US2214835A - Fastening-inserting machine - Google Patents

Description

Sept. 17, 1940. J, T. LANCASTER ,8

FASTENING-INSERTING MACHINE Filed Nov. 7) 1939 3 Sheets-Sheet l wfA/vg/v TUQ 'r M W M $4M J. T. LANCASTER FASTENING-INSERTING MACHINE Sept. 17, 1940.

Filed Nov. 7, 1939 s sheets-sn er 2 //v vgA/ mm 2 7: 51M

Sept. 17, 11940.

,1. T. LANCASTER FASTENING-INSERTINQ MACHINE;

Filed Nov. '7, 1939.-

Sheets-Sheet 3 Patented Sept. 17, 1940 UNITED STATES FASTENING-INSERTING MACHINE John '1". Lancaster, Newton, Mass., assignor to United Shoe Machinery Corporation, Borough of Flemington, N. J], a corporation of New Jersey Application November 7, 1939, Serial N 0. 303,246

20 Claims.

, My invention relates to machines by which nails or other fastenings may be inserted for securing work-pieces. An example of work for which the machine is well adapted is the attachment of heels to shoes. cerned especially with the delivering of the fastenings to the support for the work in preparation for the inserting operation.

In Letters Patent of the United States No. '1,'785,928,' Benjamin, December 23, 1930, is disclosed a heel-attaching machine, in which nails are delivered to the passages in a work-supporting jack by a slide carrying a nail-holding block .and arranged to reciprocate in the machineframe between a nail-receiving position and a I position in which the nails are delivered to the jack. The slide is driven through slipping clutch mechanism, which urges it against stops at its opposite extremes of travel. The discharge of the nails into the support from the block is controlled by a retaining shutter, normally closed by a spring and operated during the travel of the load- -er-block by its contact with a relatively fixed point. It is an object of my invention to increase, by the use of simple mechanism, the

smoothness and positiveness of action of an organization of this character.

As a feature by which this end is gained, my improved loading or fastening-transferring mechanism combines with a reciprocatory carrier for fastenings, a rotatable shaft, a cam normally 1 loose upon the shaft and connected to the carrier to' control its reciprocation constantly, clutch -mechanism for causing the connection of the -35 cam to the shaft, and a member movable by the operator to govern the clutch mechanism. By this means, upon engagement of the clutch by the operator, the cam mechanism advances and retracts the transferring mechanism with exactly the desired timingjwholly without shock tending to displace the fastenings, and minimizing Wear which would cause variable action. In the particular form of the invention herein disclosed, the clutch mechanism includes a latch movable upon the cam to either free or engage a driving connection to the shaft, this clutch being governed by its engagement with a cam upon a lever movable by the operator.

As another feature of the invention a member, by which fastenings for use in an inserting machine may be retained temporarily or released as to their relation to passages in a fastening-car- 'rier, is moved under the power of the machine when the carrier is at rest withits passages registering with those in the. work-support of the ma- The invention is conpresented to the passages in the support. 1 power-movement of the retaining member is prefchine. Because of this complete freedom from movement at the time of fastening-delivery, the j two sets of passages may be in exact alinement during the entire delivery-period, and there is no opportunity for the fastenings to be incorrectly 5 The erably effected by a rotatable cam. I have illustrated herein a slide guided to reciprocate in the frame of the machine and carrying a loaderblock having nail-receiving passages, a slide guided upon the loader-slide and provided with a shutter controlling the loader-block-passages, and a rotatable cam acting upon the shutter-slide through a lever fulcrumed upon the frame. There are thus furnished, in connection with the feature previously mentioned, cams for actuating f both the carrier or loader and the retaining member or shutter, which cams may be in the form of grooves in a disk. This disk may be normally 'loose upon a rotatable shaft and controlled by the operator through clutch mechanism, as already indicated.

In the accompanying drawings,

Fig. 1 shows a top plan view of one form of my :5

, invention as it would be applied to a heel-attaching machine;

Fig. 2, a front elevation thereof, including the jack of the machine;

Fig. 3, a side elevation of the parts of Fig. 2, with the addition of a work-holddown co-operating with the jack;

Fig. 4, a sectional detail of the clutch mechanism on the line IVIV of Fig. 1; and

Fig. 5, a detail in perspective of the latch-controlling cam upon the starting lever.

