US1018706A

US1018706A - Bolt threading and slotting mechanism.

Info

Publication number: US1018706A
Application number: US61136711A
Authority: US
Inventors: George A J Hainsworth
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-02-28
Filing date: 1911-02-28
Publication date: 1912-02-27
Anticipated expiration: 1929-02-27

Description

G. A. J. HAINSW'ORTH. BOLT THBBADING AND BLOTTING MECHANISM. APPLICATION FILED 11113.28 1911.

1,018,706. Patented Feb. 27, 1912.

6 BBEETBBHEBT 1.

avwc/wtov WW0 Ge OrgeAAZHainsworM w.

mum mum w jlklllm. II- C.

G. A. J. HAINSWORTH.

BOLT THEEADING AND SLO'ITING MEGHANISM. APPLICATION IILBD ran as, 1911.

68 75 M In a9 @0 a: 60 u uOLullllA warn 50.. VAIIIIW. n. c.

' G. A. J. HAINSWORTH.

BOLT THRBADING AND BLOTTING MEGHANISM.

i APPLIOATIOR FILED PEB.2B, 1911. 1 ,'018,7;'06.

6 SHEETS- HIST 3.

umml' sllllllll COLUI LANOGIAF" OmJ/ABIUNWUN. n. c

G. A. J. HAINSWORTH.

BOLT THBEADIRG AND sno'r'rme mnonamsm.

APPLIOA'IIOH FILED P3128. 1911.

I, 0 a mu w 6 1 %w n m 7 I m 7 6 a 1.. n 6 H m m w J .6 6 7 n m U 0 O u 6 W 9 Ge 1 w w 1 8 Z a 9 Ma a w m 5 M m E x m E W k L lulu rLANonlAPn C0 WASH G. A. J. HAINSWORTH. BOLT THREADING AND SLOTTING MECHANISM.

APPLIGATION FILED PEB.28. 1911,

Patented Feb. 27, 1912.

B SHEETS-SHEET 6.

UNITED STATES PATENT OFFICE.

GEORGE A. J. HAINS'WORTH, 0F NEWARK, OHIO.

BOLT THREADING AND SLOTTING- MECHANISM.

To all whom it may concern:

Be it known that I, Gnonsn A. J. HAINS- WORTH, a citizen of the United States, residing at Newark, in the county of Licking and State of Ohio, have invented certain new and useful .Improvements in Bolt Threading and Slotting Mechanism, of which the following is a specification, reference being had to the accompanying draw- 11'! s.

lhis invention relates to machines for threading bolt shanks and automatically slotting the heads of the bolts, the invention having for its primary object the provision of automatic means for feeding the bolts to the threading dies after they are discharged from the forming machine which provides the bolt shanks with heads.

Another object of the invention resides in the provision of a stationary die, a movable die and means for moving the latter, and means movable with said latter die to slot the heads of the bolt shanks.

Another object oi the invention is to provide a rotatable feed table, means for intermittently rotating the table, means for automatically positioning the bolts to be threaded between the dies, and additional means for rigidly holding the feed table against rotation during the slotting operation.

Still another object of the invention is to provide a simple and novel arrangement of elements whereby the bolt shanks are singly positioned on the feed table in the simultaneous operation of the slotting and threading mechanism.

A further object of the invention is to provide a rotatably mounted feed table having means to receive a plurality of bol t shanks to be threaded, means for simultane ously threading and slotting separate bolts carried by the feed table, reciprocatory means for intermittently rotating the table, means for rigidly holding the table against rotation during the slotting and threading operation, and means automatically actuated in the movement of the table rotating means to its normal position to singly dispose the bolt shanks from a suitable hopper upon the feed table.

With the above and other objects in view,

the invention consists of the novel features Specification of Letters Patent.

Application filed February 28, 1911.

Patented Feb. 2'7, 1912.

Serial No. 611,367.

of construction and the combination and arr'angement of parts hereinafter fully described and claimed, and illustrated in the accompanying drawings, in which.

