US2163440A - Riveting machine and the like - Google Patents

Description

June 20, 1939 H. A. ToMKlNs A A 2,163,440

RIVETING MACHINE AND THE LIKE.'

Original Filed Dec. 7. v1935 5 Sheets-Sheet 1 Haro/d A. 75m /f/'ns June 2'0, 1939. H. A. ToMKlNs y l 2,163,440

RIVETING MACHINE AND THE LIKE Original Filed Dec. 7, 1935 5 Sheets-Sheet 2 gmwmv' wie 20, '1939. H, A, TQMKINS l 2,163,440

-RIVETING MAcmEAND THE LIKE Original Filled Dec. '7, 1935 5 Sheets-Sheet 5 www Haro/d 75m/fins WMM,

@W www# YJune 2()a i939.k H, A, ToMKlNs 2,163,440

RIVETING MACHINE AND THE LIKE Original Filed Dec. '7, 1.955V 5 Sheets-Sheet 4 gmc/MQ@ Haro/al 75m/fins Fig. a

June 20, 1939. H. A. ToMKzNs RIVETIG MACHINE AND THE LIKE Original Filed Dec. '7, 1955 5 Sheets-Sheet 5 Patented June 20,

UNITED STATES PATENT OFFICE.

Harold A. Tomkins, deceased, assignors to Tomkins-Johnson Company, Jackson, Mich., a oorporation of Michigan Application December 7, 1935, Serial No. 53,404 Renewed September 28, 1938 i Claims.

The present invention relates to riveting machines and the like and more particularly to semiautomatic machines for clinching clinch nuts in holes in sheet metal plates.

In working with sheet metal it is often desirable that holes therein be tapped for receiving bolts or screws for onepurpose or another in order to provide the necessary strength. It is a common practice instead of drilling and tapping holes in the sheet metal itself to clinch internally threaded bushings known as clinch nuts in holes. The present machine although it has numerous riveting and clinching applications is particularly adaptable to clinching clinch nuts in holes in sheet metal.

An object of the present invention is to provide a machine for automatically depositing clinch nuts or the like on an anvil and during the same cycle of automatic operation upsetting or clinching the clinch nuts or the like on the work operated upon.

Another object of this invention is to provide a machine of the character described having its feeding mechanism automatically controlled by compressed air or the like.

A further object of this invention is to provide a safety lock to permit the cycle initiating mechanism to operate only at a predetermined period in the operation of the cycle.

A still further object of this invention is to pro vide an improved mechanical movement for ef fecting the operating movement of the upsetting or clinching die.

Other objects which include a novel, effective and eilicient arrangement and 'combination of elements will be apparent from the following specification when taken with the accompanying drawings in which:

Fig. 1 is a side elevation of the complete machine 'comprising the present invention,

Fig. 2 is a broken away section of the hopper and clinch nut conveying chute,

Fig. 3 is a front elevation of the upper portion of the machine in a somewhat larger scale than that of Fig. 1,

Fig. 4 is a detail showing the clinch nut feeding ram and the locating stop for the clinch nut when it is fed on the feeding carriage,

Fig. 5 is a partial section on the line V--V of Fig 3 disclosing the hopper rotating mechanism,

Fig. 6 is a broken away portion of the upper end of the right side of Fig. 1,

Fig. '7 is a section on .the line VII-VII of Fig.'8 with the clinch nut transferring carriage and ram .in cxtreme retracted position,

Fig. 8 is a broken away section of a part of the machine showing the clinch nut transferring carriage and ram together with the clinch nut receiving anvil and die cooperating therewith,

Fig. 9 is a broken awaysection showing the clinch nut transferring carriage and ram operating piston and cylinder together with air con-` nections therewith,

Fig. 10 is a broken away section showing the lupsetting or clinching die operating mechanism,

Fig. 11 is a side elevation ofa portion of the machine showing the safety catch and is the op,- posite side of the machine from that shown in Fig. 3,

Fig. 12 is a section on the line XII-XII of Fig. 11,

Fig. 13 is a detail showing the vertical section on the pressure releasing valve operated by a shoe on the clinch nut transferring carriage at the end of its forward movement, and

Fig. 14 is a detail showing a vertical section of a clinch nut clinched to a piece'of sheet metal.

