US1381509A

US1381509A - Bolt-heading machine

Info

Publication number: US1381509A
Application number: US317268A
Authority: US
Inventors: Fredrick J Schwimmer
Original assignee: HOWARD IRON WORKS
Current assignee: HOWARD IRON WORKS
Priority date: 1919-08-13
Filing date: 1919-08-13
Publication date: 1921-06-14
Anticipated expiration: 1938-06-14

Description

F. J. SCHWlMMER.

BOLT HEADING MACHINE. APPLICATION FILED AUG-13,1919

Patented June 14, 1921.

4 SHEETS-SHEET 1.

F. J. SCHWIMMEH.

BOLT HEADING MACHINE.

APPLICATION FILED AUG. 13. 1919.

Patented J une 14, 1921.

4 SHEETS-SHEET 2.

[/V VEA f 17/3 F. J. SCHWIMMER. BOLT HEADINGMACHINE.

APPLICATlON FILED AUG, 12. 1919 P11111161 June 14, 1921.

Manual v 7W 4 SHEETS'-SHEET 3- WVEA/Tm QMU w F. J. SCHWIMMER.

BOLT HEADING'MACHINE.

APFUCATKON FILED AUG-13, 191 9.

Pzfiented June 14, 1921.

4 SHEETS-SHEET 4- UNITED STATES PATENT OFFICE.

FREDRIOK J. SCHWIMMER, OF TOLEDO, OHIO, ASSIGNOR TO HOWARD IRON WORKS, OF BUFFALO, NEW YORK, A CORPORATION OF NEVT YORK.

BOLT-HEAIJING MACHINE.

Specification of Letters Patent. Patented June 14, 1921,

Application filed August 13, 1919. Serial No. 317,268.

To all whom it may concern:

Be it known that I, FnnnRIcK J. SoHwIM- man, a citizen of the United States, and a resident of Toledo, in the county of Lucas and State of Ohio, have invented a new and useful Bolt-Heading. Machine; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specification.

This invention relates more particularly to bolt making machines, but is not restricted to such use, and has for its primary object the provision of a simple, efiicient and improved machine of this class which is adapted to successively feed predetermined lengths of stock to the working parts of the machine, grip and upset a part thereof to form a head and to then sever the headed portion fromthe stock and discharge it from the opis capable of being easily and quickly converted into a machine of the stamping press type.

The invention is fully described in the following specification, and while, in its broader aspect, it is capable of embodiment in numerous forms, a preferred embodiment thereof is illustrated in the accompanying drawings, in which,

Figure 1 is a top plan view of a machine embodying the invention, with parts broken away and with the upsetting plunger and work gripping jaws in retracted positions. Fig. 2 is a side elevation of the machine. Fig. 3 is fragmentary plan view of the work gripping,shearing and upsetting mechanisms in the positions which they assume when the plunger is at the forward end of its stroke. 3 is a detail of the rear or work upsetting side of the work gripping jaws in gripping position. Fig. 4 is a sectional detail taken approximately on the line 4, ft in Fig. 1, with parts removed. 5 isa fragmentary detail of the upsetting pl ger its toggle mo nting the released, broken or inoperative position which it assumes after the upsetting operation. Fig. 6 is a fragmentary detailed elevation of the operating means for the work feeding mechanism. Fig. 7 is an enlarged top plan view of a portion thereof with a part broken away. Figs. 8 and 9 are different details of the brake wheel with the latter in section in Fig. 9. Fig. 10 is a section on the line 10-10 in Fig. 1. Fig. 11 is a plan view of the machine, with the automatic work feeding, clamping, upsetting and severing mechanisms removed and a simple work stamping means substituted therefor, and Fig. 12 is a fragmentary side elevation thereof.

