US1759836A - Hook-setting machine - Google Patents

Description

May 27, 1930'. M. N. BRAY HOOK SETTING MACHINE Filed $118 24, 1929 5d Fig.4; Fig.5.Fig15.

Fig.2. Fig.3.

Patented May 27, 1930 EJNITED STATES PATENT oFFicE MELLEN N. BRAY, 013 BOSTON, MASSACHUSETTS, ASSIGNOR T TUBULAR RIVET 86 STUD COMPANY, 011' BOSTON, MASSACHUSETTS A CORPORATION OF MASSACHUSETTS HOOK-SETTING MACHINE Application filed June 24,

This invention relates to hook-setting machines and is herein disclosed as embodied in a machine comprising, among other features, a form of mechanism similar to that illustrated and described in U. S. Letters Patent No. 811,840 granted February 6, 1906, on application of P. R. Glass.

A machine of the type illustrated in part in the above-mentioned patent comprises an anvil carried by a vertically movable plunger, the anvil being formed to occupy the throat of a lacing-hook transferred to it from a. raceway, and being moved thereafter, by the plunger, to insert the barrel of the hook into the work and to upset and clench the inserted barrel against a complemental tool. These results are followed by retraction of the plunger from-the Work to place the anvil again in line with the delivery end of the raceway so that another lacing-hook may be transferred from the raceway to the anvil.

In a machine of the type under consideration, it is necessary to provide mechanism for retracting the anvil from the throat of the clenched lacing-hook prior to the motion by which the anvil is returned to its hook-receiving position adjacent to the delivery end of the raceway, since otherwise the head of the clenched lacing-hook wouldstand in its path and thus interfere with its return movement. Accordingly, the anvil and the plunger or other part by which the anvil is carried are formed to provide an articulated connection designed to permit the aforesaid retraction of the anvil from the throat of the clenched hook.

Although anvils for the purpose above set forth are made of hardened steel, it is necessary toreplace them with new ones at frequent intervals because of the harsh wear to which they are subjected by steel lacinghooks and the heavy pressures required to clench such hooks. The frequent substitutions of new anvils for worn ones constitute a considerable itemof expense, a large proportion of which is due to the fact that as hereto fore constructed and as. illustrated in the abovementioned Letters Patent No. 811,840, each anvil has been provided with a lug by 0 which an operating member may retract it from the throat of the clenched hook. The anvil is a thin, fiat plate which, considered individually, may be made at small expense, but when, as illustrated in said Letters Patent, the anvil and the lug by which it is coupled to an operating member are integral a new coupling element must be furnished with each new anvil.

In view of the conditions above set forth, an object of the present invention is to provide an improved construction that will reduce the expense incidental to substituting new anvils for worn ones.

In accordance with this object a feature of the invention consists in an improved combination comprising an anvil and a coupling member formed with cooperative interlocking portions and registering holes, a locking member formed to slide in said holes to lock the anvil. to the coupling member, and resilient means arranged to maintain the locking member in locking position. This construction provides for detaching a worn anvil and substituting a new one without discarding the means by which the worn anvil is coupled to its operating member. Moreover, and as herein illustrated, this feature provides for making the anvils of simple flat plates of generally rectangular configuration without any Serial No. 373,314.

connecting lugs that would add to their cost of manufacture.

In the illustrated construction, the interlocking portions of the anvil andthe coupling member are so formed as to provide for inserting the anvil through the coupling member and withdrawing it therefrom without disassembling thecoupling member and the operating member. As herein illustrated the locking member and the resilient means above referred to are combined structurally to form a detachable key.

Referring to the accompanying drawings,

Fig. l is a left side elevation of a portion of a hook-inserting machine provided with means embodying the novel features of the present invention;

Fig. 2 is a front elevation of an assemblage including an anvil, its coupling member and a preferred form of detachable key compris ing a locking pin and a resilient clip permanently secured thereto;

Fig, 3 is a top plan View showing the anvil and the coupling member in assembled relation and showing the detachable key at an intermediate stage of attachment;

Fig.4 is a top plan view of the anvil alone;

Fig. 5 is a top plan view of the coupling member alone; 1

Fig. 6i's a top plan View of the key;

Fig. 7 is a side elevation of the key as shown in Fig. 1;

Fig. 8 is a front elevation of the key as shown in Fig. 2; and

Fig. 9 is a vertical section of the anvil and a lacing-hook seated thereon.

