

My method of producing disks consists of taking a blank of steel, iron or other metal,

preferably a flat circular plate of the proper thickness and weight to produce the de-v sired disk, and if desired the blank can be heated in a suitable. furnace, and when p heated the Iblank is placed upon a metal platen, the center port-ion of the same clamped. or secured thereto, and in order-to center the blank it may-be provided with a central perforation, which fits over a corresponding projehtion'or'v stud on the platen.

'The portion clamped may be of any reasonable diameter, or as small as possible to provide the necessary holding surface. The platen may be either flatv or plane, or may havel a slight taper to correspond with the taper to be given the disk, or may have a groove inor naar tlieperiphery or elsewhere to produce a thickened portion of the disk if desired. Infact the platen may be of any form to suit the shape of the disk to be made.

.After heating, the blank is clamped in position on the platen, ,the platen rapidly rotated, and one or mo-re rolls are projected with force against the blank and gradually moved over lthe surface of the same to roll or spin. the blank into the desired shape.

Application led September 18, 1320. SerialNo. 411,083.

In doing'this I prefer to first project the roll or rolls against that portion of the blank near the center, thence traversing the rolls over the blank at a suitable speed toward 'the circumference, thus causing the outer portion of the blank to curl up from the surface of the 'platenfthereby eliminating the cooling effect of Athev platen thereon.

If the heated blank should be in contact with the metal platen for any considerable time, the heat would ,be conducted away from the blank so rapidly that it Would be difficult or impossible to make the plastic flow of metal by means of the rolls. LAs the rolls traverse from or ynear the centertoward the periphery, the steel blank or disk is'rotated by the rotating platen and the outer portion of the blank curves away from the rplaten contacting only with the air, and air being a nonconductor, the outer portion re-` mains hot as the rolling action progresses from the center toward the circumference.

I may use either one rolll or more, and I may rotate the platen and the desired pressure of the rolls against the blank or disk may be supplied in any manner or to anyv degree, as Will be readily understood.

In order to produce a disk with a thicker portion I may have a groove in the platen 'near the periphery (as'shown'in Fig. 9)v or elsewhere, or may stop the movement of the rolls a suificient distance from the edge of the disk, thus leaving thereon the thickened portion of the blank, or may move the rolls upwardly or away from the blank a certain distance to cause the thickening of the disk where desired While rolling the same.

My invention further comprises apparatus which firmly clamps the central portion of a blank and holds it against a rotating platen, which may be shaped to conform with the desired cross section of the disk, while a pair lof rolls, arranged on opposite vsides of the axis of the platen, frictionally engage and press forcibly against the blank as the rolls are fed toward the periphery of the-platen and the disk. The rotation of the platen and the blank clamped thereto` is thus transmitted to the rolls which, as they are fed outwardly, roll, thin, taper or otherwise shape the blank and increase the diameter thereof to the required degree. The blanks may be of any reasonable Ithickness and diameter and' :fre preferably of circular shape,

although they may be of other shapes if de-V sired. The rolls are preferably shaped to act one as a roughing roll and the other as a finishing roll and the axes of the rolls are arranged on opposite s ides of theaXis of the platen substantially in alignment. As the blanks which I operate .upon are comparatively thin and heated and their central positions'are ordinarily not to be tapered,

these must be held irmlyand clamped by said central portion upon the platen in order to prevent the tearing or distortion ofi their centers due to the pulling action of the rolls on the other portion.

Having thus given a general description of my invention. I will now, in order to make e the matter more clear, refer to the two annexed sheets of drawin Figure 1 is a top p an view of my iniproved disk rolling machine with parts broken away to show the gearing for reciprocating the rolls; Figure 2 is .a side elevation of my disk'rolling4 machine, the right hand portion, thereof bein shown in a vertical section taken substantially on the center line of the machine; Figure 3 is a detail view showing the roughing roll, in' dotted lines, superimposed on the finishing roll, in solid lines, to illustrate the relative actionJ of the rolls on the blank as they are causedto traverse the blank from its central portion outwardly; Figure 4 is an end elevation of 'f my disk rolling machine with the reversing clutch mechanism shown in section; Figure 5 is an elevation partly in section of the end opposite that shown in Figure 4; Figure 6 is a longitudinal sectional view showing in detail a part of the driving mechanism for reciprocating the rolls; and Figures 7, 8

and 9 show a blank, a taper disk and a taper diskv with thicker edge, respectively.

