US1958438A - Fastening inserting machine - Google Patents

Description

May 15, 1934. F. N. LA CHAPELLE 1,953,433

FASTENING INSERTING MACHINE Filed April 15, 1953 2 Sheets-Sheet l Fig. 1

y 1934. F. N. LA CHAPELLE 1,958,438

FASTENING INSERTING MACHINE Filed April 15, 1933 2 Sheets-Sheet 2' A/VENTUR' Patented May 15, 1934 UNITED STATES PATENT OFFICE FASTENING INSERTING MACHINE Application April 15, 1933, Serial No. 666,301

39 Claims.

This invention relates to fastening inserting machines and is illustrated herein as embodied in a machine particularly adapted to insert fibre pegs in the manufacture of boots and shoes.

When inserting fastenings, for example, pegs, to secure together shoe parts it is desirable that the fastening receiving holes into which the fastenings are driven extend entirely through the shoe parts regardless of the thickness of the shoe parts in which the holes are made. For example, in McKay sole laying (that is, the preliminary attachment of the soles of McKay shoes by fastenings driven through the soles into the lasted uppers and insoles) the fastening receiving holes extend from the surface of the channel in the tread face of the forepart and shank of the outsole and from the heel-seat portion of the outsole through the insole of the shoe. The thickness of the shoe bottom is greater at the heel-seat portion where there is no channel than it is at the forepart and shank. The insoles of McKay shoes are often relatively thin and it is therefore necessary that the fastening receiving holes extend entirely through the insole to obtain maximum holdim power of fastenings which depend for their holding power principally upon the friction between the fastening and the walls of the holes in which they are inserted. In order to insure that the fastening receiving holes are formed entirely through the work, the tool used to form the holes is arranged to penetrate entirely through the work and tostrike the bottom plate of the last or other surface on which the shoe is supported. In machines of the type disclosed in United States Letters Patent No. 1,802,900, granted April 28, 1931, on an application filed in the names of Fred N. La Chapelle and Fred C. Eastman, the movement of the tool is so adjusted to the thickness of the work that it will come to rest when it strikes the supporting surface but under certain conditions the tool will strike the supporting surface with excessive force with the result that the tool is sometimes broken. The breakage of tools necessitates stopping the machine to replace the tool and to make necessary adjustments, causing delay and annoyance to the operator.

An object of the present invention, accordingly, is to provide improved means for connecting an operating tool to reciprocating means of a fastening inserting machine by the use of which the tool is permitted to come to rest when it meets an excessive resistance in its movement toward a work piece. As illustrated, this connecting means comprises a rigid adjustable link connected to a spring operated means, a pin secured to a tool carrier and mounted in an elongated slot in the link, a collar mounted on the link and bearing against lugs on the tool carrier, a coil spring surrounding the link and engaging the collar, and means comprising a pair of lock nuts for adjusting the tension of the spring to permit the spring to yield when the tool meets an excessive resistance in its movement toward the work, thereby permitting the tool to come to rest while the spring operated means continues its movement.

Another object of the, invention is to provide improved means arranged to feed a strip of fastening material a distance substantially equal to the depth of the fastening receiving hole formed in the work to insure that the ends of the fastenings will be substantially flush with the surface of the work. In accordance with this object, a feature of the invention resides in means mounted on the tool carrier arranged to engage strip feeding means at the time that a tool secured to the carrier engages the work to feed a strip of fastening material a distance substantially equal to the depth that the tool penetrates the work. As illustrated, the feeding means comprises a guide tube for a strip of fastening material, a dog mounted on'the tube for clamping the strip of fastening material to the tube, a bracket secured to the tube, and an abutment on the bracket arranged to be engaged by a projection on the tool carrier to move the bracket and the tube to feed a length of fastening material toward a fastening severing means a distance substantially equal to the thickness of the Work piece. The abutment on the feeding means normally is located below the projection on said carrier a distance equal to the distance which the lower end of the tool must travel to reach the lower end of a nozzle on the machine, thus insuring that the strip feeding means will be operated to feed the fastening material only while the tool is penetrating the work.

With the above and other objects and features in view the invention will now be described in connection with the accompanying drawings and pointed out in the claims.

