US1738574A

US1738574A - Fastening-inserting machine

Info

Publication number: US1738574A
Application number: US144364A
Authority: US
Inventors: Gouldbourn Joseph
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1925-11-06
Filing date: 1926-10-26
Publication date: 1929-12-10
Anticipated expiration: 1946-12-10

Description

Dec. 10, 1 929. J GQULDBOURN 1,738,574-

FASTENING INSERTING MACHINE Filed Oct. 26, 1926 3 Sheets-Sheet l Dec. 10, 1929.

J. GOULDBOURN .FASTENINfi INSERTING MACHINE Filed Oct. 26, 1926 3 Sheets-Sheet 3 chine.

Patented Dec. i9, 1%29 JOSEPH GOULDBOURN, 0F LEICESTEE,ENGLAND, ,ASSIGNOE TO UNITED SHOE MA. 7

GHINERY CORPORATION, OF PA'IEESON, JERSEY, A. CORPORATION OF NEW JERSEY FASTENENG-INSERTING MACHINE Application filed October 26, 1926, Serial No. 144,364, and in Great Britain November 6, 1925.

This invention relates to fastening inserting machines and is illustrated herein as embodied in a loose nailing machine of a well known type having a swinging head carrying a reciprocating awl arranged to penetrate the work andthen to feed the work as the head swings, and a spring operated driver arranged to insert nails in the holes formed in the work by the awl. I

Machines of this type, of which the machine disclosed in United States Letters Patent No. @90524, granted January 24, 1893, on an application of Louis Goddn, is an eX- ample, have been for many years and are now used extensively for various purposes in the manufacture of boots and shoes.

As machines of this type have heretofore been built, it has been found that if they are speeded up beyond about 350 or 375 revolutions per minute the motion of the swinging head is too violent, causing excessive vibration and consequent wear and interfering with, or at least making diflicult, the control of the work by the operative as it is fed through the machine. In this connection it should be remembered that the swinging or' moving head of such a machine is heavy and that, as these machines have been built, the raceway and, in many instances, the hopper from which nails are supplied to the raceway, swing with the head of the machine, thus increasing the mass of metal which must be moved rapidly back and forth and the direction of movement of which must be reversed twice in each cycle of operation of the ma- It is. accordingly, an object of the present invention to provide an improved fastening inserting machine of the type having a moving head carrying an awl arranged to penetrate the work and, as the head is moved, to feed the work, which is so organized that it can be operated at a substantially higher speed than is practicable with such machines as heretofore constructed.

In order to enable such a machine to operate smoothly and satisfactorily at a high speed, for example in the neighborhood of 500 revolutions per minute, I have, as illustrated herein, provided a swinging head loose nailing machine so organized that the transverse back-and-forth movement of the swinging head of the machine occupies not substantially less than about one-half of the cycle of operation of the machine. Preferably, the work feeding movement of the swinging head occupies rather more than one quarter, as illustrated one hundred degrees, of the cycle of operation. ment occupies, relatively speaking, so much more of the cycle of operationthan has been the case heretofore in the operation of ma chines of this type that the machine may be speeded up very considerably without excessively speeding up the movement of the swinging head. In order 'to do this I have found it necessary to redistribute in the cycle of operation of the machine the motions of various other parts as more fully hereinafter set forth. 7 I r I /Vhile the invention is disclosed asembodied in a swinging head fastening inserting machine, it should be understood that it is not necessarily limited to machines having that kind of head movement.

With the above and other objects inview the invention will now be described with ref- Thus'the head swinging move I erence to the accompanying drawings of an Fig. l is an end elevation of themechanism of Fig. 3 with the main cam shaft of the machine in cross section; and

Fig. 5 is a cross section on an enlarged scale on the line VV of Fig. 3.