Figure 1 is a side elevation of an auto matic bolt threading and head slotting machine showing the connection of the same to the head forming machine; Fig. 2 is a similar view of the slotting and threading machine looking at the opposite side thereof to that shown in Fig. 1; Fig. 3 is a top plan view showing the parts in position as the bolt is delivered to the threading dies; Fig. 4 is a similar view showing the manner in which the bolts are moved from the mouth of the hopper into the receiving arms arranged upon the rotatable feed table; Fig. 5 is a section taken on the line 5-5 of Fig. 3; Fig. 6 is a section taken on the line 66 of Fig. 3; Fig. 7 is a detail side elevation of the stationary threading die and the bolt directing post and arm; Fig. 8 is a detail perspective view of the reciprocatory connecting bar to which the movable die is secured; Fig. 9 is a detail bottom plan view of the rotatable feed table; Fig. 10 is a detail perspective view of the pawl for holding said table against rotation; Fig. 11 is a detail perspective view of the slotting knife and slide together with the supporting bar therefor; and Fig. 12 is a detail fragmentary perspective view of the feed table and the bolt hopper, showing the manner of retaining the bolts in position in the mouth of the hopper for automatic disposal in the arms of the feed table.

The present invention is designed with a view to facilitating the threading of bolt shanks and the slotting of the bolt heads after they are delivered from the forming machine. I accomplish this end by providing a mechanism as an accessory to the former, whereby the headed shanks are successively and automatically delivered from the" former to the slotting and threading mechanism, no manual operation whatever being required. The manner in which I attain the above result is fully disclosed in the accompanying drawings and embodied in the following description.

The forming machine is of common con struction and is not shown in detail in the drawings nor will the same be so dQcribed as it forms no part of the present invention- It will suffice tostate that the connection of my improved mechanism with said forming machine whereby it is actuated ls ell'ccted by means of, a pitman 5 connected to an eccentric E arranged upon the fly whee] shaft S which is suitably mounted u n the supporting frame F of the head ormmg mechanism. This connecting bar 5 1s p votally connected at one end to an arm 6 which is mounted upon a suitable stud hear ing arranged in the opposite end of the frame F. I a

The of threading and slotting device is connec. J to the arm 6 and s actuated therebyin itsoscillato movement.

It will be understood that ot er cpnnecting means of the and slotting device to the former are. contemplated and that the practical use of. my improvements are by no means limitedto the connections o e described and illustrated.

The slotting and threading mechanism xtself in which my invention more particularly resides, incl'udes'a frame 7 which consists. of the two parallel longitudinal angle bars 8, mounted upon the up r ends of similar an ularstandards 9. e vertical flanges of hhe arallel ways or guides are arranged at t eir outer edges, the inner edges of said angle bars being slightly spaced,

as shown in Fig. 3. To one of the angular ways or guides a stationary (118 10 is rigidl secured diss-in the fognhofha bloc1 ha" incin en againstw 'c t eange bra dli ts 11 are engaged, said brackets being rigidly fixed by means of the screws 12 to the vertical fla of the angle bar 8 which forms the f: In the accompanying o y one of said brackets is shown, the other being located beneath the bolt carrying table to be latcr described, Adjusting screws 13 are also threaded through the vertical flange of the uide and hear a amst thedie 10 to force same inwardly to ward the longitudinal space between the innor ediesof the guide bars This d e rests upon e horizontal flange of the guide bar and in the o ration of the mechanism, its inner face w ch is provided with the cutthreads His slightly spaced from the edge of said guide bar for a purpose which will be more fully disclosed in the following description. A movable die 15 is also arranged upon the other of the angular guides or ways S. This die is also provided with a threaded face 16 s'milar to the threaded face 14 of the die 10 to which it is opposed. The movable die 15 is secured in the end of the reciprocatory bar 17, the end of said bar being end of the die abuts. A plate 18 is secured to one side of the bar 17 and engages the.