In the drawings,

Fig. 1 is a view in side elevation of a portion of a fastening inserting machine embodying the present invention;

Fig. 2 is a view in front elevation of a portion of the machine;

Fig. 3 is a perspective view of the tool carrier with parts thereof broken away; and

Fig. 4 is an enlarged perspective view of a one and one-half times as great. passes through this elongated hole 56 and n0rportion of the fastening material feeding mech anism.

Although the present invention is disclosed as embodied in a machine of the type disclosed in United States Letters Patent No. 1,802,900, above referred to, it is to be understood that the invention is not limited in its utility to use in fastening inserting machines of that type but may be embodied in other types of fastening inserting machines if desired.

The head 10 of the machine embodying the present invention is mounted on a column (not shown). A cam shaft 12 is mounted in suitable bearings in the head 10 of the machine and mounted on the shaft 12 is a cam member 14. The cam shaft 12 is connected to any suitable source of power through a clutch (not shown).

A lifting cam 16 is mounted adjacent to the forward end of the shaft 12 for operating a lifting bar 18 the lower end of which bears against the cam 16 and thus serves as a lifting block. The lifting bar 18 is provided with a pivoted block 20 which fits into a slot in a lever 22. The lever 22 is secured at one end to a movable fulcrum 24 and at its other end to a tool carrier 26 in a manner which will later be fully described. The lever 22 is urged in a counterclockwise direction by a spring 28 to move the tool carrier 26 toward the work. The fulcrum 24 is mounted on a lever 30 pivoted to the head of the machine at one end and at its other end is pivotally connected to a link 32 which in turn is adjustably connected to one arm of a bell crank lever 34. The other arm of the bell crank lever 34 is provided with a cam roll which rides in a cam path 36 formed in the cam member 14. The position of the link 32 relatively to the bell crank lever 34 is changed through connections including alink 38, a lever 40 and a rod 42 to a hand lever (not shown). By this means the throw of the bell cranklever 34 is varied to shift the fulcrum 24 of the lever 22 varying distances according to the thickness of the work being operated upon. It is to be noted.

that the link cam 16 is provided with a pair of elevated portions in order that the tool carrier 26 may be moved toward the work twice during each revolution of the cam shaft 12, one movement causing a tool 44 to penetrate the work to form a fastening receiving hole and the other movement causing a fastening to be inserted in the fastening receiving hole. The tool 44 is secured to the tool carrier 26 by means of a clamping device 47 which is secured to the tool carrier by a screw 49 and a nut 51 to clamp the tool 44 to the tool carrier 26. .The parts of the machine described above are substantially the same as those disclosed in the above-mentioned Letters Patent No. 1,892,900 to which reference may be had for a more detailed description.

The lever 22 is connected to the tool carrier 26 by a yieldable connection which will now be described. The tool carrier 26 is provided with a pair of forwardly projecting lugs 46, 48 through which holes are drilled to receive a headed pin 50. The upper surfaces of the lugs 46, 48 are flat and are formed substantially at right angles to the general plane of the tool carrier 26. Mounted between the lugs 46, 48 is a reduced end 52 of a threaded sleeve 54. The end 52 of the sleeve 54 is provided with a substantially elliptical shaped hole 56 the minor axis of which is substantially the same as the diameter of the pin 50, and the major axis, as illustrated, is substantially The pin 50 since the hole is longer than the diameter of g the pin, there is opportunity, under certain conditions, for relative movement between the pin 50 and the sleeve 54. A washer or collar 58 is placed on the sleeve 54 and rests upon the flat upper surfaces of the lugs 46, 48. A threaded member 66 is screwed into the threaded sleeve 54 to form an adjustable link. The member 60 is provided with an enlarged threaded upper portion 62 on which are threaded lock nuts 64, 66. A washer 68 engages the nut 64 and a spring '76 is interposed between the washer 58 and the washer 68. When the nuts 64, 66 are adjusted so that the spring '70 is compressed the washer is interposed between the washer 58 and the upward movement of the sleeve 54 relatively to the lugs 46, 48 is limited by engagement of the pin 56 with the lower portion of the Wall of the hole 56 in the lower end 52 of the sleeve 54. By properly adjusting the nuts 64, 66 the spring '70 may be compressed to such an extent that it will not yield when the tool 44 is penetrating a shoe bottom or other work piece to form a fastening receiving hole or when the tool 44 is driving a fastening into the hole but will yield when the tool 44 strikes the bottom plate of a last or other device on which the work is supported. In other words tension on the spring '76 is so adjusted that the spring will not yield when'the tool 44 is penetrating the work or driving the fastening but will yield when the tool 44 meets an excessive resistance.