Referring now to they characters of refer-- ence on the drawings: The frame 1 of my disk rollin machine is rovided withv guides 2 in whic are slidab y mounted the 'columns 3 on which the r'oll shaft head 35 is `adjustably 4 secured. The lever 8 is fulcrumed at an intermediate point on the shaft 7 which is carried in the bearings 6 Aon the frame 1. kThe innerend 9 of the lever 8 works in a notch 10 in the equalizer bar 11 and the outerend l12 works in the recess 1 3 of the piston14, which reciprocatesin .the cylinders 15 and 16.` The cylinders 15l nections 17 'and 18 respectively. Pins 21 pass through the eyes 20 of theA equalizervbar 11 and engagev the intermediand 16 are pr'ovided with liu-id pressure conate ears-221 of the link 23, which is 'hinged on the' shaft 95. The ends of the shaft 95 are mounted in transverse bars 94, which connect the lower ends of the columns 3 together in pairs. The transverse bars 94 carry shoes 96, upon which the lower ends of the links 23 work as the equalizer bar 11 is reciprocated. Rollers 25 are mounted on shafts 26, .which `are carried in the bearings. inthe intermediate ears 22and the outer ears 24=of the links 23. The rollers 25 ride on the contact shoes 27, which are secured' A11-annular bevel so as to. rotate therewith, is the platen 33 which is shown with a concave upper face 34 adapted-to conform with one shape 'of disk that I desire to roll.

l do not confine myself, however, to the particularform. of platen shown, as it is manifestly evident that other forms may be used as previously mentioned herein `without deviating from the intent or purpose of this specification. l

The ro'll shaft head 35 has'k the transverse central rib 38, which is tovided with the boss 37 below the centra socket' 36.-r The .roll"shaft, which comprises two portions 41 and 42 having substantially aligned axes.

is journaled at the ends in the bearings 43 and at the middle in the bearing 40, which is provided with the bearing cap 3?. Each portion 4l'and 42, ofthe roll sha'fft has a groove 44, in which is mounted a threaded shaft 46. The'threaded shafts 46 fitinto and engage the nuts 45, which are slidably mounted in the grooves 44 and are provided with projections 47. The projections 47 slidably engage thegannular grooves 48 between the bearing rings" 49 and thebushings 5() and 51, which are mounted in the rolls 52 and 53. vThe roll 52 shows one form of my rou hing rolll and the rolll 53 one form of m'y nishing roll, but these forms. may be varied as desired. -f

yThe outer ends of the roll vshafts are provided `with bearings 54 'in which the threaded shafts 46 are journaled.-4 The bevel gears s 5 5 ,which are mounted on the outer ends of the threaded shafts 46 mesh with'the pinions 56 `on the outer, endsvqf the intermediate shafts 57. The inner ends of vthe shafts 57 have mounted thereon'bevel gears 58 which .i mesh with the' bevel gears 59. The gears 59 are rotatably mo nted on. the drive shaft A60'and`each is provi ed with a female clutch element 104 adapte to-"frictionally -engage the male clutch elements 63 and 64, which are mounted on and rotate with the-drive shaft v66. The upper male clutch element 63 is splined on thedrive shaft 60 and provided with an automatic disengaging device which operates when the rolls 52 and 53 reach the innerdimit of travel. The drive shaft 60 is journaled in bearings 65 vand 6 6 and has at its lower end the bevel gear 61 which meshes with the bevel gear -"62 on, the main drive shaft 28.