Referring particularly to Fig. 1 of the drawings the reference character I indicates a base on 4which the frame 2 is supported. The'power for driving the machine is supplied by a motor'3 which is connectedby a belt 4 to the driving pulley 5. The clinch nuts to be operated on by the machine are placed in a hopper 6 from which they are fed to a carriage 1 which deposits'them on an anvil 8 in position to be clinched Aor upset on the work by the die 9. Automatically and manually operable controlling mechanism hereinafter described control the movement of the carriage 1. e

Fig. 2 discloses a broken away section of the hopper 6. The hopper comprises a rotary cylindrical shell I4 having an internal spider I5 supporting a bearing structure I 6 into which is fitted a fixed spindle I1. The spindle I1 is provided with a Vshoulder I8 against which .said bearing structure rests whereby the shell I4 is supported...

of slots 23 each one being of such a size and configuration as to receive a single clinch nut 24 in a predetermined relative position. As disclosed in Figs. 2 and 4 the clinch nuts 24 have on one side a flange 25 and on the other side a circumi'erential tapered clinching lip 28. The clinch nuts 24 are also provided with a flat side 21 against which a ram 28, later described, acts to position the clinch nuts 24 on the anvil 8.

A stirring vane 35 is made a part of one of the spider arms l5 at the outer end thereof and ex' tends to adjacent the conical base frame 28 for the purpose of stirring and tumbling the clinch nuts 24 in the hopper to dispose one of them in eachof the slots 23 in a predetermined relation thereto. The base |9 is provided with an upstanding ledge 38 which surrounds the lower edge of the shell |4 and prevents clinch nuts 24 in the slots 23 from escaping. At one side of the hopper, arranged to communicate successively with f the slots 23 as the hopper is rotated, is provided an inclined chute 31 into which the clinch nuts 24 gravitate from the slots 23 and from which'k of a shaft 42 suitably journaled in the machine` frame 2. A cam 43 shown in both Figs. 5 and 6 is mounted on the opposite end of the shaft 42 from the gear 4| and acts against a roller follower 44 mounted on a plunger A45, resiliently butindirectly urged against the cam 43 by the spring 48. The spring 48 bears against the shoulder 48 on the pin 49 to urge the pin 49 into engagement with a pawl 58 pivoted on the plunger 45. The pawl 58 has an offset arm 5| angularly disposed with respect to the pawl 58,` against which the pin 49 bears directly, making the pawl 58, in effect, a bell crank. The action of the spring 48 in addition to urging the plunger 45 and con- A sequently the'roller follower 44 against the cam 43 is to urge the pawl 58 into contact with the annular ratchet 52 which encircles the hopper shell I4. It will be thus obvious that as the shaft 42 is rotated, the cam 43 will cause a reciprocation of the plunger 45 and with it the pawl 58 to `"impart to the hopper 8 through the annular ratchet 52 an intermittent rotary motion.

'I'he lower end of the chute 31 terminates in a horizontal portion 55 as shown more particularly in Fig 7, where when the Acarriage 1 is in a predetermined position, the weight of the clinch nuts 24 in the inclined chute 31 urges the clinch nuts 24 onto the outer end of the carriage 1. In order to prevent the clinch nuts 24 from being forced over the carriage 1 a resiliently urged stop 58 is provided. Asshow'n particularly in Fig. 4 when the clinch nuts 24- are delivered to the carriage 1 the flat sides21 thereof are adjacent the ram 28. After a nut has been disposed on the carriage 1 and is about to be transferred to the anvil 8 it is rheld against accidental displacement by the retaining pin 51 on the outer end of the lever 58 pivoted in an open ended slot 59 in the ram 28 as shown in Fig. 8. "y