Inaccordance with the usual construction of swinging head fastening inserting inachines the illustrated machine is provided with a main cam shaft 10 concentric with the 7 bar 20 is caused by the engagement of a lifting cam 24: carried by shaft 10 with a lifting block 26 clamped to driver bar 20. A spring 28 anchored at one end to a stationary part of the head'of the machine and connected at the other end by a link 30 with driver bar 20 forces the driver bar and driver downwardly when cam 2epasses out from under block 26, thus driving a nail into the work, and is compressed as cam 24 lifts the driver bar 20. Also carried by the swinging head 12 is a raceway 82 the passage of nails from wvhich to the throat 3 of the machine is controlled by a separator 36 which is also operated from a cam upon shaft 10; The above parts and theirrelation to each other, except for the iming of their motions and the form and arrangement ofthe cams byv which they are driven, maybe and, as illustrated, a e, of the character set forth in said Letters Patent No, 490,62 towhich reference may be had for a fuller description thereof. To support the w rkas the fastenings are inserted the machine is provided with hornSS arranged to clamp the work against a presser plate 40 which limits its upward movement. The horn 38 is moved downwardly prior to the feeding: movement of the swinging head and awl to release the pressure from the Work and upwardly to clamp the work against pressure plate 40. prior. to the insertion of each astening by suitable release mechanism, for example as disclosed in Letters Patent of the United States No. 265,227, granted September 26, 1882, on an application of Louis Goddu,

7 also driven fr m cam shaft 10.

1 velocity in the illusY-r g head is such en at ine movement of the swingi' that the machine may be ch cr ased soeed of about 500 revolutions per. thout substantially in creasing the minute W 5 compared with the old slower at which the we is fed through machines 'sive wear of the'swinging head or other parts of the machine and interference with the control of the work by the operative are avoided.

lVith this purpose in view the back-andforth movement of the swinging head of the illustrated machine is, as shown at D in the cam diagram of Fig. 2, distributed through about 180 of the cycle of operation of the machine, the feeding movement occupying about 100 and the return movement about 7 5. Inorder to devote this large portion of thecycle of operation of the machine to the movement of the swinging head the speed of the reciprocating motion of the awl has been relatively increased, so that. the descent and ascent of the awl each occupies less than 420 of the cycle, as shown at B in F ig. 2. Also, the downward movement of the horn as shown at C to release the pressure upon the work begins substantially simultaneously with, or even a little before, the completion of the downward movement of the awl and the feeding movement of the head starts somewhat before the horn reaches its lowermost position and continues during something like one half of'the upward pressure applying movement of the horn. Moreover,

the withdrawal of the awl from the work begins long before the completion of theupward movement of the horn, the two ending substantially simultaneously. These movements are clearly shown in the timing diagram of Fig. 2 in which A represents the driver timing, B the Work penetrating and withdrawing movementof the awl, C the downward pressure releasing ,and upward pressure applying movement of the horn or work support, D theswinging movement of the head, E the separator movement and F the movement of the brake applying leverwhich,

however, is idle except-toward the end of the last cycle of operation when the machine is being brought to rest; in considering this diathe distance that that shaft moves after the if I clutch is thrown out and the brake applied. ated machlne the timing of Referring to 2, if the machine comes to Therelation'of the timing of the various parts of the illustrated machine will best be understood from-the following table taken in connection with the diagram of Fig. 2.

' Angle from point of driver descent 20Awl begins to descend. -Awl fully down. 55Horn begins to drop. Separator begins to move back to inoperative position. 100 Feed begins. 110-Horn down. 115Separator back. 155Driver begins to rise. 185-Horn begins to rise. 200Feed ends. 215Separator begins to move forward to separate. 225Awl begins to rise. 240-Separator dwells. 245Awl begins to return for new feed. 255Horn fully up. 260Awl fully up. 270 Separator recommences forward movement. 300-Driver up. 3O0Brake pegins to come on (in last cycle only 310-Separator fully forward. 320Awl returned to new feed position. 320Brake on (in last cycle only). 360-Driver falls.