The automatic disengaging `means comprises a sheave 67 resiliently secured to the male clutch member 63 and the rock shaft 73 journaled in the bearings 71 and 72. Se-

`rock shaft 73, which raises the male clutch member 63, thereby preventing further rotation of the threaded shafts 46.

In order that the rolls may be adjusted for different thicknesses of disks, the roll shaft head is provided with a' screw adjustment whereby it may be raised or low-v ered to the required amount on the columns 3. Worm wheels 76, which engage the upper threaded portions 77 of the columns 3, are rotatably mounted in the enlarged portions 78 of the roll shaft head 35. Worms 79 mounted on the shaft 80 engage the worm wheels 76 and the shaft 80 is journaled in the bearings 81 and provided on its outer end with the hand wheel82. f

The roll shaft head 35 4is provided with an upper fluid cooled rotatable clamping head 83, the lower end of which has the socket 84 that fits over the projecting center 88 of the -lower clamping head 87. Cooling fluid is supplied to the upper clamping head 83 through the lpipe 85, and may be dis-- charged through a suitable outlet pipe connected to4 a tank or wasted as preferred.

Mounted in the central opening 89.0f the platen 33 is thelo'wer fluid cooled rotatable clamping head 87, which is provided with the projecting centerA .88. The clamping head 87 is arranged to rotate with the platen 33 when in the depressed position and to remain at rest when in the raised position, even though the platen 33 is rotating. The parts l'co-operating with the yclamping heads 87 are mounted within the interior of the central cylindrical portion'4 of the frame 1. The clamping head 87 is mounted upon the flanged barrel 90 and a volute spring 91 surclamping head 87 isin the depressed posi- .tion it engages a shoulder within the central, l

opening 89 of the platen 33 and the barrel 90 is supported on the ball bearing 107 and the clamping head 87 rotates with the platen 33. Cooling fluid is supplied to the clamping. head 87 through the pipe 93 and discharged therefrom by another pipe or duct not shown.

vThe counterweights 97 for the roll aft head A35 are secured to the shafts 98 which i are journaled in the roller bearing 99 on the guides 2 ofthe frame 1. The arms which carry the counterweights 97 areA each provided with a hook-shaped inner end 100 and the side plates 101 rest therein and engage the sockets 102 in the roll shaft head 35. The curled periphery of the blank is 108.

As illustrated in Figure 7, 86 is the yfiat circular blank lwhich rests upon the flat platenl109. l As illustrated in Figure 8, the platen 33 is,\tapered or dished to produce the tapered disk 103.

As illustratedV in Figure 9, the platen is provided with a dish or'taper in its central portion and with an annular groove 'in 1- its outer portion connecting with the same in order to produce a tapered disk with an enlarged rim portion as illustrated.

Assuming the parts of my disk rolling machine t be in theposition as shown on the drawings, the operation is as follows: A suitable blank 86, see Figure 2, preferably heated and having a central hole therein is placed on the lower clamping head 87,

which is in the raised position shown, the

blank being centered by the hole therein and the central stud on the clamp which stud projects. within said hole. Power is sup- .plied to the main drive shaft 28, thereby 'rotating the platen 33 and the drive shaft 60. The blank 86 will not rotate yet because of the braking action exerted by the friction disks 105, which are held in close Contact by the compression in the volute spring 91 as heretofore explained.

Fluid ressure is now admitted lto cylinder 15 tiirough the fluid pressure connection 17, thus advancing the piston 14 and moving the outer end 12 of the lever 8 to the right','whereupon the-inner end 9 of the lever 8 moves to the left, shifting the equalizer` bar 11 in the same direction. The rollers 25 then ride on the contact shoes 27, thus drawing the columns 3, which support the roll shaft head 35, downwardly in the guides 2 againstv the action of the oounterweights 97.V Assuming the adjustment of the roll shaft'head 35 tocbe correct for the thickness of the blank used, the rolls 52 and 53 and the upper clamping head -83 will Contact with .the blank 86. If the contact. is not that desired the \hand wheel 82 may 'be turned in the required direction, thus movcolumns 3 to correspond with the thickness of theA lblank 86. Having the adjustment correctly made, however, the b lank 86 will be firmly held between the upper and lower clamping heads 83 and 87 and the latter will be depressed into the rotating position.