'Ihe carriage 1 and the ram 28 are arranged to be reciprocatedby the piston rod 88 shown in Figs. 8 and 9, which is in turn actuated by the piston 8| shown in Fig. 9. The piston 8| is reciprocated ina cylinder 82 by compressed air or` other suitable fluid alternately entering and exhausting through tubes 83 and 84 as determined by the controlling mechanism I8 shown in Fig. 1. ' I'he ports 85 and 88 communicating with the cylinder 82 may be reduced in size, respectively, to decrease the speed of operation of the piston 8| by screwing down the screw 81 and/or inserting a bushing in the threaded bore 88.. The cyli inder 82 and its associated structure are secured to the main frame 2 by a bracket 89 and are provided with a, guard 18 shown in Fig, 1.

The carriage 1 is mounted for relative moveand 8, having beveled edges 12. 'Ihe plate 1| is secured by screws 13 to the ram 28 and is slidably mounted on the slideway 14 comprising a part of the frame 2. Also secured to the ram 28 is a shoe 15 slidably disposed in a groove 18. The shoe 15 is secured to the ram 28 by screws 11 as shown particularly in Fig. l1. Slidably passing through the shoe 15 and threadably secured to the carriage 1 is a bolt 18 on which is mounted a spring 19, the action of the spring 19 being that of yieldingly urging the carriage and the ram apart a predetermined distance but permitting the ram to slide relatively to the carriage adjacent the forward end of its Inovement, that is,

` to the left as shown in Fig. 8. It will be obvious that the plate 1|, the carriage 1 and the shoe 15 are securedtogether and moved together as a. unit. As shown in Figs. 3 and 8 plates 88, cooperating with the beveled edges 12 of the plate 1|, are provided for laterally guiding the carriage 1 and ram 28 unit during the greater partv of its outer movement.

Disposed directly over the ram'28 are rollers 8| and 82. The roller 8| is mounted on a rod 84 slidably mounted in the frame 85 so that as the ram 28 is reciprocated by the piston rod 88, the rod 84 is elevated during that portion of the movement of the ram 28 that the high portion 83 of the ram is directly beneath the roller 8|, that is, the roller 8| is cammed upwardly bythe high portion 83 of the ram 28. As shown particularly in Fig. '1 the roller 8| is composed of two portions spaced to provide a clearance 88. As shown particularly in Figs. '7 and 8 the lever 58, pivoted about the pivot 81 in the slot 59 in the ram 28 and urged upwardly at one end by the spring 88, is thus straddled by the roller 8|.

The rod 84 has mounted on the upper end thereof a yoke 98 to the ends of which there are secured depending rods 9| and 92 extending into end of the rod 9| has a stop 98. Disposed on the rods 9| and 92 between the bushings 95 and 98 and the stop 98 and pin 91, respectively, are springs 99. The springs 99 have the function of urging the rod 84, its yoke v98 and associated movable structure, including the pin 9,1, downwardly. The purpose of the pin 91 is to, under certain conditions, engage with the last clinch nut 24 in the horizontal portion 55 of the chute 31 to prevent it from being moved. 'IIhe rod 9|, 'its stop 98 and its spring 99 are for the purpose of balancing the yoke 98 structure.