other-3nd of said die- A screw 19 is thread 65 ed through the angular end of the reciproat an angle against which one catory bar 17 and engages said block to rigidly fix the same in position. The inner edge portion of the movabledic 15 extends beyond the logitudinal inner edge of the angular guide or way 8 and in the threading of the bolt shanks the bolts are adapted to be caught and moved between the opposed threaded faces of the dies 10 and 15, and at the end of the movement of the movable die 15 when the bolt shanks will have been moved across the entire opposed faces of the dies, the bolt is deposited through the recesses '20 which communicate with the space between the inner edges of the ways or guides, into a suitable'receptacle arranged beneath the same. The reciprocatory bar is connected to the oscillatory arm 6 by means of a U-shaped link orclevis 21 the ends of which are provided with short longitudinal slots to permit of the movement on the clevis upon the pins 23 which project from opposite sides of the arm 6. A roller 24 is mounted in the end of the bar 17 and bears against the arm 6. A coil spring 25 also connects said arm and bar and acts to hold the'roller -24 yieldingly in engagement with said am whereby, in the oscillatorymovement of the arm said roller may freely rotate longitudinally thereon as the slotted ends of the connecting link or clevis move upon the pins 23. By providing such connections, the movable die block has free sliding movement upon the frame, and the connecting bar 17 is relieved of undue strain, which would be caused if said bar were directly connected to the arm 6, owing to its oscillatory movement.

The die 15 and the bar 17 to which itis secured are held upon the angular guide or way 8 against vertical movement by means of a longitudinal bar 26 which at its ends is secured to the angular bar 8 and is dis 1 above the same, the ends of the bar 26 slightly ofl'set so as to dispose said bar immediately above the connecting rod. The manner in which the bolt shanks after they have been headed and discharged from the forming machine, are inde ndently and successively fed to the slotting mechanism and to the thread cutting dies, will now be set forth in detail.

Upon the angular guide or 'way 8 on which the stationary die 10 is secured, a vertical pivot rod 27 is arranged, said pivot rod or shaft being mounted in a suitable bearing bracket 28 which is fixed to the side of the angular guide or way. Upon the uppcr end of the shaft "27, the circular feed ing wheel or table '29 is mounted. A plurality of arms 30 are radially arranged upon .'said table and rigidly fixed thereto by means of the screws 31 which extend entirely through the body of the feed table and are threaded into the plates 32 arranged on the under side thereof. The outer ends of the arms 30 project beyond the peripher of the feed table 29 and are provided wit the open ended slots or recesses 33 which are of sufiicient depth to extend substantially more than one-half the width of said arms. These recesses are adapted to receive the bolt shanks from a hopper 34 into which they are deposited from the forming machine. The particular construction of this hopper and the manner in which the bolt shanks are singly delivered to the arms arranged upon the rotatable feed table will be later described in detail. In order to ri idly hold the rotatable table in position w ile the bolts of the headed shanks are being slotted, I provide a movable awl 35 which is arranged upon one side of te bearing plate 28 in which the shaft 27 is arranged. This pawl is provided with a longitudinal slot 36 through which the bolts 37 extend These bolts 37 have a frictional engagement with the shaft 27 and rigidly secure the same in the bearing bracket or plate 28 and overcome any vertical movement whatever of the table 29 during the actuation of the slotting mechanism or the means whereby said table is intermittently rotated. A coil spring 38 has one of its ends secured to the upper bolt 37 and is secured atits other end' to the lower end of the sliding pawl 35. This spring normally acts to move the pawl upwardly into engagement with the under side of the table 29. U n the under side of the table and in line with each of the arms 30, the plates 32 are secured. The upper end of the movable pawl 35 is recessed, as indicated at 40, to receive these stop lugs. One side of this recess forms a. square shoulder 41 while the other side thereof is curved, as indicated at 42, so that the lug may bear againstthe same and depress the sliding pawl in the continued rotary movement of the feed table. The upper edge of the pawl on the opposite side of the shoulder 41 is also curved as indicated at 43, so that the enga ement of the plate 32 therewith will force the pawl downwardly until the lug moves into the recess 40 when the spring 38 will return the pawl to its normal position and the engagement of said log with the shoulder 41 will eti'ectually prevent any retro rade movement of the feed table, thereby insuring its rotation in one direction and holding the same rigid during the operation of the slotting mechanism which. as will appear from the draw; ings and the following description is so arranged with relation to the location of the pawl 35 that its operation will not effect the circular movement of the table by causing sulficient prtxure of the plate 32 against the curved upper edge portion 42 of the pawl so as to depress said pawl and release the table.