The upper end of the member 60 is provided with a pair of spaced upwardly extending lugs '72, '14 between which is positioned the end of the tool operating lever 22. The lever 22 is secured to the lugs '72, 74 by a headed. pin 76 passing through holes in the lugs and the end'of the lever 22. The tool carrier 26 is thus yieldably connected to the lever 22 and movement of the lever 22 will reciprocate the tool carrier 26 in ways formed in a member 78 which is secured to the head 10 of the machine by screws 80. Thetoo-l carrier 26 will be moved downwardly by the action of the spring 28 when a high portion of the cam 16 passes from beneath the lifting bar 18 and the tool carrier will move downwardly either to form a fastening receiving hole or to drive a fastening until the tool meets an excessive resistance. The spring '70 will then yield, thereby permitting the tool carrier 26 and the tool 44 secured thereto to come torest, the lever 22 continuing its downward movement. When this occurs the elongated hole 56 in the lower end of the sleeve 54 permits relative movement between the sleeve 54 and the pin 50. This relative movement is ordinarily comparatively slight and the upper end of the hole 56 seldom, if ever, strikes the pin 50, and undernormal conditions the tool 44 will stop whenit strikes the bottom plate of a last or when the end of the fastening which is being driven strikes the bottom of a hole formed in the work.

The tool carrier 26 is provided with a projection 82 which is arranged to strike a block or abutment 84 formed on a movable bracket 86 to feed a strip of fastening material 88 between successive operations of the machine. The bracket 86 is secured by means of clamping screws 90, 92 to a tubular guide 94 which is slidably mounted in bosses 96, 98 formed on the member '78. Mounted on the lower end ofthe tubular guide 94 is a small bell crank lever 102 having an arm 104 ex- Lil tending substantially horizontally and parallel to a link 106 also pivoted at 108 to the guide 94. A dog 110- (best shown in Fig. 2) having teeth 112 arranged for engagement with the strip of fastening material 88 is pivoted at 114 to the link 106. A spring 116 anchored at one end to the link 106 and the bell crank lever 102, and at the other end to a projecting portion 118 of the guide 94, tends to rock the bell crank lever 102 and the link 106 in a clockwise direction so that as the guide member 94 is moved downwardly the dog 110 will grip the fastening material 88 and press it firmly against the lower cut away portion of the guide 94 tofeed the fastening material downwardly. Upward movement of the guide tube 94 tends to rock the bell crank lever 102 and the link 106 in a counterclockwise direction, releasing the hold of the dog 110 against the fastening material 88 so that the dog 110 can move upwardly to get a new grip on the fastening material. To prevent retrograde movement of the fastening material a second dog 120 is provided which is fulcrumed to the machine frame through a link 122 and urged upwardly in a clockwise direction by a spring 124.

In order to return the bracket 86 and the feed dog 110 attached thereto to a predetermined upper position a link 126 pivotally secured at one end to the upper end of the bracket 86 and at its other end to one arm of a bell crank lever 128 is arranged to be urged upwardly by a coil spring 130 surrounding the fulcrum of the bell crank lever 128. The coil spring 130 is anchored at one end to the machine frame and at its other end to the bell crank lever 128. The arm 132 of the bell crank lever 128 is provided with a stop screw 13.4 which engages the machine head 10. The screw 134 may be adjusted to stop upward movement of the bracket 86 at the desired location and the screw 134 may then be locked, by the use of a lock nut 136. Preferably, the screw 184 is so adjusted that the upper limit of movement or initial position of the block 84 on the bracket 86 is located a distance from the upper position of the projection 82 on the tool carrier 26 equal to the distance which the end of the tool 44 must travel from the position shown in Fig. 2 to reach the end of a nozzle 138. In other words, the projection 82 will not strike the block 84 until the lower end of the tool 44 reaches the lower end of the nozzle 138. Since the tool carrier 26 stops when the tool 44 meets an excessive resistance, or strikes the bottom plate of a last, the extent of feeding movement of the tube 94 and the dog 110- is substantially equal to the thickness of the work, and the length of the fastening severed from the fastening material 88 is substantially equal to the thickness of the work.