As the roll shaft head is lowered the,

female clutch lement 104 on the lower gear 59 will engage the male clutch element 64, thus rotating the threaded shafts. 46 and traversing the rolls 52 and 53 outwardly from the center of the blank 86. The rolls 52 and 53 being in frictional engagement.

as shown at 108 in Fig. 3, thus conserving the heat thereof.

Fluid yunder pressure is now admitted to the cylinder 16 through the fluid pressure connection 18, thus advancing piston 14 and the outer end 12 of the lever 8 to the left, whereupon the inner end 9 of the lever 8 moves to the right, shifting the equalizer bar 11 in the same direction. The rollers 25 then ride off the contact shoes 27 and the counterweights97 raise the roll shaft head 35 to its upper position. The lower male clutch element 64 is thus disengaged and the female clutch velement 104 on the upper gear 59 will vengage the upper spring pressed male clutch element 63, whereupon the rolls 52 and 53 will be advanced towards each other by the Arotation of the threaded shafts 46.

As the rolls 52 and 53 advance towards the rotation axis of the platen 33, the roll 53 contacts with the lower end of the tripv lever 7.5, thus turning the rock shaft 73 and raising the male clutch element 63,

thereby preventing further rotation of the 5 threaded shafts 46 and automatically stop-4 ping the rolls 52 and 53 at their inner limit of travel. j

In ,the meantime the upper clamping head 83traveling up with the roll shaft`head 35 releasesthe disk 103 and the lower clamping head 87 is raised clear ofthe rotating positionl by the volute spring 91. TheL disk is then removed and thermachine is ready for the insertion of another blank and the operation continues as before.l

In connection with the Voperation, .the manner in which the roll vshaft is mounted should be' noted." Byremoving the-outer bearing cap 43,*,thef central bearing cap 39, 5

and the i housing caps overl the gears 55 placed if necessary..

nnection ,therewith re"-v In working vwith heated blanks which are comparatively thin and therefore subject to rapid cooling it is necessary that the rolling action-be very fast, otherwise the blank will vhave to be reheated and rerolled one or more times in order to produce the required shape of the disk, thereby greatly addingto the 'cost of the finished disk.

My disk rolling machine isparticularly designed to accomplish the rolling operation with one heating of certain types of blanks and without undue distortion'of the grain of the metal. For other blanks vand thinner disks I may reheat and reroll if desired.

To accomplish the purpose desired I place the roll axes in alignment and on opposite sides of the rotation axis of the disk, so that the rolls will tend to knead the material toward the periphery of the blank, so as to` increase the diameter thereof tothe required degree, as is necessary when a rolled disk of tapered or" reduced form is desired. Y Y i Furthermore, byusing rolls having relatively short faces in Contact with the\ blank the action of the rolls' is practically ya pure rolling action without\any slip to produce radially curved distortion of the metal and thereby weaken the disk. .The rolls and the blank travel at the same velocity and as the pressure is limited to such a short eleproduce disks rapidlyv as the different elements are co-ordinated to act with minimum physical and mental effort on the part o1 the operator. The platen and other moving parts do not have to be stopped toremovetheirolledv disks or to insert the blanks and the automatic stop for limiting the: inner,

travel ofthe rolls'prevents any damage tov the machine through carelessness or oversight in'operation.

Although I have described and illustrated my invention inv considerable detail, Ido lnot wish to be limited to the exact and specific details thereof, as shown and described, but may use such modifications in, substitution for, or equivalents thereof, as are emclampin head slightly .elevated aboye a ro tating p aten but not rotating with-the lat en, lowering roll 'and another clamping Vead into contactwith the central portion of the blank, thereby ,clamping the blank onto the thereby expanding and shaping the blank engagement with the blank.

' as desired.