Consider the carriage 1 and ram 28 as returning from the anvil 8. As the high portion 83 of vthe ram 28 moves against the roller 8|, the rodA 84 and consequently the yoke 98 and pin 91 are of the ram 28. As the carriage 1 and ram 28 con- `ment on a plate 1| shown particularly in Figs. '1

tinue to move to the right as shown in Fig. 8 the l lever 58 contacts with the roller 82 is is rotated about its pivot 81. The purpose of this operation is to lift the retaining pin 51 away from proximity to the carriage 1 to permit the weight of the clinch nuts 24 in the inclined chute 31 to push the last clinch nut'24 on the carriage 1 against the resilient stop -56 and beneath the retaining pin 51. At this point in the operation the carriage 1 and the ram 28 has reached the rightmost limit of their stroke. On the movement of the carriage 1 and ram 28 toward the anvil 8 the lever 58 moves from beneath the roller 82 permitting the pin 51 to drop into the recess in the top of the clinch nut 24 now on the carriage 1. On continued movement, the ram 28 moves from beneath the roller 8| permitting the rod 84, the yoke 90 and the pin 91 to lower, the pin 91 tting into the recess at the top of the last clinch nut 24 in the horizontal portion 55 of the inclined chute 31, just before the ram -28 moves from retaining contact with the last clinch nut 24.

The movement of the carriage 1 continues until it butts against the anvil 8. Then the ram 28, against the action of the spring 19, is moved forward to push the clinch nut 24 from the carriage 1 over the cutaway side |06 of the anvil 8 and into the recess ili'i therein. At approximately 4thesanie time the shoe 15 riding in the groove 16 and connected to the carriage 1 strikes the exhausting valve 85, which results, in a manner to be explained, in a reversal in the direction of movement of the piston 6| in the cylinder 62 and consequently the piston rod 68, carriage 1 and the ram 23. On the return movement of the carriage i the pin 51 slides out of the recess in the top of the clinch nut 24 leaving the clinch nut 24 within the recess |81 in the anvil 8 in position to be clinched or upset by the die 9.

The operation of the machine is initiated bv an operative applying pressure to the treadle H8 which action results in transmitting through the clutch rod iii connected to the treadle M8 a cycle-initiating impulse to the clutch operating mechanism H2. The clutch operating mechanism H2 may be of any standard type where in a single initiating impulse results in the movement of the associated mechanism through an entire cycle. although it is preferred that it be like that disclosed in the copending application of Robert Hofstetter, Serial No.V 36,061. iiled August lli, 1935, now Patent Number 2.691.362, granted August 31. 1937. The main shaft l|3 driven from the pulley 5 is journaled in bearings H mounted in the main frame 2. To the shaft I3 at the portion thereof adjacent the main por' tion of the frame 2 is secured a crank ||5 about which is journaled one end of a connecting rod H6. The connecting rod H8 is pivoted to the center of a toggle i1, the toggle comprising links H8 and H9. One end of the toggle ispivoted to the main frame 2 while the other end is 'nivoted to a cross head |28. The clinching die V9 is secured to the cross head |28 so that as the shaft I |3 is rotated by the pulley 5 the connecting rod H6 is reciprocated by the crank H5 to operate the toggle H1, which in turn reciprocates the cross head |28 and the clinching die 9. The connecting r'od l IB is connected to the crank |5 and the toggle |I1 in such a manner that vas the toggle is straightened out the crank ||5 is on dead cent'er toward the toggle H1 thus resulting in both the toggle and the crank delivering a maximum forceat the same time.

A safety device not essential to the operation of the machine but highly desirable is disclosed particularly in Figs. 11 and 12. Fig. l1 is that portion of the machine which is a continuation of the-lower part of Fig. 6 the opposite side of which is includedin Fig. 3.

Referring particularly to Fig. l2 the end of the ram 28 nearest the anvil 8 is shown. Extending into the path of the ram 28 through the frame 85 end |29 of the bell crank lever |21 is in engagement with the clutch rod Thus, it is only when the carriage 1 is in its rearward position where it has received the clinch nut E4 that the plunger 25 is cammed outwardly to release the hooked end |29 of the bell crank lever |21 from the clutch rod i I, that the clutch rod iii can be lowered to initiate a cycle of operation of the machine.