The frame 10 of the machine is provided with bearings for a vertically movable plunger 12 provided with a head 14. This head formed with horizontal confronting grooves to receive opposite margins of a flat hook-supporting anvil plate 16, which margins have straight parallel edges 17. One of said grooves is indicated at 18 in Fig. 1, Lacing-hooks are supplied to the anvil plate 16 by a raceway a portion of which is indicated at 20. Suitable mechanism (not shown) moves the plunger 12 up and down. The downstroke places the anvil 16 in hookreceiving position in register with the lower end of the raceway and the up-stroke causes the anvil to-insert a lacing-hook into an article of work supported by but overhanging a punch-bed 22. A clenching tool 24 aflixed to a vertically movable plunger 26 cooperates with the anvil 16 to insert and olench the barrel of the lacing-hook. The clenching tool 24 is provided with a central pilot portion 28 that cooperates first with the punch-bed 22 to punch a hole in the article of work for the reception of the barrel of the hook. Suitable mechanism (not shown) is provided for moving the plunger 26 and the tool 24 laterally'from the punch-bed 22 to a position over and in register with the anvil '16 for the purpose of feeding the article of work and thereby spacing successive lacing-hooks inserted into the latter.

For the purpose of maintaining a lacing hook 15 in the desired position on the anvil 16, as'shown in Fig. 9, the anvil is provided, as heretofore, with a notch 30 (Figs. 3 and 4) to be occupied by the neck that connects the body and the head of a lacing-hook. In

accordance with common practice, the machine is provided with mechanism for retracting the anvil 16 from the throat. of' a clenched hook so that the head of the hook will not obstruct the subsequent downward movement of the anvil to the raceway.

The illustrated mechanism for thus re tracting the anvil 16 is substantially like the ters Patent N b.

correspondin mechanism shown in said Let- 811,840. It comprises an operating member 50 telescopically connected to a lever 36 mounted on a fulcrum pin 40. The lever 36 is provided with a roll 38 arranged to run on a cam 32, and is provided with a bore 42 containing a compression spring 44 and a plunger 46 against which the spring acts. The lower end of the plunger 46 bears on a surface 48 of the frame 10 to maintain the cam-roll 38 in contact with the cam 32. The telescopic connection between the lever 36 and the member 50 enables the latter to partake of the up-anddown movements imparted to the anvil 16 by the plunger 12.

The anvil 16 is connected to the operating member 50 by a coupling member 52 from which the anvil is readily detachable. In former constructions the elements corresponding to the anvil 16 and the member 52 have been integral, and it has therefore been necessary, when discarding a worn or broken anvil, to discard also itscoupling element. According to the present invention the anvil 16 and the coupling member 52, while functionally integral, are structurally separable so that whenever it becomes necessary to replace an anvil with a new one, the coupling niember 52 may be saved and utilized with the new anvil. As shown in Figs. 2 and 3 the anvil and the coupling member are provided with interlocking portions, parallel confronting grooves 54 being formed in the coupling member to receive the opposite longitudinal margins of the anvil. This construction provides flanges 56 on the cupling member 52 to overlap said margins and bear on their upper surfaces.

Registering dowel-holes58 and 60 (Fi s. 4 and 5) are formed in the anvil and in t e coupling member respectively toreceive a dowel-pin 53 (Figs. 7 and 8) by which the anvil may be locked to the coupling member. This pin is preferably provided with resilient means for maintaining it in looking position so that it will neither drop therefrom nor rise into the path of feeding movement of the work. Accordingly, as herein shown, the pin is provided with a clip 62 of resilient sheet metal, the pin and the clip constituting a de tachable key. I

One end of the pin projects through and fits tightly in the clip, and is preferably swaged to effect a rigid and permanent connection therewith. As shown in Figs. 3 and 6, the lateral dimension of the clip between the parallel edges 64 thereof is commensurate with the space between the confronting edges of the flanges 56 formed on the coupling member 52, so that when the dowel is forced home the clip will be seated on the upper surface of the plate 16 between the flanges 56 and will be prevented from turning about the axis of the dowel. I The clip is provided with a downwardly extending resilient spring tongue 66 adjoining but ofi'set laterally from its body portion. This tongue, as shown in Figs. 1 and ifs 7, is bent at an angle corresponding to the angle of an inclined undercut surface 68 formed on the coupling member 52. As shown in Fig. 1 no part of the key projects above the level of the work-supporting surface 22.