shown particularly in Figs. 3, a and 5. T hus,

the camshaft 10 of the machine has rotatably mounted upon it a driving pulley v50 which,

when the machine is to be driven, ismoved axially of the shaft, to cause a clutch surface 52 formed thereon to engage with a corresponding clutch surface of a clutch member 54 fixed upon shaft 10. A spring 56 surrounding shaft 10 bears, at one end uponv a collar 58 secured to shaft- 10 and at the other upon a sleeve60 keyed to shaft 10 and forming a bearing for pulley 50. At the opposite end of the sleeve. 60- is a washer 62 against which bear the ends of a plurality of rods 64 mounted in the hub 65'of the clutch member 54. The rods 6.; also bear upon the rear of a wedge member or block 66 slidably mounted on shaft 10 and engaging a wedge member 68 mounted. for movement trans:- versely of shaft 10 upon a yoke member 70. Thus. whenyoke member 70 is moved downwardly, wedge member 68 will force wedge member 66 to the left, as viewed in Fig. 3, thus pushing rods 64$,washer 62, sleeve 60 and pulley 50 to the left against the compression of spring 56 and disengaging the clutch surfacesof

clutch members

50 and 54 so that shaft 10 is no longer driven. On the other hand. when yokemember 70 is moved upwardly theupward movement of wedgemember 68 permits-wedge member 66 to be moved at the left-hand end of which is a hardened latch block 86. Fulcrumed concentrically with'lever 74: is a second lever 88 extending approximately vertically and carrying at its upper end a cam roll 92 operating in a cam track formed in a cam carried by the shaft 10. At its lower end lever 88 is provided with a hardened latch block 94 arranged when the machine is at rest to engage with latch block 86, as shown in Fig. 4, thus holding lever 74 in the position shown in that figure with the yoke 70 depressed so that the clutch is disengaged. A tension spring 96 tends to rock lever 74. in a counter-clockwise direction, as shown in F at, while a second spring 98 tends to rotate latch'member 84 in a clockwise direction. A rod 100, movable upwardly by a" treadle 102 and downwardly by a spring 104 when the treadle is released, is moved upwardly againstthe tail of latch 84'when the machine is to be started. Thus block 86 is moved downwardly so that lever 74 is released and is rotated in a counterclockwise direction by spring 96. This forces yoke 70 and wedge 68 upwardly, permitting movement of wedge 66 to the right, as viewed in Fig. 3, under the influence of spring '56 so that, as hereinbefore set forth, shaft 10 is driven by the clutch. When the treadle is released, however, to stop the machine, the

rod 100 descends and latch member 8-1 is rotated in a clockwise direction by spring 98. Lever 88, which oscillates idly while the machine is running until after the treadle is released, moves in such a path that block 94 engages block 86 at a definite point in the cycle of operation after rod 100 has been lowered, so that lever 74 is rocked by lever 88,

forcingyoke 70 and wedge member 68 down,- wardly and thereby moving'wedge 66 to the left, compressing spring 56 and disengaging the clutch members. I

In order to bring the machine to rest promptly after the clutch is disengaged a brake band 106 is provided engaging a brake drum 108 fast upon cam shaft 10. Brake band 106 engages drum 108 through almost lts entire periphery. In order to tighten brakeband 106 upon drum 108 the left end of brake band 106 (as viewed in Fig. t) is mounted upon an eccentric 110 (Figs. 3 and 4c) fixed to a sleeve 112 projecting from and coaxial with the hub of clutch'lever 74 so that as the clutch lever 74 is rocked to disengage '55 Y ly one-half of the cycle of operation of the the clutch, eccentric 110 is rotated to move the left-hand endof brake band 106- into engagement with drum 108. The other end of brake band 106 is connected by an adjustable rod 114 to clutch lever 7 4 so that as the clutch lever moves to disengage the clutch it will alsopull the right-hand end of brake band 106 into engagement with brake drum 108.

Since the lever 88 is operated by a closed cam the brake is positively applied and may be adjusted by adjusting the connection of brake band 106 to rod 114:.