The operation of my machine together with the description of the mechanism for controllingA the compressed air for actuating the piston 6i is as follows: Referring particularly to Fig. 1 the compressed air controlling valve i355 of the type disclosed in the copending application ci. Oscar G. Tweddell, Serial No. 733,617, led July 3, 1934, is secured to the main frame 2 of the machine. Brieiiy, the compressed air controlling valve 35 comprises a movable member for distributing i compressed air alternately from an inlet to each At the completion of the previous cycle of op-` eration a clinch nut has been disposed in the recess ||i1 in the anvil 8 and the carriage 1 and ram 28 have been retracted to their rearmost position, that is, to the right, as shown in Fig. 8. The first operation is to place the sheet metal on the anvil in such a manner that the tapered edge 260i the clinch nut extends through the hole in the sheet metal in which the clinch nut 24 is to be secured.

The operative then depresses the treadle ||8 which operation draws down the clutch rod i and initiates a cycle of operation of the machine through the clutch controlling mechanism H2.

Uponl the beginning of the cycle of operation of the machine thecrank ||5 rotates to move the connecting rod i6 to straighten out the toggle H1' and'iorce down the die 9 to upset or clinch the tapered ends 26 of the clinch nuts 24 over the edges oi the hole in the sheet metal as showns.

` particularly in Fig. 14. Continued rotation of the lcrank ||5 withdraws the die 9 permitting the operative to remove the sheet metal with the4 secured `clinch nuty fromthe anvil 8. By this time the protuberan'ce |38 rotated with the shaft H3 and the crank H5 and shown in Fig. 6 engages With the pressure releasing valve |39 to exhaust pressure from the left side of the compressed air controlling valve |35 shown in Fig. l, through the v through the tube 63.

tube |46. The result of this exhausting is to providey a direct passage for compressed air from the inlet |36 through the controlling valve |35 to the right side of the cylinder 62 behind the piston 6|, through the tube 64. 'I'he piston 6| is then driven to the left as viewed in Fig. 1 moving the clinch nut transferring carriage 1 which by' this time has received the clinch nut from the horizontal portion 55 of the inclined chute 31 as illustrated in Fig. 7, and the ram 26 until the carriage and ram 26 reach the dotted line position shown in Fig. .8 which is at the end of the extreme forward movement. During this move- -ment the air in the opposite or left side of the cylinder 62 is exhausted through the tube 63 and the port |45, the latter being in the body of the controlling valve |35. In this position the shoe 15 contacts with the pressure releasing valve |05 to release the pressurein the right side of the compressed alr controlling valve |35 through the tube |46. The result is that compressed air from the inlet |36 is conducted through the controlling valve |35 to the left side of the cylinder' 62 'I'he piston 6| is then driven 'to the right, returning by means` of the piston rod 60, the carriage 1 and the ram 23 to the extreme retracted position and leaving the clinch nut 24 in the recess |61 of the anvil 6. At the same time air from the right side of the cylinder 62 is exhausted through the tube 64 and the port |41 in the body of the controlling valve |35. A complete cycle of operation is thus completed and the operation of the machine stops until started again by depressing the treadle Ill.

While the application of this machine has been described as securing clinch nuts to sheet metal it is not intended that it be so limited for it may be equally applicable to other riveting and upsetting operations. Furthermore, itis contemplated that if desirable other mechanism be employed to reciprocate the carriage 'l and the ram 23 although compressed air is desirable because in the event that the operative is unable to remove the work from the anvil 6 before the carriage moves to deposit another clinch nut on the anvil 6 or the mathe impositive action ofthe compressed air prevents the spoiling of the work or the damaging of the carriage.

Having thus described my invention what I desire to secure by Letters Patent and claim is:

l. A machine of the character described comprising a ilxed anvil, a' reciprocable carriage, means to dispose an Vupsettable member on said carriage and means to transfer the upsettable member from said carriage to said anvil.

y 2. A machine of the character described comprising an anvil, a source of supply of upsettable members, means to .transfer said upsettable members from said source, one at a time, to said anvil, said means comprising a carriage and a ram for l moving said upsettable member from said carriage to said anvil, and means to upset said members while on said anvil.