l Vhen the dowel-pin 53 is inserted into the holes in the anvil 16 and in the cou aling member 52, as shown in Fig. 3, the extremity of the tongue 66 engages the inclined surface 68 and thereby resists turning the clip to place its edges 64: in parallelism with the confronting edges of the flanges 56. Consequently, to force the dowel home it is necessary to flex the tongue 66 by trimming the clip in a clockwise direction until the edges 64 are parallel with the confronting edges of the flanges 56. When this parallel relation is effected the body of the clip 62 drops into the space be tween the flanges 56 and becomes seated on the upper surface of the anvil 16, the inclination of the tongue 66 and of the surface 68 being sufficient to cause the seating movement. lVhen the anvil plate, the coupling member 52 and the key are thus interlocked the tongue 66 and the surface 68 are mantained in cooperative relation by the flanges 54. At the same time the tongue 66 and the surface 68 maintain the body of the clip seated on the anvil between the flanges 54 so that the upper em tremity of the key will not project above the level of the work-supporting surface 22 (see Fig. 1). These reciprocal eflects combine to cause a firm gripping of the coupling member 52 by the key.

As shown in Figs. 1, 2, 3 and 5, the coupling member 52 is provided with a lug 70 to form the operating connection with the operating member 50. Moreover, as shown in Fig. 2, in which the coupling member, the anvil and the key are fully assembled, a small space is proided between the upper surface of the lug 70 and the confronting edge of the clip. This space is sufficient to receive the tip of a screwdriver by which the clip may be pried upwardly to release it from the coupling member 52 notwithstanding the resistance maintained by the spring tongue 66. As the head of the cli is raised above the level of the flanges 56, the clip is turned to the position shown. in Fig. 3, by the reaction of the tongue 66. Having thus released the clip from the coupling member 52 it is only necessary to withdraw the key with the fingers to detach it from the other parts. The anvil ma then be withdrawn endwise from the plunger-head l4 and from the coupling member 52 without detaching any other part of the machine and a new anvil may be easily inserted in its place and secured by replacing the dowel as hereinbefore explained.

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

1. In a hook-setting machine, an anvil formed to occupy the throat of a lacing-hook,

a coupling member by which said anvil and an operating member may be connected, said anvil and said coupling member having complemental interlocking portions provided with registering holes, a locking member formed to slide in said holes to lock the anvil to the coupling member, and resilient means arranged to maintain said locking member in locking position.

2. In a hook-setting machine, an anvil formed to occupy the throat of a lacing-hook, a coupling member by which said anvil and an operating member may be connected, said anvil and said coupling member having complemental interlocking portions provided with complemental dowel-holes, and a detachable key comprising a dowel and a resilient clip, the clip being formed to grip said coupling member to maintain the dowel in said holes.

3. In a hook-setting machine, an anvil formed to occupy the throat of a lacing-hook, a coupling member by which said anvil and an operating member may be connected, said anvil and said coupling member having complemental interlocking portions provided with complemental dowel-holes, and a detachable key comprising a dowel and a resilient clip, said coupling member having an undercut surface and said clip having a tongue arran ed to cooperate with said surface to maintain the dowel in said holes.

l. In a hook-setting machine, an anvil formed to occupy the throat of a lacing-hook, a coupling member by which said anvil and an operating member may be connected, said coupling member and the anvil having complemental dowel-holes, and a detachable key comprising a dowel and resilient clip secured to one end thereof, said clip and said coupling member having cooperative portions formed and arranged to maintain a portion of the clip seated 011 the anvil, and said coupling member having confronting flanges to overlap opposite margins of the anvil and to abut opposite edges of the clip and thereby prevent the clip from turning about the axis of the dowel.

5. In a hook-setting machine, an anvil formed to occupy the throat of a lacing-hook, a coupling member provided with confronting grooves to receive opposite margins of said anvil and with a lug to form an operating connection with an operating member, the anvil and the coupling member having complemental dowel-holes, and a detachable key comprising a dowel and a resilient clip secured to one end thereof, said clip being formed to grip said coupling member, and a portion of the clip being arranged to lie adjacent to said lug and spaced therefrom so that a small implement such as a screw-driver may be inserted between them and operated to disengage the clip from the coupling member.

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6. In a hook-setting machine, an anvil formed to occupy the throat of a lacing book, a carrier therefor provided with grooves in which the anvil is arranged to slide to and from its operative position, an operating member for moving said anvil to and from said position, a coupling member by which said anvil and saidoperating memher are cperatively connected, said coupling member being provided with grooves through which said anvil may be inserted to engage the grooves in said carrier, said anvil and said coupling member having cooperative holes arranged to register when the parts are operatively assembled, a locking member formed to slidein said holes to lock the anvil to the coupling member, and resiliont means arranged to maintain said locking member in locking position.

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

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