The means for intermittently rotating the food table. consists of a longitudinally slidable spring retracted bar 44 which is mounted for movement in a U-shaped guide bracket 45 fixed to one of the angular supporting standards 9 upon which the ides or ways are arranged. An arm 46 is also rigidly secured atone end to said standard and one end of the retractile spring 47 is secured to the other end of said arm, said spring having its other end connected to a pin 48 fixed in the slida-ble bar 44.

The bar 44 is automatically actuated in the return reciprocating stroke of the connecting bar 17 through the medium of an arm 50 which is pivotally mounted intermediate of its ends u n the upper end of a support 51 which 15 also secured to the frame standard 9. One end of this lever is disposed in an elongated longitudinal slot 52 in the end of the slidable bar 44. The lever 50 is moved upon its pivot by means of a dog 53 which is pivotally mounted upon one side of the reciprocatory connecting bar 17 as indicated at- 54. This dog is normally held in an elevated position so that its free end is di osed above the plane of the upper longitudlnal edge of the connecting bar. The dog is yieldingly held in such position for engagement with one end of the arm 50 in the return stroke of said .bar by means of a coil spring 55 which is disposed upon a pin 56, the upper end of which extends into a recess or socket 57 in the dog. The lower end of the pin 56 is fixed in a short cleat 57 which is secured to the side of the bar 17. As will be clearly seen from reference to Fig. 4, upon the return stroke of the bar 17 after a bolt shank has been threaded and dischar ed from between the dies, the free end 0 the dog 53 is broughtinto engagement with the pivot ally mounted arm 50 to oscillate the same on its pivot and move the bar 44 longitudina-lly against the tension of the retractile 5 ring 4-7. In this movement of the bar 4-4 tie same en ages one of the plates 32 on the under side of the vertical feed table 29 and moves the same for the distance between adjacent arms 30 in the direction of the arrow, as indicated in said figure. In this movement of the table the bolt which was slotted in the previous forward movement of the bar 17 is positioned by the rotation of the feed table and automatically disposed for engagement by the movable die 15, said die rotating the bolt shank in its longitudinal movement so as to cut the threads upon the periphery of the shank. In this intermittent movement of the table the bolts are also automatically moved into position as they are successively arranged in the ends of the arms 30 so that they are pnoperly disposed for engagement by the slotting knife. as will now be Set forth.

My improved slotting mechanism comprises a sliding plate 58 which is mounted upon the upper end of a vertical supporting bar 59 secured to the frame of the machine. The upper end of this bar is flanged and has a beveled undercut face 60 which is opposed to the beveled edge 62 of the plate 61 rigidly fixed upon one side of the bar 59 by means of suitable screws 63. The longitudinal edges of the slide plate 58 are beveled for engagement upon the beveled surfaces 60 and 62. The plate 58 has secured upon one Side thereof a stop plate 64 and adjacent to one end of this stop the slotting knife 65 is pivotally mounted upon the sliding plate 58, as indicated at 66. The knife 65 can only move in one direction, however, the end of the stop plate 64 preventing any movement of the knife blade upon its pivot when the same moves into engagement with the head of the bolt to be slotted. This sliding plate 58 upon which the slotting knife is mounted is automatically moved in the forward movement of the connecting rod 17 which moves the die 15 to perform the threading operation, by means of a pawl 67 which is pivotally mounted upon an arm 68 fixed to the bar 17. The pawl 67 is disposed in a plane atright angles to the dog 53, and upon the upper end of the standard 68 a shoulder 69 is formed against which the pivoted end portion of the pawl 67 is yieldingly held by means of the coil spring 70 one end of which is fixed to the upper end of the standard 68 and has its other end secured to the free end of the pawl 67. It will, therefore, be seen, from reference to Fig. 3, that upon the forward stroke of the connecting bar 17, the free end of the spring held pawl 67 is brought into engagement with the end of the sliding plate 58, whereby said plate is moved in the upper end of its support or guide 59 and the cutting lower end of the knife blade 65 is brought into engagement with the head which has previously been formed 11 on the bolt shank. The forward portion 0 the lower cutting end of the knife blade is sharpened to provide a V-shaped cutting edge, as indicated at 65 so as to readily cut into the metal, while the rear portion of the lower cut-ting end of the blade is square, as indicated at 65". This rear portion of the cutting edge of the knife provides a rectangular slot extending entirely across the bolt head. It will, of