3. A machine of the character described comprising an anvil, a source for upsettable members, a carriage to convey said upsettable members, one at a time. to said anvil, means for conveying said-upsettable members from said source to said carriage, means to upset said members w'hile on said anvil, driving mechanism for said machine to operate said upsetting means, and means controlled by said driving mechanism to move said carriage toward said anvil and con-I away from said anvil.

4. A machine of the character described com' prising an anvil, a source for upsettable members, a carriage to convey said upsettable mem-v bers, one at a time, tov said anvil, means for conveying said upsettable members from said source to said carriage, means to upset said members while on said anvil, driving mechanism for said machine to operate said upsettingv means, controlling mechanism included in said driving mechanism for limiting said driving mechanism for operation during ,a single cycle of the machine only, means for imparting an actuating impulse to said controlling mechanism, and locking means controlled by said carriage to prevent operation of said impulse actuating means during predetermined positions of said carriage.

5. A machine of the character described com-- for moving said upsettable members from saidy carriage onto said anvil, and yieldable means for maintaining said carriage and ram in a predetermined relation but permitting said ram to be moved relatively to said carriage, and means [i .to upset said members while on said anvil.

6. A machine of the character described comprising an anvil, a source of supply of upsettable members, means to transfer said upsettable members from said source, one at a time,

to said anvil, said means comprising a carriage,

a ram for moving said upsettable members from said carriage onto said anvil, means to upset Said members while on said anvil, driving mechanism to operate said upsetting means, compressed air mechanism.for reciprocating said carriage and ram, a source of compressed air and means for controlling the i'low of compressed air to said compressed air mechanism, said means comprising a valve controlled by said driving mechanism and by said carriage. f

7. A machine of the character described comprising an anvil, a reciprocable member arranged to receive an upsettable member to transfer the same to said anvil, a pivoted lever resiliently urged toward said reciprocable member and against said upsettable member to hold said upsettable member against displacement, and means to upset said member while on said anvil.

8. A machine of the character described comprising an anvil, a source of supply of upsettable members, means to transfer said upsettable members from said source, one at a time, to said anvil, said means comprising a carriage, a ram for moving said upsettable members from said carriage onto said anvil, and yieldable means for maintaining said carriage and, ram in a predetermined relation but permitting said ram to be removed relatively to said carriage, a member pivoted on said ram yieldingly urged against the upsettable members on said carriage as they are transferred to prevent displacement, and means to upset said upsettable members while on. said anvil.

9. A machine of the character described comcarriage and into engagement with the upsettable member on said carriage to prevent its displacement, a cam fixed with respect to said rim and carriage for camming said lever away from said carriage on a predetermined movement of said carriage and ram to permit an additional upsettable member to be disposed on said carriage, and means for upsetting said 'members while on said anvil.

-10. A machine of the character described com-y prising an anvil, a source for upsettable mem` `to said carriage, means resiliently urged against the last upsettable member in said gravity conveying means to prevent the feeding-of the same, means cammed by said transferring means for removing said resiliently urged means to permit the last upsettable member in said gravity conveying means to move onto said carriage, said camming by said transferring means being timed with respect to the movement of said transferring means, and means to upset said members While on said anvil. c

11. A machine of the character described'comprising an anvil, a source for upsettable members, means to transfer upsettable members from said source to said anvil, said means comprising a carriage a Vrarn for moving said upsettable members from said carriage onto said anvil, yieldable means for maintaining said carriage and ram in a predetermined relation but permitting said ram to be moved relatively to said carriage, and means for conveying under the action of gravity upsettable members from said source to said carriage, a lever pivoted in said ram and yieldably urged toward said carriage against an upsettable member thereon for preventing displacement thereof, meana fixed relatively to said transferring means to cam said lever away from said carriage at a predetermined movement of said carriage to permit another upsettable member to be disposed on said carriage upon movement of said transferring means adjacent thereto, means resiliently urged against the last upsettable member in said gravity conveying means to prevent the'feeding of the same, means cammed by said transferring means for removing said resiliently urged means to permit the'last upsettable member in said gravity conveying means to move onto said carriage, said camming by said transferring means being timed with respect to themovement of said transferring means, and means to upset said members while on said anvil.