There appears in the drawings, elements. of the nail-transferring or loading mechanism of a heelattaching machine, which machine may resemble, generally, that of the previously mentioned patent. These elements include a frame-column 10, at the front of which is mounted a work-supporting jack l2, having a set of vertical passages I4 containing reciprocatory drivers l6. To these passages is to be delivered a load of nails N, the heads of which will rest upon the upper ends of the drivers in preparation for being inserted through the heel-seat of a jacked shoe S to secure thereto a heel H. During this operation, abutments I8, carried by a vertically movable clamping head, hold the Work against upward displacement under the influence of the nail-driving force. Before the jacking of the shoe, delivery of the nails to the passages I4 is made by a loaderblock secured at the forward extremity of a .55

slide 22, guided in the column ID for horizontal reciprocation. The nails are carried in vertical passages 24 in the block and retained by a shutter 26 movable against the lower surface of said block. The shutter is normally held across the block-passages, but may be moved from beneath the block for the delivery of the contained nails. To the block-passages nails are supplied, when the block is in its rearward position, from an unillustrated distributor, through tubes 28 and a foot-plate 30, the discharge being controlled by the customary perforated shutter 32 slidable beneath the foot-plate. This shutter 32 may be moved to bring the openings through it into alinement with the foot-plate-passages, so nails may fall into the loader-block-passages, by such a controlling mechanism as that of Letters Patent of the United States No. 1,947,770, MacKenzie, February 20, 1934. To transfer the load of nails in the block 20 to the passages M of the jack, the slide 22 is reciprocated under the control of an operator-actuated lever 34, through gearing G, later to be described in detail, from a shaft 36 journaled horizontally across the frame-column. The shaft is driven continually from the main power-shaft of the machine by way of a vertical shaft 38, worm-gearing 40, a horizontal shaft 42 and worm-gearing 34.

Now considering the elements more closely relating to this invention, the gearing G includes .a rack 55 formed at the under Side of the loaderslide 22 and having meshing with it a gear 52, fast upon one extremity of a sleeve 5% rotatable about the shaft 36. At the opposite end of the sleeve a pinion 56 is secured, this meshing with gear-segment 58 free to turn about a spindle 68, which is mounted to oscillate upon the column ii]. Rotatable upon the outer side of the segment is a roll 62 lying in a cam-groove 66, formed in a disk 66 surrounding the shaft 36. The contour of the groove is preferably such, that from its resting position beneath the foot-plate 39, the :block 26 with its load of nails will be advanced rapidly until it approaches the top of the jack i 2. Then its movement is slowed, and it is brought to rest with its passages 2 in registration with the jack-passages i l and is held until the contained load of nails has been discharged into said jack-passages. This having been accomplished, the cam-groove reverses the travel of the loader-block, so it is rapidly returned to it initial position.

The shutter 26 of the loader-block is reciprocated in the proper time-relation tothe block movement, by means which will now be described. This shutter has a rearward extension H1 arranged to slide in a longitudinal groove in the loader-slide 22. When the loader-block is beneath the foot-plate 39 with its passages 25 registering with the nail-supplying passages in the foot-plate, the shutter 32 of which has been opened as previously indicated, the shutter 26 of the loader-block is closed by its engagement with a stop-screw l2 threaded horizontally through the frame. This position of the shutter is more definitely determined by a plunger i4, movable vertically in the loader-slide 22 and forced up by a leaf-spring i6 engaging itslower end. With the shutter in its initial nail-retaining relation, the rounded upper end of the plunger enters a depression it in the shutter-slide it. This latching means willyield, when the slide it is moved positively, to release the nails. A load of nails is thu received and temporarily retained in the block-passages at the opposite extreme of m6 formed upon the lever.

travel of the loader-block, when it has come to rest under the control of the cam-groove 64 with its passages vertically alined with the jack-passages M. The shutter 26 is moved in the follow-' ing manner to cause the opening of the blockpassages. The spindle El] has secured to its inner extremity an arm 80, which at its free end is pivoted to one arm of a bell-crank-lever 82 turning upon a fixed fulcrum 84. The other arm of the bell-crank extends downwardly to a point just above the shutter-slide '50, where it has a lateral projection 86 lying above said slide and in horizontal alinement with an upward projection 88 therefrom. Fast upon the outer end of the spindle BB is an arm 90 extending over the periphery of the disk 66 and then downwardly, carrying at its inner side a roll 82 lying in a camgroove 94 in the disk. This groove is so formed that, while the loader-block is traveling under the influence of the cam-groove 64, the projection 86 will remain inactive. When, however,

' the loader-block has arrived over the jack i2 and is held stationary by'the cam-groove 64, the groove M, through the arms 9% and 80, acts upon the lever 82 to urge its projection 86 against the shutter-slide-projection 88, which ha reached a point adjacent to said projection 86. The shutter-slide is thereby moved to the left, as viewed in Fig. 3'of the drawings, and thus held.

The movement is sufficient to carry it from beneath all the block-passages, whatever may be the nailing design. The load of nails, therefore, is released to fall into the jack-passages M.