Referring to the drawings, 1 designates the machine frame, transversely in the rear end portion of which, in bearings 2, is journaled a crank-shaft 3, the crank 4 of which operates in an opening 5 in the frame between said bearings. The shaft 3 at one end carries a loose gear 6 having the inner end of its hub provided with a clutch surface with which a clutch collar 7 that is feathered on the shaft may be engaged. The clutch collar 7, in the present instance, is normally urged to engage the gear clutch by springs 8, and is moved to and held in released position by the engagement wi h a peripheral cam groove therein of a roller 9, which is carried at one end of a bell. crank lever 10. This lever is fulcrumed to the frame at 11 and is provided with a weighted arm 12. whichacts to normally retain the roller 9 in collar engaging position. The lever 10 is connected by rod 13 to an arm 14 n a rock shaft 15, which is ournaled in the lower forward end portion of the frame 1 transversely thereof. A foot treadle 16 projects forward from the shaft 15. It is thus evident that a depression of the treadle 16 will impart a clutch collar releasing movement to the lever 10.

The gear 6 meshes with a driving pinion 17 on a drive shaft 18, which is journaled in the frame 1 transversely thereof adjacent to its rear end and carries at its opposite end a pulley 19, which may be belted to any suitable source of power. In order to enable the crank shaft to be driven at a greater speed. a pulley 20 is bolted or otherwise is carried by this bolt and coacts therewith to normally hold the sections in clamping engagement with the wheel. A spreadercam 26 is mounted between the free end portions of the brake band, and when moved in one direction is adapted to effect an expansion of the band against the tension of the spring 25 to release the brake wheel. An arm 27 projects downward from the expanding cam 26 and is connected by a rod 28 'to an upstandingarm 29 on the adjacent end of the shaft 15, whereby a depression of the treadle 16 will effect a rocking of the cam 26 in a direction to expand the brake band and release the wheel 21.

A connecting rod or pitman 30 connects the crank 4 of the shaft 3 with a plunger or cross-head 31, which is mounted over the frame opening 5 in guides 32 atthe sides thereof for reciprocatory movements longitudinally of the frame. This plunger isprovided at'its forward end with oppositely extending arms or.

lateral extensions

33, 33 and is provided centrally at the upper side of its forward endwith an opening or recess 34. A" rocker-arm 35 is carried at its rear end for vertical swinging movements within the recess 34 by a shaft 36, which is mounted transversely in the plunger 31 (Figs. 4 and 5). A die carrying head 37 has its rear end forked and straddling the rocker-arm 35 and pivoted to said arm intermediate its ends, at 38, so that the arm and die carrying head are adapted to .have a. toggle action. The forward end portion of the arm 35 is vertically broadened and provided in advance of the pivot 38 with a transversely extending segmental slot 39 through which a pin 40, connecting the arms of the head fork, loosely extends and coacts with the end walls of said slot to limit the relative swinging or breaking movements of the members 35 and 37. When these members are in operative work upsetting position, as shown in Fig. 4, the shaft 36 and pins 38 and 40 are disposed in the plane of thrust of the cross-head, with the

pivots

38 and 40 both serving to resist the forward thrust of the arm 35 against the die carrying head during a work upsetting action, as is apparent.

When the members 35 and 37 are in this position they rest on the bottom of the socket 34 to maintain the die carrying head in proper alinement with the work. The head 37 is socketed at its forward end to receive an upsetting tool 41 of any suitable size for the Work to be performed. 7

The shaft 36 which carries the rocker-arm 35 is provided at each side of said arm with an upwardly and forwardly projecting rocker-arm 42,which carries an anti-friction roller 43 at one side of its free end. This roller engages within a slot 44 provided longitudinally in the rearwardly projecting arm 45 of a bell-crank lever, which lever is pivoted to the frame at 46, and has its other arm 47 upstanding and connected by a rearwardly extending rod 48 to the upper end of a lever 49. This lever is carried by a shaft- 50, which is journaled at its ends in bearings 51 provided atthe rear end ofthe frame at opposite sides ofthe opening 5 therein, and thelever is provided at its lower end with a roller 52 for engagement with a cam 53 on the crank shaft 3 at a predetermined point in each revolution thereof, so that a rocking movement is periodically imparted to the lever. It is evident that as the roller 52 is engaged and forced outward by J the cam 53 the bell-crank lever 45-47 is rocked in a direction to raise the rockerarm 42, which in turn, through the shaft 36,

effects an upward rocking of the toggle link 35 to crook or break the-toggle connection with the plunger37 and raise said plunger above the path of movement of the stock, as illustrated in Fig. 5. The cams 53, which are two in number, are mounted on the crank shaft 3 at opposite sides of its crank and, in the present instance, comprise blocks which are slipped over a squared or flattened portion of the shaft, as shown in Fig. 4. 1