12. A machine of the character described comprising an anvil, a source for upsettable members, means to transfer said upsettable members from said source to said anvil, said means comprising a carriage, a ram for moving said up-l settable members from said carriage onto' said anvil, yieldable means for maintaining said carriage and ram in a predetermined relation but permittingsaid ram to be moved relatively to said carriage,`and means for conveying under the action of gravity upsettable members from said hopper to said carriage, a lever pivoted in said ram and yieldably urgedtoward said carriage against an upsettable member thereon for preventing displacement thereof, means xed relatively to said transferring means to cam said lever away from said carriage to permit another upsettable member to be disposed on said carriage upon movement of said transferring means adjacent thereto, means resiliently urged against the last upsettable member in said. gravity conveying means to prevent the feeding of the same, means cammed by said transferring means for removing said resiliently urged means to lpermit the last upsettable member in said gravity conveying means to move onto said carriage, said camming by said transferring means being timed with respect to the movement of said transferring means, means to upset said members while on said anvil, driving mechanism for said machine to operate said upsetting means, and means controlled by said driving mechanism to move said carriage toward said 'anvil and controlled by said carriage to move said carriage away from said anvil.

13. A machine of the character described comprising an anvil, a source for upsettable members, reciprocable means for conveying upsettable members, one at a time, to said4 anvil, means for conveying said upsettable members from said source .to said reciprocable means, means to upset said members while on said anvil, driving mechanism for said machine to operate said upsetting means, and means controlled by the driving mechanism to move said reciprocable means toward said anvil and controlled by said reciprocable means to move said reciprocable means away from said anvil.

14.' A machine of the character described comprising an anvil, a source for upsettable members, reciprocable means to convey said upsettable members, oneat a time, to said anvil, means for conveying said upsettable members from said source to said reciprocable means, means to upset said members while on said anvil, driving mechanism for said machine to operate said up. setting means, controlling mechanism included in said driving mechanism for limiting said driving mechanism for operation during a single.

cycle only of the machine, means for imparting an actuating impulse to said controlling mechanism, and locking means controlled by said reciprocable means to prevent the operation of said impulse actuating means during predetermined positions Vof saidA reciprocable means.

15. A machine of the character described, com- -prising an upsetting station including anl anvil elevated above its adjacent associated structure to provide clearance upon all sides of said anvil and below the level thereof, a loading station located a substantial distance to one side of said ilrst station, a source of supply of upsettable members, means for transferring said upsettable members from said sourceto said `loading station, and a carriage for bodily supporting and transferring said upsettable members from said loading station to said elevated anvil.

HAROLD A. TOMKINS.

. CERTIFICATE 0F c'oRREcTIoN. Patent No. 2,l65',h)40. June 20, 1959.

' HAROLD'y A. ToMKINs. A

`It is hereby certifie'dthat error appears4 in the printed specification' Vof the above numbered patent requiring correction es follows: Page 5, first column, line. 10, for' the ,word "has" re'ad have; pageS, first column, line 7, claim 9, for "rim" read ram; lami second'column, line, claim l2, for

"hpper" `read source; and that the said Letters Patent should be read with this correction` therein that the. same may conform to the record of the lcease in the' Patent office.

Signedend sealed this'lst day. of' August, A. D. 1959.

Henry van .Ar-saale (Seal) Acting. Commissioner of Patents.

Images