To initiate an operating cycle of the loading mechanism, the operator depresses a handpad 98 of the lever 3t. This lever moves about its fulcrum liw'frorn a raised position, normally maintained by a tension-spring N12 to an extent permitted by contact with the'shaft 36 of the upper end of a slot Hit in the. wall of a casing The descent of the lever causes clutch mechanism C (Fig. 4) to join the constantly rotating shaft 36 to the cam-disk 66. When the lever 34 is raised by the spring 882 to a point determined by engagement of the lower extremity of the slot QM with the shaft, a cam-face H0 (Fig. 5) upon a disk H2, attached to the inner face of the lever-casing, so holds a latching member i M, that, through a space H6 in it, a projection H8 secured to the shaft'36 may revolve freely. The latch is guided to slide horizontally in the hub of the cam-disk; At the outer end of the latch-is a surface I20, which,- by its contact with thecam-surface H0, determines the position of the space 5 I6, this contact being maintained by an expansion-spring I22 seated in a bore in the disk-hub and bearing against the latch. The normal relation of'the disk 66, and its respective loader-actuating and by engagement of the side wall of the latch adjacent to the surface HQ with a radial wall I24, which projects from the highest or resting point of the cam-surface H6. limited radial extent, that upon depression of the hand-lever said wall leaves the latch H4, so the latter is urged by its spring I22 against the low portion of the cam-surface Hi]; This carries the latch-space i 56 away from the shaftprojection 5 I8, and, as said projection is revolved by the shaft, it strikes the side wall of the latch and turns the cam-disk through 360. Thi movement is stopped when the high point of the The wall E24 is of such shutter- actuating grooves 64 and 94, is fixed cam-surface Hi] again has so located the latch I tremity of which is joined to a lever 1,32.

that the shaft-projection travels through. the latch-space.

To outline briefly the operation of my improved loading mechanism for fastening-inserting machines, there having been accomplished the attachment of a heel H to a shoe S by a load of nails N, previously delivered to the jackpassages M, the operator removes the work from the jack and depresses the pad 98 of the lever 34 in a direction parallel to the plane of rotation of the cam-disk 66. By the action of the lever-cam member H2 upon the latch H4 of the clutch mechanism C, the cam-disk is caused to be driven through a complete turn by the constantly rotating shaft 36. In the resting position of the disk, its cam-groove 64, by its action upon the gearing G, is holding the loader-block with its passages 24 alined with the passages in the foot-plate 30. The shutter 32of the footplate has been opened and a load of nails, which it supported, delivered to the loader-block-passages. The picker mechanism of the distributor of the heel-attachingmachine may be prepared for supplying each load of nails tothe foot-plate through the tubes 28, by the downward movement of a rod 130, the lower ex- This lever is shown as fulcrumed about the spindle 60 and carries a roll I34 contacting withthe periphery of a cam I36 fast upon the sleeve 54. The lo'ader-block-shutter 26 is at this time closed because of its engagement with the stopscrew #2. As the cam-disk 66 rotates, the effect of the groove 64 is to start the forward travel of the loader-block, accelerate it to a relatively high speed, then reduce it as it approaches the jack l2, and bring it to a full stop with its passages in registration with the jack-passages l4. During this advance of the loader-block, the projection 36 upon the lever 82, controlled by the cam-groove 94, is held stationary, but, when the loader-block is at rest above the jack and the shutter-slide-projection 88 is in proximity to the lever-projection 86, the groove 94 moves said lever-projection against the slide-projection, thereby opening the shutter to allow the nails N to drop into the jack-passages. Finally, the cam-groove 64 effects the rapid return of the loader-block to its initial position, and the shutter is closed as it contacts with the stop-screw l2 and is retained against accidental displacement by engagement with its slide-depression 78 of the plunger 14. After actuation of the hand-lever 34 it was at once freed by the operator, and when the cam-disk has made its full turn the lever-cam-surface H so shifts the latch H4 that thecam-disk 66 is disconnected from the driving shaft and stopped in a predetermined position, with the loading mechanism in its normal relation ready for the succeeding cycle.

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

1. Fastening-transferring mechanism comprising a reciprocatory fastening-carrier, a rotatable shaft, a cam normally loose upon the shaft and connected to the carrier to control its reciprocation constantly, clutch mechanism for causing the rotation of the cam with the shaft, and a member movable by the operator to govern the clutch mechanism.

2. Fastening-transferring mechanism comprising a reciprocatory fastening-carrier, a rotatable shaft, a cam normally loose upon the shaft and connected to the carrier to control for causing the rotation of the cam with the shaft, and ,a lever movable by the. operator and provided with a cam for governing the clutch mechanism. 7

3. Fastening-transferring mechanism comprising a reciprocatory fastening-carrier, a rotatable shaft having a projection, a cam normally loose upon the shaft and connected to the carrier to control its reciprocation constantly, a latchmovable upon a cam to free or engage the shaft-projection, and a member movable by the operator to actuate the latch.