The fastening severing and transfer mechanism disclosed herein is of the type disclosed in said Letters Patent No. 1,802,900. A bar 140 is slidably mounted in a boss 142 formed in the lower part of the machine head 10 and is moved to sever a fastening and to transfer the fastening into the path of movement of the tool 44 by connections to a cam path 144. The fastening material 88 is fed downwardly through a tube 146 and into a hole (not shown) in the bar 140. The bar 140 is then moved forwardly first to sever the fastening and then to transfer the fastening into the path of movement of the tool 44. The nozzle 13.8 of the present machine, when engaged by a shoe or other work piece, is arranged to be moved upwardly to start the machine as described in the abovementioned Letters Patent.

Since the tool 44 is reciprocated twice during each cycle of operation of the machine it is necessary that mechanism be provided to prevent operation of the strip feeding mechanism during the fastening inserting movement of the tool 44. As best shown in Figs. 2 and 4, the crank lever 102 is formed with a surface 146 arranged for engagement with a surface 148 formed upon a lever 150 fulcrumed to the head of the machine. The lever 150 is provided with a slot 154 engaging a crank pin 156 carried by the forward extremity of the shaft 12. When the lever 150 is rocked in a counterclockwise direction the bell crank lever 102 is swung about its fulcrum 108 to release the dog 110 from the strip of fastening material 88. This mechanism is substantially the same as that disclosed in the above-mentioned Letters Patent No. 1,802,900 to which reference may be had for a more detailed description.

Although the parts of the machine have been described in detail it is believed to be desirable, for a better understanding of the present invention, to describe briefly the operation of the machine. A shoe or other work piece is placed against the nozzle 138 which is moved upwardly 100 to start the machine. t this time the fulcrum 24 of the lever 22 is in the position as shown in Fig. 1, and when a high portion of the cam 16 has passed from beneath the lower end of the lifting bar 18 the spring 28 thrusts the tool carrier 26 and the tool 44 toward the work. When the tool 44 has pierced the work and strikes the bottom plate of the last the tool 44 stops, causing the yieldable connection between the tool carrier 26 and the lever 22 to move relatively to the tool carrier. During this movement of the tool carrier 26 the strip of fastening material 88 is fed into the hole formed in the transfer bar 140, the length of movement of the strip of fastening material being substantially equal to the thickness of the work, as hereinbefore described. The lifting bar 18 is then moved upwardly by the action of the cam 16 carrying with it the tool carrier 26 and at the same time the lever 30 is moved downwardly by the cam 86, thus lowering 120 the fulcrum 24 and the lever 22. When the other high part of the cam 16 passes from below the end of the lifting bar 18, the tool carrier 26 is moved toward the work and at the end of its fastening inserting movement is substantially flush with the end of the nozzle 138. Prior to the downward movement of the tool 44 the transfer bar 140 has been moved to sever a fastening and move the fastening into the. path of movement of the tool. The lever 150 has also been moved in a counterclockwise direction to engage the surface 146 of the bell crank lever 102, thereby rendering the strip feeding mechanism inoperative during the fastening inserting movement of the tool 44. After the fastening has been inserted in the work the parts of the machine are returned to the position shown in Fig. 1 and the machine stopped in readiness for another cycle of operation.

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

1. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a work piece, a carrier for said tool, spring operated means for moving said carrier and said tool toward the work piece, and connections between said means and said tool carrier constructed and arranged to yield to permit the tool to come to rest when the tool meets an excessive resistance.

2. A fastening inserting machinehaving, in combination, a tool for forming fastening receiving holes in a work piece and for inserting fastenings in said holes, a carrier for said tool, spring operated means for moving said carrier toward a work piece, and connections between said means and said carrier constructed and arranged to yield to permit the tool to come to rest when the tool meets an excessive resistance in its movement toward the work piece.

3. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a work piece, a carrier to which the tool is secured, a spring operated lever for moving said carrier and said tool toward a Work piece, and a yieldable connection between said lever and said carrier arranged to permit the tool to come to rest when the tool meets an excessive resistance in its hole forming movement.

4. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a work piece, a carrier for said tool, a lever for moving said tool and said carrier toward the work piece, a spring connected to said lever for moving the tool toward the work, and connections between said carrier and said lever constructed and arranged to yield to permit the tool to come to rest when the tool meets an excessive resistance in its hole forming movement.

5. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a work piece, a carrier for said tool, a lever for moving said tool and said carrier toward and away from said work. piece, a cam operated means connected to said lever for moving the tool away from the work, a spring connected to said lever for moving the tool toward the work, and connections between said lever and said tool carrier arranged to yield to permit the tool to come to rest when the tool meets an excessive resistance in its hole forming movement.

6. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a work piece and for inserting fastenings in said holes, a carrier for said tool, a lever for moving said tool and said carrier toward the work piece, a spring connected to said lever for moving the tool toward the work, and connections between said carrier and said lever constructed and arranged to yield to permit the tool to come to rest when the tool meets an excessive resistance in its movement toward the work.

'7. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a work piece and for inserting fastenings in said holes, a carrier for said tool, a lever for moving said tool and said carrier toward the work piece, a member connected to said lever for moving said tool carrier away from the work piece, a spring connected to said lever for moving the tool toward the work, and connections between said carrier and said lever arranged to yield to permit the tool to come to rest when the tool meets an excessive resistance in its movement toward the work piece.

8. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a work piece,'a carrier for said tool, spring operated means for moving said tool and carrier toward the work piece, and means ,includingan adjustable spring connecting said spring operated means to said carrier and constructed and arranged to yield to permit the tool to come to'rest when the tool meets an excessive resistance in its hole forming movement.

9. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a work piece and for inserting fastenings in said hole, a carrier for said tool, and an adjustable link yieldably connected to said tool carrier at one end, and spring operated means connected to the other end of said link for moving said tool and carrier toward the work piece, said link being movable relatively to the tool carrier to permit the tool to come to rest when the tool meets an excessive resistance.

10. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a work piece, a carrier for said tool, spring operated means for moving said tool and carrier toward the work piece, and means including an adjustable link yieldably connecting said spring-operated means to the carrier and constructed and arranged to yield to permit the tool to come to rest when the tool meets an excessive resistance in its hole-forming movement.

11. A fastening inserting machine having, in combination, a tool for forming fastening re-= ceiving holes in a work piece and for inserting fastenings' in said holes, a carrier for said tool, an adjustable link yieldably connected to said carrier, spring operated means connected to said link for moving said tool and carrier toward the work piece, and a spring interposed between said carrier and said spring operated means constructed and arranged to yield to permit, the tool to come to rest when thetool meets an excessive resistance in its movement toward the Work.

12. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a work piece, a carrier for said tool, means for moving said tool and carrier to ward the work piece, a link having an elongated hole at its lower end, a pin mounted in the tool carrier and arranged to be passed through said elongated hole to connect said link to said car-- rier, and a spring interposed'between said pin and the upper end of said link constructed and arranged to yield to permit the tool to come to rest when the tool meets an excessive resistance in its hole forming movement.

13. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a work piece and for inserting fastenings in said holes, a carrier for said tool, spring operated means for moving the tool and carrier toward the work piece, an adjustable link secured to said spring operated means and yieldably connected to said tool carrier, and an adjustable spring interposed between said spring operated means and said tool carrier constructed and arranged to yield to permit the tool to come to rest when the tool meetsan excessive resistance in its movement toward the work.

14. A fastening inserting machine having, in combination, a. tool for forming fastening receiving holes in a work piece and for inserting fastenings in said holes, a reciprocable carrier for said tool, an adjustable link having an elongated hole at one end, means on said carrier arranged to be loosely connected to said link, a spring operated member connected to said link for moving said tool and carrier toward the work piece, and means'interposed between the upper nd of said link and the means on said carrier constructed and arranged to yield to permit the tool to come to rest when the tool meets an excessive resistance in its movement toward the work.

15. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a work piece, a carrier for said tool, an adjustable link having an elongated hole at its lower end, a pin passing through said hole for securing the link to the tool carrier, spring operated means connected to the upper end of said link for moving the tool and carrier toward the work piece, and an adjustable spring interposed between said tool carrier and said spring operated means constructed and arranged to yield to permit relative movement between the link and the tool carrier thereby permitting the tool to come to rest when the tool meets an excessive' resistance in its hole forming movement.

16. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a work piece and for inserting fastenings in said holes, a reciprocable carrier for said tool, a rigid adjustable link having an elongated hole at one end, lugs on said carrier, a pin extending through said lugs and through the hole in said link for loosely connecting said carrier to said link, a lever connected to said link for moving said tool and carrier toward a work piece, and an adjustable spring interposed between the upper end of said link and said lugs constructed and arranged to yield to permit the tool to come to rest when the tool meets an excessive resistance in its movement toward the work piece.

17. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in the work piece, a carrier for said tool, spring operated means for moving said tool and the carrier toward the work piece, an adjustable link having an elongated hole at its lower end, means for securing the lower end of the link to the tool carrier, said means being constructed and arranged to permit relative movement between the link and the tool carrier, and an adjustable spring interposed between the tool carrier and the spring operated means constructed and arranged to yield to permit the tool to come to rest when the tool meets an excessive resistance in its hole forming movement.

18. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a work piece and for inserting fastenings in said holes, a reciprocable carrier for said 1 tool, lugs on said carrier, an adjustable link connected to said carrier and constructed and arranged for movement relatively to said carrier to permit the tool to come to rest when it meets an excessive resistance, a spring surrounding said link and arranged to bear against said lugs, means on said link for tensioning said spring, and means for moving said tool and carrier toward a work piece.

19. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a work piece and for inserting fastenings in said holes, a reciprocable carrier for said tool, means for moving said tool toward the work piece, means for moving said tool away from said work piece, and a connection between said carrier and said first-mentioned means constructed and arranged to yield to permit the tool to come to rest when the tool meets an excessive resistance in its movement toward the work piece, said connections comprising a link, and a pin and slot connection between the link and the tool carrier constructed and arranged to permit relative movement between the link and the tool carrier when the tool meets an excessive resistance.

20. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a Work piece and for inserting fastenings in said holes, a reciprocable carrier for said tool, means for moving said tool toward the work piece, means for moving said tool away from said work piece, and a connection between said carrier and said first-mentioned means constructed and arranged to yield to permit the tool to come to rest when the tool meets an excessive resistance in its movement toward the work piece, said connection comprising a link, a pin and slot connection between the link and the tool carrier constructed and arranged to permit relative movement between the link and the tool carrier when the tool meets an excessive resistance, and an adjustable spring interposed between the tool carrier and the first-mentioned means arranged to maintain the connection in extended position.

21. A fastening vinserting machine having, in combination, a tool for forming fastening receiving holes in a work piece and for inserting fastenings in said holes, a reciprocable carrier for said tool, spring operated means for moving said tool and carrier toward the work piece, and a connection between said carrier and said spring operated means, said connection comprising an adjustable link connected to said spring operated means, a pin and slot connection between said link and said tool carrier, and an adjustable spring interposed between said pin and slot .Connection and the upper end of said link to maintain the connection in extended condition until the tool meets an excessive resistance in its movement toward the work.

22. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a work piece and for inserting fastenings in said-holes, a reciprocable carrier for said tool, spring operated means for moving said tool and carrier toward the work piece, means for moving said tool and carrier away from the work piece, and a yieldable connection between said spring operated means and said carrier, said connection including a rigid adjustable link .connected to said spring operated means, a pin secured to said carrier and mounted in an elongated slot in said link, a collar mounted on said link and bearing against the tool carrier, a coil spring surrounding said link and engaging said collar, and means for adjusting the tension of said spring to permit the spring to yield when the tool meets an excessive resistance in its movement toward the work, thereby permitting the tool .to come to rest while the spring operated means continues its movement.

23. A fastening inserting machine having, in combination, a tool operating both as an awl and as a driver, a carrier for said tool, means for moving said tool and carrier toward a work piece, means for feeding a strip of fastening material, and means on said tool carrier arranged to engage said feeding means when the tool engages the work to feed a strip of fastening material a distance substantially equal to' the depth that the tool penetrates the work.

24. A fastening inserting machine having, in combination, a tool operating both as an awl and as a driver, a carrier for said tool, means for severing a fastening from a strip of fastening material and for moving said fasten-ing into the path of movement of thetool, means for feeding said strip toward the severing means, and means on said tool carrier for engaging said strip feeding means to move said feeding means a distance substantially equal to the depth of the hole formed by said tool.

25. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a work piece and for inserting fastenings in said holes, a carrier for said tool, means for severing a fastening from a length of fastening material and for moving said fastening into the path of movement of the tool when the tool is operated to insert a fastening, means for feeding said strip toward the severing means, and means on said tool'carrier constructed and arranged to engage the strip feeding means to move the feeding means a distance equal to the depth of the hole formed by said tool when said tool is operating to form a fastening receiving hole in the work piece.

26. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a work piece, a carrier for said tool, means for severing a fastening from a strip of fastening material and for moving said fastening into the path of movement of said tool, means for feeding said strip to the severing means, and a projection on said tool carrier arranged to engage said strip feeding means as the tool strikes the Work in its hole forming movement to move said strip feeding means a distance substantially equal to the depth of the hole formed in the Work.

27. A fastening inserting machine having, in combination, a tool acting both as an awl and as a driver, a carrier for said tool, means for feeding a strip of fastening material, and means on said carrier arranged to move relatively to said strip feeding means and then to engage said strip feeding means as the tool penetrates the work to move said strip feeding means a distance substantially equal to the depth of the hole formed in said work piece by said tool.

28. A fastening inserting machine having, in combination, a tool operating both as an awl and as a driver, a carrier for said tool, means for feeding a strip of fastening material, an abutment on said stripfeeding means, and a projection'on said carrier located above said abutment and arranged to engage said abutment to move said strip feeding means as the tool penetrates the work to feed a length of fastening material substantially equal to the thickness of the work.

29. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a work piece and for inserting fastenings in said holes, a carrier for said tool, means for moving said tool and said carrier toward the work piece, means for severing a fastening from a strip of fastening material, a projection on said tool carrier, a guide tube for a strip of fastening material, a dog mounted on said tube for clamping the strip of fastening material to the tube, a bracket secured to said tube, and an abutment on said bracket arranged to be engaged by said projection on the tool carrier to move said bracket and said tube to feed a length of fastening material toward said severing means a distance substantially equal to the thickness of the work piece.

30. A fastening inserting machine having, in combination, a tool carrier, an operating tool secured to said carrier, means for severing a fastening from a strip of fastening material and for moving said fastening into the path of movement of said tool, means for feeding a strip of fastening material to said severing means, means on said carrier arranged to engage the feeding means to move said feeding means a distance substantially equal to the thickness of the work, means for returning the feeding means to initial position, and a stop member adjustable to determine the initial position of said feeding means.

31. A fastening inserting machine having, in combination, a tool carrier, a tool secured to said carrier operating both as an awl and as a driver, means for severing a fastening from a strip of fastening material and for moving said fastening into the path of movement of said tool, a projection on said carrier, means for feeding a strip of fastening material to said severing means, an abutment on said feeding means normally located below the projection on said carrier and arranged to be engaged by said projection when the tool enters the Work to form a fastening receiving hole therein and to move the feeding means while the tool is penetrating the work, a member secured to said feeding means to return the feeding means to initial position, and a stop member constructed and arranged for adjustment to determine the initial position of said feeding means.

32. A fastening inserting machine having, in combination, a tool carrier, an operating tool secured to said carrier, means for severing a fastening from a strip of fastening material and for moving said fastening into the path of movement of said tool, means for moving said tool and said carrier toward the Work piece, a projection on said tool carrier, a guide tube for a strip of fastening material, a bracket secured to said tube, means mounted on said tube for clamping the strip of fastening material to the tube, an abutment on said bracket located below the projection on said carrier and arranged to be engaged by the projection on said tool carrier to move the bracket and tube to feed a length of fastening material toward said severing means a distance substantially equal to the thickness of the work piece, means connected to said bracket for returning the bracket and tube to initial position, and a stop member adjustable to determine the initial position of said bracket and tube.

33. A fastening inserting machine having, in combination, a tool carrier, an operating tool secured to said carrier, a fastening guiding nozzle, means for severing a fastening from a strip of fastening material and for moving said fastening to said nozzle, the lower end of said tool being located above the lower end of said nozzle a distance sufficient to clear the fastening severing means when the fastening severing means is moving a fastening to said nozzle, a projection on said tool carrier, a guide tube for a strip of fastening material, a dog mounted on said tube for clamping the strip of fastening material to the tube, a bracket secured to said tube, an abutment on said bracket arranged to be engaged by said projection on the tool carrier to move said bracket and said tube to feed a strip of fastening material toward said severing means, means for returning the bracket and tube to initial position, and an adjustable stop member constructed and arranged to position the abutment on the bracket" a distance below the projection on the tool carrier equal to the distance from the lower end of the tool to the lower end of the nozzle, thereby insuring that the strip feeding means will be operated to feed fastening material only while the tool is penetrating the work.