2.. rlhe method of rolling a disk which consists of placing 'a heated blank on a clamping head' slightly elevated above -a rotatlng platen, but not rotating with, the platen, bringing roll and another clamping head into contact with the central portion of the blank, thereby clamping the blank to the rotating platen, and traversing the blank with the rolls* outwardly from the center thereby expanding and shaping the blank as desired.

3. rllhe method of rolling a disk which consists in placing a blank on a ,clampinghead slightly elevated above a rotating platen, but not rotating with the platen, bringing a roll and anotherclamping head into contact with the central portion of the blank, thereby lowering the first-named. clamping' head and causing it to rotate with.

the rotating table and securing the blank against rotation on the platen, and travers-y ing the blank with the roll outwardly to work it.

4. A disk rolling machine comprising a rotatable blank supportingplaten', and an axially reciprocable roll having afrelative movement of approach and separation,

-means for reciprocating said roll, means for causing said relative movement of approach and separation, and a pair of clamping heads adapted to hold a blank on .the platen while they roll traverses the blank.

5. A disk rolling machine comprising a rotatable blank supporting 1platen and an axially reciprocable roll having a relative movement of approach and separation, means for reciprocating the roll, means for causing said relative movement of approach and separation,` and a pair of clamping heads adapted to -hold a blank on the laten as the blank is traversed by the ro one of said heads being normally raised slight ly above the surface of the lplaten and non- 'rotatable' with the platen, to receive the blank initially, and means whereby saidl clamping lad is caused to rotate and lowered to allow the blank to rest upon the surface of the platen when the opposed clamping head "is brought into -operative 4.6. A disk rolling mill comprising a rotatable blank supporting platen and a cooperating roll having a relative movement of ,approach and separation, said roll being axially traversable to wrok the blank, and a pair of clamping headsrotatable, when clamping the blank in position, Iwith the platen and adapted nto hold a blank on lthe platen while the blank is traversed by the IOllS. i fi 7. A disk rolling machine comprising a rotatable-blank supporting latenA and a cooperating roll having a re ative movement of approach and separation, said roll being axially traversable to 'work the blank and.

a fluid cooledclamping head adapted to hold a blank on said platen while the blank is traversed by the roll.

8. A disk rolling machine comprising a rotatable blank supporting platen and a' cooperating roll having a relative Tnovement of approach and separation, said roll being axially traversable across the blank,

and a pair of fluid cooled rotatable clamping heads to hold a blank o n the platen while the blank is traversed work it. Y

9. A disk rolling machinecomprising a rotatable `blank supporting platen and acooperating-roll carrying head having relative movement of approach and separation,

a rollen said head axially traversable crossby the roll to i wise of the blank, a clamping head on the roll head, and another clamping head on the'platen for clamping a blank to the platen upon relative approaching movement of the roll head and platen to cause the roll to operatively engage the blank.

l0. A disk rolling machine comprising a` rotatable blank supporting platen and a cooperating roll carrying head having a rela tive movement of approach and separation, a roll on said head axially traversable crosswise of the blankto roll the same, rotatable a clamping heads for holding a blank-on said platen while traversed by the roll, one of said clamping heads being carried by the roll head and the other b the laten, and

at least one of said heads eing uid cooled.

of the platen while being acted on by the roll.

1Q. Inl a machine of the class described, the combination of a Supportfor the blank to be rolled and a cooperating roll bodily rotatable relative to one 'another and movable toward and awayfrom one another for rolling and to permit removal of the rolled blank, means for shifting the roll crosswise of the support to roll a blank thereon, and means controlled lby separation' of the support and the roll `forreturning-the roll to initial position.

13. A machine of the vclass, described comprising a rotating vsupport for the blank, a

roll cooperating with said support, means for relatively moving said roll toward the support to apply it to the blank under pressure, and for relatively moving the roll away from the support, means for moving the roll radially of the blank, and means for automatically returningfsaid roll to the central portion of the blank when the roll reachesa predetermined yp'osition in its movement away from the support.