4. Fastening-transferring mechanism comprising a reciprocatory fastening-carrier, a rotatable shaft having a projection, a cam. normally loose upon the shaft and connected to the carrier to control. its reciprocation, a latch. movable upon a cam to free or engage the shaftprojection, and a lever movable by the operator and provided With a cam engaging the latch.

- 5.-Nail-loading mechanism comprising a reciprocatory loader-block, a rotatable shaft having a projection, a cam normally loose upon the shaft and connected to the carrier to control its reciprocation, a latch slidable upon the cam along the shaft and having a space through Which theshaft-projection may pass, and a lever movable in a direction parallel to the plane of rotation of the first cam and provided with a cam engaging the latch.

6. In a fastening-inserting machine, fastening-transferring mechanism comprising a movable carrier having fastening-holding passages, a member movable upon the carrier to retain fastenings in the passages or release them therefrom, and means movable under the power of the machine to actuate the retaining member.

'7. Fastening-transferring mechanism comprising a movable carrier having fastening-holding passages, a member movable upon the carrier to retain thefastenings in the passages or to releasev them therefrom, and a cam movable to actuate the retaining member.

8. In a fastening-inserting machine, fastening-transferring mechanism comprising a movable carrier having fastening-holding passages, a member movable upon the carrier to retain fastenings in the passages or release themv therefrom, and a cam rotatable under the power of the machine to actuate the retaining member.

9. Fastening-transferring mechanism comprising a movable carrier having fastening-holding passages, a member movable upon the carrier to retain the fastenings in the passages or to release them therefrom, an actuating member into co-operation with which the retaining member moves, and means for moving the actuating member to cause the release of the fastenings from the passages.

10. Nail-loading mechanism comprising a movable loader-block having nail-holding passages, a nail-retaining shutter movable upon the loaderblock across the ends of the passages and provided with an extension, a member into co-operation with which the extension is moved by the loader-block, and means for moving the member to engage the extension.

11. In a fastening-inserting machine, a worksupport having fastening-receiving passages, a carrier having fastening-passages and movable from a fastening-receiving position to a delivering position with its passages registering with the passages in the Work-support, a nail-retaining member movable across the carrier-passages, and means movable to actuate the retaining member and release the fastenings only when the carrier is at rest with its passages in registration with those of the work-support.

12. In a fastening-inserting machine, a worksupport having fastening-receiving passages, a carrier having fastening-passages and movable from a fastening-receiving position to a delivering position with its passages registering with the passages in the work-support, a nail-retaining member movable across the carrier-passages, and means movable under the power of the machine to actuate the retaining member and release the fastenings only when the carrier is at rest with its passages in registration with those of the work-support.

13. In a nailing machine, a work-support having nail-receiving passages, a loader-slide movable from a nail-receiving position to a delivering position over the work-support, a shutter-slide movable upon the loader-slide across'the ends of the passages, and a cam movable to actuate the shutter-slide.

14. In a nailing machine,a work-support having nail-receiving passages, a loader-slide movable from a nail-receiving position to a delivering position over the work-support, a shutter-slide movable upon the loader-slide across the ends of the passages, a lever into co-operation with which the shutter-slide moves, and means for oscillating the lever to actuate the slide.

15. In a nailing machine, a work-support having nail-receiving passages, a loader-slide'movable from a nail-receiving position to a delivering position over the work-support, a shutter-slide movable upon the loader-slide across the ends of the passages, a lever into co-operation with which the shutter-slide moves, and a rotatable cam by which the lever is oscillated for engagement with the shutter-slide.

16. In a nailing machine, a frame, a work-support mounted upon the frame and having nailreceiving passages, a slide guided for reciprocation in the frame, a loader-block mounted upon the slide and having nail-receiving passages movable thereby into'registration with the support-passages, a slide guided in the loader-slide and provided-with a shutter controlling the loader-slidepassages, and a cam rotatable upon the frame for actuating the shutter-slide.

' 17. In a nailing machine, a frame, a work-support mounted upon the frame and having nailreceiving passages, a slide guided for reciprocation in the frame, a loader-block mounted upon the slide and having nail-receiving passages movable thereby into registration with the support-passages, a slide guided in the loader-slide and provided with a shutter controlling the loader-slidebeing arranged respectively to actuate the carrier and the retaining member.

20. Fastening-transferring mechanism comprising a reciprocatory fastening-carrier, a reciprocatory fastening-retaining member co'operating with the carrier, a rotatable shaft, a cam-disk normally loose upon the shaft and connected to the carrier to control its reciprocation constantly and the retaining member intermittently, clutch mechanism for causing the rotation of the camdisk with the shaft, and a member movable by the operator to govern the clutch mechanism.

JOHN T. LANCASTER.

Images