34. A fastening inserting machine having, in combination, a single tool acting both as an awl and as a driver, a carrier for said tool, means for reciprocating said tool and carrier, connections between said carrier and said reciprocating means constructed and arranged to be substantially unyielding when the tool is penetrating the work but arranged to yield to permit the tool to come to rest when it meets an excessive resistance, means for feeding a strip of fastening material, and means on said carrier arranged to engage said strip feeding means to move said strip feeding means while the tool is penetrating the Work.

35. A fastening inserting machine having, in combination, a tool acting both as an awl and as a driver, a carrier for said tool, means for rec1pro- ,cating said tool and carrier, connections between said carrier and said reciprocating means constructed and arranged to be substantially unyielding when the tool is penetrating the work but arranged to yield to permit the tool to come to rest when the tool meets an excessive resistance, means for severing a fastening from a strip of fastening material and for moving said fastening into the path of movement of said tool when said tool. is operating as a driver, means for feeding a strip of fastening material to said fassaid tool, means for moving said tool toward the work piece, a connection between said carrier and said means constructed and arranged to yield to permit the tool to come to rest when the tool meets an excessive resistance in its movement toward the work, said connection comprising a link, a pin and slot connection between the link and the tool carrier constructed and arranged to permit relative movement between the link and the tool carrier when the tool meets an excessive resistance, and means arranged to be engaged by said tool carrier when the tool is penetrating the work to feed a strip of fastening material a distance substantially equal to the thickness of the work.

37. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a work piece and for inserting fastenings in said holes, a reciprocable carrier for said tool, means for moving said tool toward the work piece, a connection between said carrier and said means constructed and arranged to yield to permit the tool to come to rest when the tool meets an excessive resistance in its work penetrating movement, said connection comprising a link and a pin and slot connection between the link and the tool carrier constructed and arranged to permit relative movement between the link and the tool carrier when the tool meets an excessive resistance, a projection on said tool carrier, a guide tube for a strip of fastening material, a dog mounted on said tube for clamping a strip of fastening material to the tube, a bracket secured to said tube, and an abutment on said bracket arranged to be engaged by the projection on the tool carrier to move said bracket and said tube to feed a length of fastening material toward said severing means a distance substantially equal to the thickness of the work piece.

38. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a work piece and for inserting fastenings in said holes, a reciprocable carrier for said tool, means for moving said tool toward the work piece, a connection between said carrier and said means constructed and arranged to yield to permit the tool to come to rest when the tool meets an excessive resistance in its work penetrating movement, said connection comprising a link and a pin and slot connection between the link and the tool carrier constructed and arranged to permit relative movement between the link and the tool carrier when the tool meets an excessive resistance, a projection on said tool carrier, a guide tube for a strip of fastening material, a dog mounted on said tube for clamping a strip of fastening material to the tube, a bracket secured to said tube, an abutment on said bracket arranged to be engaged by the projection on the tool carrier to move said bracket and said tube to feed a length of fastening material toward said severing means a distance substantially equal to the thickness of the work piece, and means connected to said bracket for returning the tube and bracket to initial position upon return movement of the tool carrier.

39. A fastening inserting machine having, in combination, a tool for forming fastening receiving holes in a work piece and for inserting fastenings in said holes, a reciprocable carrier for said tool, means for moving said tool toward the work piece, a connection between said carrier and said means constructed and arranged to yield to permit the tool to come to rest when the tool meets an excessive resistance in its work penetrating movement, said connection comprising a link and a pin and slot connection between the link and the tool carrier constructed and arranged to permit relative movement between the link and the tool carrier when the tool meets an excessive resistance, a projection on said tool carrier, a movable guide tube for a strip of fastening material, a dog mounted on said tube for clamping a strip of fastening material to the tube, a bracket secured to said tube, an abutment on said bracket arranged to be engaged by the projection on the tool carrier to move said bracket and said tube to feed a length of fastening material toward said severing means a distance substantially equal to the thickness of the work piece, means connected to said bracket for returning the tube and bracket to initial position upon return movement of the tool carrier, and an adjustable stop member connected to the means for returning the tube and bracket to initial position for determining the initial position of said tube and bracket.

FRED N. LA CHAPELLE.

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