To release the brake and permit cam shaft 10 to be rotated, if desired, while the machine is at rest, the end of the rod 114 remote from brake band 106 is mounted on an eccentric stud 116 which may be rotated by a hand lever 118 connected thereto provided for that purpose. Eccentric stud 116 is provided with a pair of notches or recesses 120, 122 (Fig. 5) either one of which may be engaged by a spring pressed plunger 124 mounted in the lever 74 to hold the stud 116 in either brake applying or brake'releasing position. To prevent accidental engagement of the clutch when the brake is-thus released eccentric stud 116 has fixed to it a cam or stop member 125 which, when the studis rotated to release the brake, is moved against a fixed abutment 126 to prevent movement of clutch lever 74in a direction to allow the clutch members to engage.

The clutch operating mechanism disclosed in this application is not claimed herein since it forms the subject-matter of Letters Patent of the United States No. 1,696,535, granted December 25, 1928 on an application filed in my name.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. A cyclically operating machine for inserting fastenings in boot and shoe parts having a transversely moving head, an awl and a driver carried by said head for transverse movement therewith and reciproca-ble in paths substantially at right angles to its transverse movement to cause the awl to penc trate the work and cause the driver to insert moving with the head, feeds the w0rk, said means being arranged to cause the transverse movement of the head to occupy substantialsmachine whereby the machine may be run at a relatively high speed without speeding up the feeding movement of the work through the machine.

2. A cyclically operating machine for in serting nails in boot and shoe parts having a transversely swinging head,an awl carried by the swinging head and mounted for transverse work feeding movementw'ith the head awl in the work, a raceway carried by the head and swinging therewith arranged to supply fastenings to be inserted by the driver in the holes formed in the work by the awl, and a cam operatively connected to the head to swing the head and the raceway back and forth transversely of the machine, said cam being formed and arranged to cause said swinging movement of the head and the race way to occupy substantially one-half of the cycle of operation of the machine. 1

3. A cyclically-operating machine for inserting fastenings in boot and shoe parts having a transversely moving head, an awl carrier reciprocable in a guide carried by the head, an awl carried by said carrier and arranged to penetrate and withdraw from the work, a driver bar also reciprocable in a guide carried by the head, a driver carried by the driver bar and arrangedto insert fastenings in the holes formed in thework by the awl, and means for moving the head back and forth transversely of the machine to cause the awl to feed the work and to return, arranged ing a transversely swinging head, an awl carried by'theswinging head for transverse movement therewith and reciprocable in a path substantially at right angles to its transverse movement to penetrate the work, a driver carried by the swinging head arranged to insert fastenings in the holes formed by the awl in the work, a cam, and connections from the cam to the head to cause the cam to swing the head'transversely of the machine whereby the awl, moving with the head, feeds the work, said'cam and connections being formed and arranged tocause the feeding movement of the head and awl to occupy rather more than a quarter of the cycle of operation of theimachine. V

5. A cyclically operating machine for ins serting nails in boot and shoe parts having a transversely swinging head, anawl carriedby the swinging head for transverse work feeding movement therewith and reciprocable in a path substantially at right angles to its transversemovement to penetrate and withdraw from the work, a driver also carried by the swinging head arranged to insert nails in the holes formed by the awl in the work, a'throat member carried by the swinging head and provided with a driver passage in alinement with'the driver, a raceway cararranged to conduct nails to the throat member, means for swinging the head transversely of the machine to cause the head by engage ment of the awl with the work to feed the work between the insertion of successive nails and to return the head between its feeding movements, said head swinging means being arranged to cause the feeding movement of the head to occupy substantially one hundred degrees of the cycle of operation of the machine whereby the machine may be driven at a relatively high speed without excessive.

wear of the head swinging parts and without interference with the satisfactory feeding of the work.

6. A cyclically operating machine for inserting fastenings in boot and shoe parts having a transversely moving head, an awl carried by said head for transverse back and forth movement therewith and reciprocable in a path substantially at right angles to its transverse movement to penetrate and withdraw from the work, a driver also carried by said head arranged to insert fastenings in the holes formed by the awl in the work, means for moving the head transversely of the machine to cause the head by engagement of the awl with the work to feed the work between the insertion of successive fastenings and to return the head between its feeding movements, said means being arranged to cause the transverse back and forth move ment of the head to occupy substantially onehalf of the cycle of operation of the machine whereby the machine may be run substantially faster than prior moving head fastening inserting machines without the speed of the feeding movement of the work through the machine being substantially changed.