The. frame 1 is provided in its top near its forward end or in advance of the plunger 37 with a transverse recess 54 (Fig. 12) in which is mounted a removable block 55. This block has its top provided with the reccsses 56 for receiving the operating parts and it is provided at its 'rear side, in register with the die-carrying head 37, with an open ing 57. The stock is intendedto feed horizontally rearwardly of the machine in longgitudinal register with'the head 37, when in operative position, and'over or through the upper portion of the block opening 57, as illustrated in Fig. 1. A pair of

work clamping jaws

58, 58 are mounted in the 7 at a point a predetermined distancetothe rear of the jaws 58, as best shown in Fig. 1. The shear-'die62 which laps theother shear-die'fat the side thereof adjacent to the clamping jaws 58, is preferably recessed at its end to partially fit aroundor receive a side of the stock a, and the other sheardie has the greater movement across the opening 57 to adapt it to have a shearing movement entirely across the stock. The shearing of the stock takes place-a sufiicient distance to the rear. of the clamping jaws 58' to provide suflicient material for upsetting within the enlargedhead-forming end of the recess 59 of the clamping jawsto form a head on the stock end. i

A connecting rod 63 projects forwardv from each extension'pr side arm 33 of the plunger 31 for horlzontal pivotal movements relative thereto and has its forward end extended through a registering opening 64: in a rear side of the block 55 and into the recess 56 thereof. Each rod 63 pivotally carries a triangular rockermember 65 at the inner side of its inner end, which member is pivotally connected at one corner by a link 66 to the outer end of the adjacent shear block 61 and is pivotally connected-at its other corner by a link 67 to the outer end of the. adjacent slide block or-j aw 58. The connection between the rods 63 and the slide blocks 58 and 61 is such thatwhen the rods are at the limit of their rearward movement the shear-blocks 61 will have-been advanced to shearing position and the clampingblocks 58 will have been retracted to full open position, as shown in Fig. 1, and that when said rods are advanced the rocking action which is imparted to the respectivemembers 65 will cause a retracting of the shear blocks 61 toopen position, and a movement of the clamping blocks 58 to work clamping position, substantially as shown in Fig. 3. 7

Each rod 63 is provided at its forward end on the pivot which carries the rocker member 65 with a roller 68, Which bears outward against a respective thrust resisting memberv 69, which is disposed longitudinally of the machine frame in the adjacent endof the recess 56 and is pivoted for limited horizontal rocking movements about a pivot 70. A rod 71'is fixed'to and projects fromv the forward end of 'eachrocker member69 through a registering openingvin the end wall of the recess 56, and a coiled compression spring 72 encircles this rod between the end of the block and a nut, shoul der or head on the outer end of the rod and acts in conjunction with the rod to urge an outward movement of the connected end of the member 69. A catch member 73 is pivoted within the recess 56 at thelforward end of each rocker member 69 and is adapted to have catch engagement with the for- .Ward or adjacent end of the rocker member to hold it at an inward position of its movement against the tension of the spring 72, as shown in Fig. 1. The catch member 73 has a finger portion projecting in the path of movement of the roller 68 so that when the rod 63 is substantially at the limit of its forward movement, the roller will engage the catch member and during the remainder of its forward movement will move the catch member therewith against the tension of a spring 74 to release it from catch engagement withthe coacting rocker member 69. Upon such release the forward end of the rocker member 69 will swing outward both under the action of the spring 72 and the outward pressure of the roller 68 so that the clamping blocks 58, which Were in clamping engagement with the Work, will be permitted to move outward slightly .to release the Work, as shown in Fig. 3. When the rollers 68 have been returned substantially to the limit of their rearward strokes, they will be acting against the respective rocker members 69 at the rear of their pivots and will impart a rocking to the member 69 against the tension of the springs 72 sufiicient to permit a reengagement of the catch and rocker members. When the rollers 68 are bearing against the rear ends of the rocker member 69, a considerable outward pressure will be exerted thereby against said members due to the resistance which the stock offers to the initial movements of the shear blocks 61 during the shearing action.