14. A machine ofthe character described comprising an axial support for a blank, rolling means for the blank, means to relatively traverse the rolling means radially outward and inward as respects lthe axis, means to relatively move the rolling means to approach it toward and to separate it ,from the support, and automatic actuating devices for said traversing and .l approach and separation means cyclically relating the movements of the traverse and the approach and separation means.

15. In a machine of the class. described, the combination of a support for the blank vto be rolled and a cooperating roll bodily rotatable relative to one another, approach and separation mechanism between the roll and the sup ort to move them toward and from each ot er to permit insertion and removal of blanks, traversing and retraversing mechanism to shift the roll crosswise of the support to roll a blank thereon and' return the roll to starting position, and interlocking means between said mechanisms whereby operation of one of them brings about 4operation of the other. N f' 16. In a machine of the character described, the combination of a support for the blank to be rolled, and a cooperating roll bodily rotatable relative to one another, a power-driven approach and separating mechanism to move the roll and the support toward and from each other, a power-driven traversing mechanismfor the roll to shift it -crosswise of the support to roll a blank thereon, interlocking means between said mechanisms whereby operation of one of thembrings about operation of the other to carry the operations ofthe machine through a cycle, manual means to institute the cycle said support and roll toapproach each other to bring the roll into contact withthe blank,

means for relatively moving said roll and said support to cause the roll to traverse the' means for relatively moving the roll and support to cause the roll to traverse the blank radially, means to cause the separation of the roll and support, and means for causing the retraverse of the roll to the starting point, and means interlcking the means for causing the approach and separation and the vmeans for causing the traverse and retraverse.

20. An apparatus for rolling disks comprising means for supporting a circular blank, a cooperating roll engaging the blank, traversing mechanism for progressively shifting said roll radially outward from the axis of the blank to gradually spin the metal of the same outward and reduce its thickness, approach and separation mechanism for moving the supporting means and roll relatively toward and'froin each other -to permit-insertion and removal of blanks and to apply rolling pressure, and independent means for adjusting said supporting means and roll relatively to each other to 7vary the thickness of the disc.'

21. A machine of the class described comprising a substantially horizontal support for a blank' to be rolled and a roll carrying head relatively movable toward and from each other to permit the insertion and removal of blanks, columns interconnecting said support and roll head, means for 'effecting said* relative movement of said blank support and roll carrying head, and means for effecting an independent adjustment of oner of said relatively movable members along said columns to 'vary the thickness fof the blanks. v v

22. A machine of the class described comprising a support'for a blank and a roll head arranged in vertical relation and relatively movable toward land from each other to permitl the insertion and removal of blanks, columns interconnecting said support and roll head, and means for elfecting an independent adjustment ofthe distance ica between/ said support and roll head by I movement of one of said members along said columns, said means comprising screwt-hreads on said columns, and nuts cooperating with said screw-threads.

23. A machine of 'the 'classl described comprising a support -for a blank and roll head arranged in vertical relation and relatively movable toward and from each other to permit insertion and removal of-blanks,

columns interconnecting ksaid support and roll head, and means for effecting an independent adjustment of the distance between said support and roll head comprising ad'- justable connections between one of said relatively movable members (support and land support comprising screw threads on said columns, nuts cooperating with said screw threads, and mechanism `for simultaneously rotating said-nuts. N

25. A machine of the character described comprising a horizontal platen to support the blank, an overhead roll support freciprocable toward and from said platen, and rolls carried by said support on opposite sides of the platen axis and traversable laterally of said axis over the iace of the platen.

26. A machine of the character described comprising a horizontally-disposed rotatable platen to support the blank tobe operated upon, an overhead roll support movable toward and from the platen, traversing rolls carried by said head and .traversable thereon radially over the-face of the platen, and roll traversing mechanism carried by the roll support.

27. A machine of the class described comprising a frame, a rotatably mounted table adapted to support a blank to be rolled, and a roll carriage having arelative movement of approach and separation, and means for causing the relative movement of approach and separation of said table and carriage comprising a toggle-like connection between said frame and one of said relatively movable members.