course, be understood that the metal is in a comparativelysoft state, having only recently been discharged from the forming machine with which my improved mechanism is coiiperatively associated. The slotting knife 65 after providing the slot in the head of the bolt is retracted to its normal position by means of a S ring 71 which is secured at one end to a pin fixed in the upper end of the support 59 and at its other end to the sliding plate 58. In the reverse reciprocatory movement of the connecting bar 17, the edge of the operating pawl 67 engages the knife slide 58 and is forced inwardly toward the connecting bar. After passing the knife, the operatin pawl is returned to its normal position by means of the spring 70.

As thus far described, it will be seen that my improved bolt threading and slotting mechanism is entirely automatic in its operation, one bolt which has previously been slotted being moved between the stationary and movable die and provided with the threads upon its shank while at the same time the next succeeding bolt shank carried by the feed table has its head provided with the slot.

In addition to the above mentioned features of the machine I also make provision for the automatic feedin of the headed bolt shanks to the intermittently rotatable table 29. The arrangement of the elements constituting this ortion of the device and the manner in w ich they are operated is substantially as follows: The hopper 34 is formed with the inclined walls and the bottom thereof is provided with a longitudinal slot 7 2 through which the shanks of the bolts are disposed, the heads resting upon the opposite edges of said slot. The hopper is positioned beneath the discharge s out of the forming machine, as shown in ig. 1, and is inclined so that the bolts ravitate downwardly and are positioned in a contracted neck 73 which is formed upon the lower end of the hopper. A leaf spring 74 is secured atone end to the wall of the hopper and the other end of said spring bears upon the head of the bolt shank which is disposed in the outer end of the neck 73 to retain the same in position to be fed to the arms 30 of the rotatable table 29. The bolts are successively fed into the recesses 83 in the outer ends of said arms by means of a finger bar 75 which is pivotally mounted upon the end of an arm 76 rigidly fixed at its other end to the vertical flange of one of the angle bars 8. One end of the finger bar 75 is pointed, as shown at 75, and is adapted to enga e between the heads of the outermost bots which are arranged in the neck of the hopper and force the outer bolt from said neck against the tension of the spring 74, into the slot 33 of one of the radial arms 30 carried by the table 29. A sprin 77 is connected to the other end of the nger bar 75 and to the supporting arm 76 and normally acts to move the bolt engaging end 75 of said bar outwardly away from the bolts. This finger bar 75 is automatically engaged and actuated in the rearward movement of the slidable bar 74 after the table 29 has been rotated in the return movement of the connecting bar 17. This operation is clearly shown in Fig. 3 of the drawings and occurs immediately after the turning movement of the table.

In order to effect an automatic removal of the bolts from the arms 30 to dispose the same between the threading dies after the heads of the bolts have been slotted, I provide the diagonally disposed arms 79 which are formed upon the upper end of the bar 78 fixed at its lower end to the outer vertical flange of the angle bar 8. The extremity of the diagonal arm 7.) is disposed just above the plane of movement of the extremities of the radial arms 30 and has a curved notch or recess 7 9 therein to engage the head of the bolt 13 and force the same out of the recess 33 in the end of the arm as the table 29 rotates. The bolt is directed between the threaded faces of the dies 10 and 15 by means of the vertical post 80 which is arranged at one end of the stationary die 10 and is rigidly fixed upon the angle bar 8 of the frame. The face of the post 80 is of concave form and is inclined downwardly and inwardly from top to bottom, as indicated at 81. By providing this concave inclined face, when the bolt is disengaged from the end of the arm 30 by means of the diagonal arm 79, it slides down this inclined face and is engaged by the threaded face of the movable die 15 in the forward stroke of the connecting bar 17. As the die 15 continues this movement the bolt B is moved between the opposed threaded faces of the dies 10 and 15 and during such movement is provided with the threads upon its periphery. At the end of the forward movement of the die 15, the bolt B is discharged beyond the end of the stationary die 10 through the recess 20 in the inner opposed edges of the angle bars 8 and is deposited in a suitable receptacle arranged beneath the same.