The stock feeding mechanism is carried by a frame part 75 projecting from the for- Ward end of the frame 1, and, in the present instance, includes the two pairs of upper and lower peripherally grooved feed Wheels 76 between which the stock feeds into the machine. The feeding mechanism is provided with a main drive shaft 77 journaled transversely in the lower portion of the frame 75, and this shaft carries one of a train-of gears 78, which communicate predetermined stock feeding movements to the feed wheels 76. As feeding mechanisms of this class-are well understood in the art and nothing new is claimed for the one illustrated, it will not be specifically described.

A ratchet means'79, preferably but not necessarily of the ball clutch type, is mounted on the shaft 77 and has its pawl or actuating member connected by a rod 80 to an arm 81 carried. by a rocker shaft 82 that is journaled, in the present instance, in suit- This lever is pivotally carried by a block '87 whichis mounted for horizontal adjust ment'in a slot 88 provided in a bearing'arm 89 projecting from the rear end portion of the'frame 1 at the side thereof adjacent to the'brake-wheel 21, with the slot 88 thereof disposed at the outer side of the wheel in spaced relation thereto.' 7 The block is clamped in adjusted position to the bearing arm 89 and has a swivel rod 90 projecting forward therefrom through an end wall of said slot in which it is threaded. It is thus evident that an oscillatory movement will be imparted to the clutch or ratchet means 79 from a rocking of the lever 85-86 to impart intermittent rotation in one direction to the shaft 77 and a consequent driving of the feed rolls to advance a predetermined length of stock.

The brake-wheel 21 is provided on its outer side with a transverse enlargement 91 having a T-slot 92 therein radially of the wheel for receiving the headed end of' a wrist-pin 93 for longitudinal adjustment therein. An adjusting screw94 is threaded through an outer end closing member or part of the slot 92 and is swiveled tothe wrist-pin 93 to adapt a turning of the screw to effect an adjustment of the pin within the slot. A wrist-pin block 95 is pivotally mounted on the wrist-pin 93 and projects into a groove or race-way 96 provided longitudinally in the adjacent side of thelever arm 86, whereby the block 95, when revolved about the axis of the shaft 3, will be caused to have reciprocatory movements in the race-way 96and impart a predetermined rocking movement to the lever 85-86, the extent of which movement is regulated by an adjustment of the wrist-pin radially of its axis of revolution. It is thus evident that at each revolution of the crankshaft 3 the lever 8586 has a rocking movement of predetermined throw imparted thereto by the wrist-pin block 95, and such rockingmovement is communicated through the rod'34c, bell-cranklever 81, 82, 83, and rod 80 to the actuating member of the ratchet means 79 so as to impart a predeterminedfstock feeding movement to the feeding mechanism. It'is also evidentthat in additionto the wrist pin block 95 being adjustable radially of its aXis of revolution to vary the throw of the bell-crank lever 85-86,'the fulcrum of this lever is also horizontally adjustable transverse to the crank shaft axis in the bracket slot 88 thereby enabling a' timedjustment of the feed mechanism actuating means to be obtained to regulate the extent of feed of thestock at each feeding operation, 7 Each stock feeding operation is timed to take place during the rearward stroke ofthe cross-head 31 and. is completed by the timetheshear blocks 61, 61' have been moved inward for their dies 62 to have shearing contact with the stock, such shear- .ing action taking place when the'cross head is substantially at the rear. end of its stroke.

The operation of the machine .is as follows :-If the machine is of the manually controlled or semi-automatic type, as illusthe operating treadle 16 the clutch 7 is released by the retracting means and is engaged with'the clutch memberof the con tinuously driven gear or member 6 so as to drive the crankshaft 3. "At the same time the brake-band 22 on the brake-wheel 21 of the shaft is released from holding engagement therewith by a movement of the expanding-member 26, which is connected to the treadle 16; It will be understood that so long as the treadle' 16 is held depressed the. machine will "continueito operate and that upon a release of the treadle the clutch member 7 will, at substantially an end of a cycle of operation,'b e retracted from its companion to disengage the driving connec-' tion between the drive member 6 and crank shaft, and the brake-band 22 will be'permitted to move into clamping engagement with the'brake-wheel 21 to stop the rotation of the crank shaft with the cross-head 31 at approximately the limit of its rearward stroke During a forward stroke of the cross-head 31 the