28. A machine of the clas`s described comprising a frame, a rotatable support for a blank to be' rolled and a roll carriage having a relative movement; of approach and separation, a roll lon said ycarriage and adapted to operate upon a blank on said support, and means for causing the relative movement of approachl and separation of said support and carriage comprising a toggle-like connection between said frame and vone of said relatively movable members locking said relatively movable members in their position of approach while the blank is being operated upon by the roll. 29.y A machine of thecharacter describe comprising a rotating support for a blank Y taneously.

ity of toggle like. devices arranged symmetrically about the axis of the machine and means Jfor operating said devices simulv30. A machine ofthe 'character described comprising a rotating support for a blank to be rolled and a roll'carriage yhaving a relative movement of approach and separation, a traversable roll on said carriage and adapted to operate upon a\ blank while being traversed radially thereof, and means for effecting said relative movement of ap` proach and separation comprising -a plurality of parallel shafts carrying'toggle links, and-means connecting said shafts whereby' they are constrained to operate in unison.

' 31. A machine of the character described comprising a rotatable platen and a roll carrying head having a relative movement toward and from each other and interconnected through slidable columns serving fto c guide said relatively movable ,parts in their movements toward and from each other,`

means interconnecting the ends of the columns, and approach and 4separation mech'- anism between the interconnecting means and one of the relatively movable elements;

32. A machine of the class described comprising a frame, a rotating support for a lank tobe rolled and a roll carriage having a relative movement of approach and separation, a roll on said carriage for cooperation with the blank, columns connectingsaid roll carriage and frame and anking said rotating support and serving as 'guides for ics A said' relatively movable parts in their approach and separation movements, said columns extending rom the base kof the frame tothe extreme top of the machine and being llt) in tension during the rolling operation -1 throughout substantially their entire lengths.

33. A machine of the class described comprising a rotatable support for a blank to -be rolled, and a carriage vertically movable relative to said support, a traversable roll carried bythe carriage and adapted to operate upon a blank on said support while traversing radiallyofthe blank, means for relatively moving the blank support and roll l jacent ends supported by relatively thin supface.

ports to permit the rolls to closely approach the center of the blank.

85. A machine of the class described comprisingca rotating blank\support, and a roll adapted to traverse the blank radially az fixed roll shaft for rotatably supporting the roll, and means ,for moving said roll `along the fixed roll shaft. v

36. A machine of the, class described comprising a traversing roll, a lixed roll shaft for rotatably supporting said roll,` and means comprising a thrust screws7 and a nut cooperatingwith said screw for moving said roll along the fixed. roll shaft.

37. A machine of the class described comprising a rotating blanksupport, a pair or' traversing rolls adapted to be simultaneously movedradially of the blank to roll the same, one of said rolls being a roughing roll and the other a finishing roll. i

38. A machine of the class described comprising a rotatable blank support a pair of traversing rolls adapted to be simultaneously moved radially of 'the blank to roll the same, one of said rolls being a roughing roll and having an arcuate Working face and the other of said rolls being a finishing roll and havin a narrow substantially cylindrical wor ing face and curved leading in signature.

39. A machine of the class described comprising a rotating blank support, a roll .adapted to be traversed radially of a blank on said support to vroll the same, and mechanism for rotating said support and for traversing said roll deriving its power from a common prime mover.

4:0. In a machine of the class described', a blank support having a shallow recess in its surface gradually. decreasing in depth `from adjacent the center thereof toward the periphery and having a peripheral portion of greater depth than the portion adjacent thereto, together with means for rolling a blank into said recess to give it a varying cross sectional contour corresponding to the varying depths of said recess.

41. In a machine of the class described, a blank support having a 'shallow recess in its surface gradually decreasing in depth from adjacent the center thereof toward the periphery and having a peripheral portion ofl substantially uniform depth greater than the depth of the portion adjacent thereto, together with means for rolling a blank into said recess to give it a varying cross sectional contour corresponding to the varying depths of said recess. l

In witness whereof I .hereunto ailix my HARRY R. enna.

Images