From the above description, the operation and construction of my improved threading and slotting mechanism will be readily understood.

The operation of the parts is entirely automatic and no manual handling of the bolts is necessary from the time the bolts leave the forming machine until they are discharged from the threading dies.

The device may be arranged for operation in connection with a head forming machine of any improved construction, and the rotatable table 29 may be provided with any desired number of the bolt receiving arms, the reciprocatory action of the connecting bar 17 being increased in speed by means of any Well known arrangement of elements so that the mechanism may be readily arranged for receiving and threading and slotting the bolts in accordance With the rapidity of operation of the forming machine.

The various parts of the mechanism are also susceptible of many other modifications in regard to the form, proportion and arrangement thereof without de arting from the essential feature or sacri cing any of the advantages of the invention.

Having thus described the invention What is claimed is:

1. In a machine of the character described, threading mechanism, a rotatable bolt carrying table, means for intermittently rotating said table, means for successively feeding a plurality of bolts to said table, means automatically actuated independently of the feeding mechanism to successively slot the bolt heads, and additional means for successively removing the bolts from the table in its rotation to be acted upon by said threading mechanism.

2. In a machine of the character described, a bolt threading mechanism including stationary and movable threading dies, a bolt carrying table, means for rotating said table in the non-effective movement of said movable die, means actuated by the movable die for slotting the head of a bolt carried by the table, and additional means for directing the bolts from said table between the threading dies.

3. In a machine of the character described, a stationary die, a movable die, and means for reciprocating the same, said movable die being arranged in opposed relation to the stationary die, a rotatably mounted bolt carrying table, means for intermittently rotating said table to successively position the bolts carried thereby for engagement by said movable die, and means automatically operated by the reciprocating die in its movement in one direction to slot the head of one of the other bolts carried by the table.

4. Inamachine of the character described, stationary and movable threading dies, a rotatable table, bolt receiving means arranged on said table, means for intermittently rotating said table, means automatically actuated by the movable die to slot the head of one of the bolts carried by the table, and a stationary element to engage the bolt heads and remove the same from the table in its rotation for engagement in the threading dies.

5. Inamachine of the character described, stationary and movable dies, a rotatable table, bolt carrying arms arranged on said table, means automatically operated in the movement of said movable die in one direction to rotate said table, stationary means to successively engage the bolts and remove the same from said arms for engagement by said movable die, and means automatically operated by said die in its bolt threading movement to successively slot the heads of the bolts arranged in said arms.

6. In amachine of the character described, threading mechanism, a movable feeding member adapted to receive a plurality of bolts to be threaded, means automatically actuated by said threading mechanism to intermittently move said feeding member, additional means cooperatively associated with the threading mechanism and actuated thereby to successively slot the heads of the bolts when said member is stationary, means for removing the slotted bolts from said member and directing the same to the feeding mechanism, and additional means automatically actuated by the means for moving the bolt carrying member to position a bolt upon said member to be carried thereby.

7. In a machine of the character described, stationary and movable dies, a rotatable table, a plurality of radial arms fixed to said table and extending beyond the periphery thereof, means for successively removing the bolts from the arms to position said bolts for engagement by the movable die in its movement in one direction, means automatically actuated by said die in the movement thereof in the reverse direction and engaging means carried by said table to rotate the table, and means actuated in the bolt threading movement of the movable die to slot the head of one of the bolts arranged in said arms.

8. In amachine of the character described, stationary and movable threading dies, a rotatable table, bolt carrying arms arranged on said table, means for intermittently rotating the table, means automatically actu ated by the movable die in its efi'ective move ment to slot the head of one of the bolts carried by the table when said table is stationary, additional means for successively engaging and removing the slotted bolts from the table in its rotary movement, and means to receive said bolts and direct the same between the threading dies.

9. In amachine of the character described, a stationary die, a reciprocal die and means for actuating the same, a rotatable table, a plurality of radial bolt carrying arms fixed to said table, a stationary element to successively engage the bolts arranged in said arms and remove the same therefrom, means for directing said bolts between the stationary and movable dies, means for intermittently rotating the table, and means automatically actuated by the movable die to successively slot the heads of the bolts arranged in said arms at the end of each rotation of said table.