rockermembers

65, 65 are operated to force the

clampingjaws

58, 58

'into clamping engagement with the stock bar a ata predetermined distance forward from its previously severed end and to retract the "shear blocks 61, '61'and their dies from stock severing position and out of the path of movement of the upsetting die 41 carried by the plunger 37. 'The upsetting die 41 in its advancing movement engages the end of the stock a which projects rearwardly from the clamping

jaws

58, 58 and causes an upsetting of said end portion of the stock into the head forming cavity at the adjacent side of the saidjaw's so-as to form a head of predetermined shape onthe stock end. As the upsetting die completes its forward stroke'lthe rollers 68 move into tripping engagement with the respective catch members 73, releasing the same from engagement with the rockenmembers 69' to permit limited outward movements of the forward ends of said members and consequent initial outward or stock releasing movements to the clamping jaws 58, as shown in Fig. 3. On a rearward stroke of the plunger or cross-head 31 the wrist-pin block 95 on the brake-wheel 21 acts on the horizontal arm of the lever 85-86 to effect a rocking thereof and to communicate a stock feeding movement to the feeding mechanism to advance a predetermined length of stock into themachine. At approximately the same time, or during the initial portion of the rearward stroke of the cross-head, the cams 53, 53 act on the rollers 52 to impart rocking movements to the levers 49 carrying the same and upward rocking movements to the arms 45 of the bell crank levers 4C547. This movement of the lever arms 15 causes an upward rocking of the engaged

arms

42, 42 and a consequent upward rocking of the rocker-arm 35, which is fixed to the shaft 36 with the arms 42. This movement of the link 35 causes a raising of the pivot 38 between the arm 35 and diecarrying head 37, and also after a predetermined relative rocking or breaking action of the members 35 and 37 causes a bodily raising of the member 37 and its upsetting die 41 above the path of advancing movement of the stock, as shown in Fig. 5. It is evident that during a rearward stroke of the cross-head the rollers 68 are caused to travel rearwardly along the members 69, and the

rocker members

65, 65 are moved to effect a complete retraction of the clamping jaws 58 and to force the shear-blocks 61, 61 inward to cut off the previously headed end portion of the stock, such severing taking place after the completion of the stock feeding movement and just before the cross-head has completed its rearward stroke. As the rollers 68 pass rearwardly beyond the rocking centers of the members 69 they cause a rock ing of said members to return them into position to be engaged and held by the catch fingers 73. The cams 53 are timed to releasethe rollers 52 to permit a return of the arm 35 and member 37 to their normal operative positions, as shown in Fig. 4:, at approximately the time of completion of the rearward stroke of the cross-head but after the severing of the stock, provided the feed of the stock is sufiicient to dispose its forward or headed end below the upsetting die 11 when at the limit of its rearward stroke.

In order to adapt the machine for use as a stamping press, I have removably mounted the block 55 in a recess 54 of the press frame and provide a die-block 100 for mounting in said recess and having a work shaping face of any suitable form. A second die-block 101 for co6perating with the die 100 is attached to the forward end of the cross-head 31 in the place of the engaging rods 63, and

the plunger 37 and its operating means are removed from the cross-head and from the machine frame, as these parts are not needed when the machine is being used as a stamping press. The stock feeding mechanism and its operating or control means may also be removed from the machine.

It is evident that I have provided a simple and eflicient machine for upsetting an end of.

a stock bar to form a head of predetermined shape thereon, advancing the stock a predetermined distance into the machine after each heading operation and then to sever the same, and that the machine may be run continuously as an automatically repeating machine or intermittently at the will of the operator.

I wish it understood that my invention is not limited to any specific construction, arrangement or form of the parts, as it is capable of numerous modifications and changes without departing from the spirit of the invention as defined in the claims.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is,-

1. In a machine of the class described, a set of work clamping members, a set of work shearing members, means operable to impart movements to the members of said sets to cause the clamping members to clamp the stock when the shearing members are in retracted position, and vice versa, and means automatically operable to permit an initial work releasing movement of the clamping members when the operating means is at a predetermined point in its movement.