7 A high-speed, cyclically operating machine for inserting fastenings in boot and shoe parts having a transversely swinging head, an awl carried by said head and mounted for transverse work feeding movement with the head and for reciprocation substantially at right angles to its transverse movement to penetrate and withdraw from the work, a driver carried by said head arranged to insert fastenings in the holes formed by the awl in the work, a shaft, and means operated thereby for swinging the head back and forth transversely of the machine arranged to cause said back and forth movement of the head to occupy substantially one-half of the cycle of operation of the machine and thereby to eliminate excessively fast swinging of the head and the vibration and wear incident thereto.

8. A cycl'cz operating machine for inserting fastenings in boot and shoe parts having a head, an awl carried by the head and mounted for transverse work feeding movement and for reciprocation substantially at right angles to its transverse movement to penetrate and vithdraw rrom the work, a

driver carried by said head arranged to in sert -=ii'astenings 1n the holes formed by' the a'wl'in'tho work, aro'ta'ting shaft, andm'e'ans operated thereby to give the awl its work feeding "movement ar-ranged to. cause the woi'lrfeeding movement of the awl to'occupy; not less ation of the machine.

9. A; cyclically operating machine for in? serting fastoningsfin boot and shoe parts haw ing ahead, an awl carried by said head and arranged to penetrate the work, then to move transversely of its work penetrating move-1.

ment to feed the work, then to withdrawfrom the work, and then to'move transversely in a direction opposite toits work feeding move; ment thereby returning to its starting position, a driver carried by saidhead and arranged to insert fastenings in the-holes formed by the awlin the work, a-rotating shaft, and a cam carried by the shaft arranged to give to the awl its transverse work feeding and return movementsformed to cause said work feeding and return movements to occupy togethersubstantially onehalf of the cycle of operation of the machine.

10. A. fastening-inserting machine having a transversely swinging head,an awl: and a driver carried thereby mounted for transverse work feeding movement withthe head and reciprocating work penetrating and withdrawing movement relatively to the head, an abutment arranged to limit movement of the work toward the awl and driver; a work support movable toward and from v the abutment and arranged to force the work against the abutment during the insertion of the awl in the work and during the driving; of the fastenin 's, and means for moving the: work support from the abutmentto release the pressure upon the work during thefe'ech head, an abutment arranged to limit move ment of the work toward the awl and driver, a work support movable toward and from the abutment and arranged to force the work against the abutment during the insertion of the awl in the work and during the driving of the fastenin s, and a cam for moving the work support from the abutment to release the pressure upon the work during the feeding movement of the awl and for returning the work support to pressure applying position arranged to start the pressure applying an one-quarter of the cycle of 0perreturn movement of the work support sub stantially before the start of the withdrawal of the awl from the work and to complete the withdrawal of the awl from the work not a substantially later than the completion of the pressure applying movement of the work support.

12. In a fastening inserting machine having a transversely swinging head, an awlcarried by the head and mounted for transverse work feeding movement with the head and for reciprocation substantially at right angles to its transverse movement to penetrate and withdraw from the work, a driver also carried by the head arranged to insert fastenings in the holes formed by the awl in the.

work, a cam connected to the head and arranged to swing the head transversely of the machine thereby causing the awl to feed the work between the insertion of excessive fastcnings, said cam being formed to cause the transverse back-and-forth movement of the head to occupy not less than substantially one-half of the cycle of operation of the ma- ':hine, an abutment and a work support between which the work is clamped during both the work penetrating movement of the awl and the insertion of fastenings in theholes formed by the awl, and means for moving the work support from the abutment to relieve the pressure upon the Work during the workfeeding movement of the awl and then to returnthe work support to pressure applying position arranged to'start the pressure applying return movement of the work support before the start of the withdrawal of the awl from the work and before the com pletion of the work feeding movement of the awl.

In testimony whereof I have signed my name to this specification.

JOSEPH GOULDBOURN.