10. In a machine of the character described, bolt threading mechanism including a reciprocal die, a movable carrier adapted to receive a plurality of bolts, means automatically actuated in the movement of the reciprocal die to intermittently rotate the carrier, slotting mechanism cooperatively associated with the. movable die and actuated by the same in its threading movement to successively slot the heads of the bolts arranged on the carrier in advance of the engagement of said bolts by said die, and additional means automatically actuated by said carrier rotating means at the end of its operative movement to feed a bolt to said carrier.

11. In a machine of the character described, bolt threading mechanism, a feed member carrying a plurality of bolts, means actuated by the threading mechanism to intermittently rotate said member, a slidably mounted slotting knife, means carried by the threading mechanism to engage and actuate said knife to successively slot the heads of the bolts in advance of their en gagement by said threading means, and additional means to remove the slotted bolts from the feed member and dispose the same for engagement by the threading mechanism.

12. In a machine of the character described, a stationary die, a reciprocal die and means for actuating the same, a rotatably mounted table, a plurality of bolt receiving members arranged in spaced relation on said table and rigidly fixed thereto, means for automatically engaging and removing the bolts from said receiving members for engagement by the reciprocal die in its movement in one direction whereby said bolt is engaged between the opposed faces of said dies and provided with threads, means auto" matically actuated in the reverse movement of saidreciprocal die to rotate said table and successlvely position the bolts carried there by for engagement by the threading dies, additional means automatically actuated by said table rotating means in the reverse reciprocal movement of said threading die to successively feed the bolts to said receiving members, and bolt slotting means automatically actuated by the reciprocal die at the end of each rotation of the table to slot the heads of the bolts arranged in said receiving members.

13. I11 a machine of the character described, a stationary die, a reciprocal die arranged in opposed relation to the stationarydie, means for actuating the reciprocal die, a rotatable table, bolt carrying means arranged on the table, a slotting knife, means to engage and move the slotting knife 1n the movement of the reciprocal die in one direction to slot the bolt heads, and means for discharging the slotted bolts from the table to position the same between the stationary and movable dies.

14. In a machine of the character described, a stationary die, a reciprocal die arranged in opposed relation to the stationary die, means for reciprocating the latter die, a rotatable table, bolt carrying means rigidly fixed upon the table, a spring held movable slotting knife, a pawl movable With the reciprocal die in its movement in one direction to engage the slotting knife and move the same and successively slot the heads of the bolts carried by the table as the table rotates, and stationary means to automatically discharge the slotted bolts from the table and position the same between the opposed faces of said dies.

15. In a machine of the character described, a stationary die, a reciprocal die opposed to the stationary die, means for actuatin said reciprocal die, a rotatable bolt carrying table, means for intermittently rotating said table, a slotting knife, means operated by the reciprocal die for automatically actuating said knife to slot the heads of the bolts in the movement of the reciprocal die in one direction and at the end of each intermittent rotation of the table, and means for automatically discharging the slotted bolts from the table to position the same between the opposed surfaces of said dies.

16. In a machine of the character described, a stationary die, a reciprocal bar and means for actuating the same, a movable die carried by said bar and arranged in opposed relation to the stationary die, a rotatable table, a plurality of bolt receiving members arranged in spaced relation on said table, a slidably mounted slotting knife, means movably arranged on said reciprocal bar to engage the slotting knife in one direc' tion of movement of said movable die and move the knife into engagement with the bolt heads to successively slot the same in the rotation of said table, and means for discharging the slotted bolts from the table between the opposed surfaces of the stationary and movable dies.

17. In a machine of the character de scribed, a stationary die, a reciprocal bar and means for actuating the same, a movable die rigidly fixed to said bar and opposed to the stationary die, a rotatable table, a plurality of spaced bolt carrying members fixed upon said table, a slidably mounted slotting knife, a spring held pawl mounted upon said reciprocal bar adapted to engage the slotting knife in one direction of movement of the reciprocal bar to move said knife into engagement with the bolt heads and slot the same, means automatically actuated in the reverse reciprocal movement of the connecting bar to intermittently rotate said table and successively position the bolt heads in alinement with the slotting knife, and stationary means to engage the bolt heads and remove the bolts from the carrying members to deposit the same between the opposed faces of the stationary and movable dies.