2. In a machine of the class described, a reciprocatory member, a set of oppositely movable work clamping members, a set of oppositely movable work shearing members, the members of said sets being movable in a plane transverse to the line ofrmovement of the reciprocatory member, elements projecting from the reciprocatory member longitudinally of its movement, a rocker mem-. ber carried by each element, and separate links connecting each rocker member to adjacent members of both said sets to impart reverse movements to the clamping and shearing members when the reciprocatory member is moved.

' 3. In a machine of the class described, a set of oppositely movable work clamping members, a set of oppositely movable shearing members, the members of both of said sets being movable transverse to the work to be acted on, a link projecting from each of said members, a rocker member connecting and being pivoted to the links of adjacent members of said sets, and means operable to rock the rocker members and shift the rocking axes thereof to impart reverse reciprocatory movements to the members of the sets to which connected.

4. In a machine of the class described, a

pair of oppositely movable work clamping members, a pair of oppositely movable work shearing members, the movements of said members being substantially in a common plane transverse to the work operated upon, means operable to impart simultaneous reciprocatory movements to the members of both pair with the movements of the members of one pair reverse to those of the other, and means coacting with said first means to oppose the outward pressure of the clamping and shearing members thereon and operable at a predetermined point in a movement of said first means to permit an outward movement of parts thereof to release the clamp-- ing action of the clamping members on the work.

5. In a machine of the class described, a reciprocatory element, I an arm projecting therefrom in the direction of its movement, a shearing member and a clamping member mounted for reciprocatory movements transverse to the direction of movement of said arm, and means connecting said arm to each of said members and operable to impart reverse reciprocatory movements to the members when the arm is moved in either direction.

6. In a machine of the class described, a reciprocatory element, an arm projecting therefrom in the direction of its movement, a shearing member and a clamping member mounted for reciprocatory movements transverse to the direction of movement of said arm, means connecting said'arm to each of said members and operable to impart reverse reciprocatory movements to the members when the arm is moved in either direction, and means acting against the outer side of said arm relative to said members to 0p pose the outward thrust of the members and connecting means thereagainst.

7. In a machine of the class described, a

plunger, an element pivoted to and projecting from said plunger longitudinally of its movement, a work clamping member and a work shearing member mounted for reciprocatory movements in a plane transverse to the direction of movement of said plunger,

link means connecting said element to each of said members and operable to impart re-' verse movements to the members when the element is reclprocated in either direction,

and means coacting with the element to oppose the outward thrust action of the members thereagainst and automatically operable at a predetermined point in a movement of the element in one direction to permit an initial outward movement of the clamping member.

8. In a machine of the class described, a plunger, an element pivotally projecting from said plunger in the direction of movement thereof, a clamping member and a shearing member mounted for reciprocatory movements transverse to the dlrectlon of.

of the clamping and shearing members thereon, and'means normally holding said block in one position of its movement and automatically operable at a predetermined point in a movement of said element to release the block to permit an outward movement of it and the member connecting end of said element.

9. In a machineof the class described, a

reciprocatory element, means for driving said element, a work shaping die carried by;

said element for movements relative thereto, and means periodically operable to move said die out of work registering position.

10. In a machlne of the class described, a

reciprocatory element, means fordriving' said element, a work shaping die carried by said element for movements relative thereto, and means having arotatable cam and operable to periodically move said die out of work registering position.

11. In a machine of the class described, a plunger, a die carrying member movable with said plunger, and means carrying said member and in part carried by said plunger for movements therewith and operable to move the die transversely of the plunger to place it into and out of work registering position.

12. In a machine of the class described, a plunger, a die carrying member, means car rying said member and in part carried by and movable with said plunger and automatically operable at predetermined points in a movement of the plunger to move the member transversely of the plunger into and out of work registering position.

13. In a machine of the class described, a

plunger, a multiple member die carrying means carried by said plunger and operable to transversely'move the die relative to the.

plunger, an arm carried for transversepivotal movements by said plunger, a die carrying member connected to said arm for limited movements relative thereto and movements therewith to shift the die carrying end of the membertransversely of the plunger,

and means automatically operable during a' predetermined portion of a stroke of the plunger to rock said arm to shift the die carrying member into and out of operative position.