18. In a machine of the character described, bolt threading mechanism, a bolt carrier and means for intermittently rotating the same, slotting mechanism cooperatively associated with and actuated by the threading mechanism to successively slot the heads of the bolts on said carrier, means for removing the bolts from the carrier, and additional means automatically actuated by the carrier rotating means to feed a bolt to the carrier at the end of each of its rotative movements.

19. In a machine of the character described, a stationary die, a movable die, and means for actuating the same, said dies being arranged in opposed relation, a rotatably mounted table, a plurality of bolt receiving members arranged in spaced relation on the table, slotting means automatically actuated by the movable die in its threading movement in one direction to slot the bolt heads, means actuated in the movement of said die in a reverse direction to move the table and successively position the bolt heads in alinement With the slotting means, additional means for rigidly holding the table against rotation during the slotting of the bolt heads, and means for automatically discharging the slotted bolts from the receiving members to position the same between the opposed faces of said dies.

20. In a machine of the character described, stationary and movable threading dies arranged in opposed relation, means for actuating the movable die, a rotatable table, bolt receiving members arranged in spaced relation on the table, slotting mechanism automatically actuated by the movable die in its threading movement, a spring held bar movable beneath said table actuated in the reverse movement of said movable die, means arranged on the table to be engaged by said bar whereby the table is rotated to a predetermined extent to successively position the bolts for engagement by the slotting mechanism, and additional means for automatically remo ing the slotted bolts from said receiving members and positioning the same between the threading dies in the rotation of the table.

21. In a machine of the character described, stationary and movable threading dies, means for reciprocating said movable die, the threading surfaces of said dies being arranged in opposed relation, a movable bolt carrying element, means for intermittently moving said bolt carrying element, means actuated by the movable die in its movement in one direction to engage the head of a bolt at the end of the movement of said carrying element to slot the same and additional means for successively removing the slotted bolts from said carrying element to dispose the same between the opposed threading surfaces of said dies.

22. In a machine of the character described, bolt threading mechanism, means automatically actuated by the threading mechanism to successively feed the bolts thereto, a slotting knife, and means carried by the threading mechanism to engage and actuate said slotting knife during the threading of a bolt to slot the heads of the bolts previous to their engagement with the threading mechanism.

23. In a machine of the character described, threading mechanism including a movable die, an intermittently rotatable bolt carrier automatically actuated in the nonefiective movement of said threading die to dispose one of the bolts carried thereby to be threaded, and a slidably mounted slotting knife automatically actuated by said die in its effective movement to slot the heads of the bolts previous to their engagement by the die.

24. In a machine of the character described, threading mechanism including a movable die, a bolt carrier adapted to receive a plurality of bolts to be threaded, means automatically actuated in the noneffective movement of said threading die to move said carrier and dispose one of the bolts carried thereby for engagement by the die, a movable slotting knife, and means carried by said movable die to engage said knife and actuate the same to successively slot the bolt heads in the effective movements of said die and when the carrier is stationary.

25. In a machine of the character described, stationary and movable threading dies, means for actuating the movable die, a rotatably mounted table, a plurality of bolt receiving members arranged in spaced relation on said table, means for rotating said table in one direction of movement of the movable die, a sliding spring held pawl having a shoulder formed on one end, a plurality of lugs arranged on the under side of the table to engage against the shoulder of said pawl to rigidly hold the table against rotation in one direction, bolt slottin means actuated by the movable die in its orward threading movement to successively slot the heads of the bolts, and additional means for removing the bolts from the receiving members and depositing the same between the threading surfaces of said dies.

26. In a machine of the character described, threading mechanism, a bolt carrier adapted to receive a plurality of bolts and successively dispose the same for engagement with said threading mechanism, slotting mechanism cooperatively associated with the threading mechanism and actuated thereby to slot the bolt heads, a bolt container arranged adjacent to the carrier, means actuated by the threading mechanism to intermittently move the carrler to a predetermined extent, and additional means actuated by said last named means when the carrier is stationary to feed a bolt from the container to said carrier.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses.

GEORGE A. J. HAINSWORTH.

Witnesses:

WM. M. DE Lone, ROBERTA RININE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G.