16. In a machine of the class described, a plunger, a pair of pivotally connected die carrying members pivotally carried at one end by said plunger and extending longitudinally therefrom, said members being capable of limited relative toggle movements and of movement together as a unit to transversely shift the die carrying end thereof, and means operable to periodically move said members relative to the plunger.

17. In a machine of the class described, a plunger, a rocker arm pivotally carried by said plunger for rocking movements transverse to the plane of movement of the plunger, a die carrying member pivotally projecting from said rocker arm and adapted to have limited rocking movements relative thereto, and means for periodically imparting rocking movements to said arm.

18. In a machine of the class described, a plunger, die carrying means pivoted to said plunger for transverse rocking movements relative thereto to move a die carried thereby into a'hd out of operative position, and means operable to rock the die carrying means.

19. In a machine of the class described, a plunger, die carrying means carried by said plunger for transverse movements relative thereto to place its die carrying end into and out of operative position, and means automatically operable during predetermined portions of a reciprocatory movement of the plunger to impart transverse movements to the die carrying means relative to the plunger.

20. In a machine of the class described, a plunger, die carrying means carried by the plunger for transverse rocking movements relative thereto, a rocker arm connected to said means, a lever engaging said arm and operable when rocked to impart a rocking movement to the arm and to said means, and means automatically operable at a predetermined point in a movement of the plunger to rock said lever in first one direction and then the other.

21. In a machine of the class described, a plunger, a crank shaft, a plunger connected to and movable by said shaft, die carrying means carried by said plunger for movements transverse thereto to move its die carrying end into and out of operative position, and means having a cam member on said shaft and operable to periodically impart shifting movements to said die carrying means relative to the plunger.

22. In a machine of the class described, a crank shaft, a plunger connected to and reciprocally movable by a rotation of said shaft, a'rock shaft carried by said plunger transversely thereof, two rocker arms projecting from said rock shaft, a die carrying member projecting from one of said arms for limited pivotal movements relative thereto and for predetermined movements therewith, and means having connection. with said other arm and operable by a rotation of the crank shaft to periodically rock said arms to intermittently shift the die carrying member into and out of operative position.

23. In a machine of the class described, a reciprocally movable element, a work shaping die movably carried by said element for movements relative thereto, work clamping means, work shearing means, means connecting said element to both said clamping and shearing means to impart work clamping movements to the clamping means and re tracting movements to the shearing means when the element is moved in one direction, and vice versa when the element is moved in the other direction, and means periodically operable to move said work shaping die out of Work registering position.

24.- In a machine of the class described, a work feeding means, a rotatable element having a revoluble part, a lever having a race-way in one arm thereof in which said revoluble part has reciprocatory movements whereby rocking movements are imparted to the lever from a revolution of the part, and means connecting said lever and feed means to impart feeding movements to the latter during a rocking movement in one direction of the lever.

25. In a machine of th class described, a driven shaft, a work feeding means having a drive shaft, a member revoluble with the driven shaft at an end thereof, a standard bracket having an elongated slot therein transverse to the driven shaft axis, a fulcrum block adjustable longitudinally in the bracket slot, a lever pivotally carried by said block and having a race-way disposed longitudinally in one arm thereof and receiving said revoluble member whereby rocking movements are imparted to the lever from a revolution of the member, and means connecting said lever and the drive shaft of said feed means to cause a rocking of said lever in one direction to impart a feeding movement to said drive shaft.

26. In a machine of the class described, an operating crank shaft, a drive member loose on said shaft, a clutch movable to connect the drive member and shaft, a brake wheel on the shaft, brake means normally coacting with said wheel to frictionally resist a turning thereof, and manually controlled means operable to move the clutch to engage the shaping ca'ctien'wit'h a Work piece, and

shaft and drive member and to actuate said means carried b'yand movable with the 10 brake means to release said Wheel. plunger to eoiipe'rate With said first means 27. In a machine of the class described, a to shape the Work piece;

5 frame having arecess in a part thereof, a In testimony whereof I have hereunto plunger guided for movements in the frame signed mynam'e to this specification. transverse to the open side of said recess, V j 7 means removably mounted in said recess for FREDRIGK J. SCHWIMMER.