US1950554A - Fastening inserting machine - Google Patents

Description

arch 13, 1934. c. E. HOOD 11,950,554

FASTENING INSERTING MACHINE Filed June 8, 1932 3 Sheets-Sheet l //v VE/V 70/1.

March 13, 1934. c oop 1,950,554

' FASTENING INSERTING MACHINE Filed June 8, 1932 3 Sheets-Sheet 2 //v VE/V mm Mm Z r W March 13, 1934. Q HOOD 135%554 FASTENING INSERTING MACHINE Filed June 8, 1932 3 Sheets-Sheet 3 Fig. 11. U

W0 O :42 i a o 93 //V VE/V 70R Patented Mar. 13, 1934 UNITE STTES OFFIC FASTENING INSERTING MACHINE Application June 8, 1932, Serial No. 616,060

Claims.

This invention relates to fastening inserting machines and is illustrated herein as embodied in a machine arranged to sever fibre pegs from a strip of fibre material and to insert the pegs g in the sole portions of shoes.

When inserting fibre pegs to secure together parts of shoe bottoms it is often desirable that the lengths of the pegs be varied in accordance with the thickness of the different portions of 1c the shoe bottoms into which they are driven. This gives the pegs maximum holding power and insures that they will not pull out even from thin insoles. The heel seats of, for example, Goodyear welt shoes, are nailed or pegged on the 3.5 last and, accordingly, it is impossible to caliper the thickness of the shoe bottom as might be done if the operation were performed off the last. It is practicable, however, as illustrated in United States Letters Patent No. 1,847,525, granted March 1, 1932, on application of Fred C. Eastman and in United States Letters Patent No. 1,849,253, granted March 15, 1932 on application of Fred N. La Chapelle, to utilize the awl of a fastening inserting machine to measure the thickness of shoe bottoms, the awl coming to rest when it meets an excessive resistance, as when it strikes an impenetrable member back of the shoe bottom, such as the metal heel plate or bottom plate of a last. 0 It is an object of the present invention to provide improved means applicable, for example, to machines of the type used for heel seat nailing, by which the awl may be permitted to come to rest without injury to the machine when the awl meets excessive resistance, for example when the awl has passed through a shoe bottom and strikes the iron heel plate of a last on which the shoe is mounted.

In accordance with this object, a feature of the invention comprises awl reciprocating mechanism including pivoted means, illustrated as a latch connection serving to transmit work penetrating movement to the awl and arranged to move angularly and permit the awl to come to rest when the awl meets excessive resistance in its work penetrating movement.

While the invention is illustrated herein as embodied in a fastening inserting machine particularly adapted to drive fibre pegs in sole portions of shoes, for example in heel seat pegging, it should be noted that the invention is not limited in its utility to such use or to embodiment in fastening inserting machines of the type illustrated and, accordingly, the machine disclosed herein should be regarded as merely one example of the forms in which my invention may be embodied.

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

In the drawings,

Fig. 1 is a side elevation of the head of a peg inserting machine illustrating one embodiment of the invention;

Fig. 2 is a side elevation on a larger scale than Fig. 1 of mechanism which transmits work penetrating movement of the awl of the machine and is arranged to yield when excessive resistance in its work penetrating movement is met by the awl;

Fig. 3 is a side elevation of the machine illustrating the fastening feeding mechanism;

Fig. 4 is a front elevation of the head of the machine of Fig. 1; and

Fig. 5 is a plan View on an enlarged scale showing the connections between the awl mechanism and the mechanism for feeding the fastening material.

The illustrated machine is of the type disclosed in United States Letters Patent No. 1,030,- 775, granted June 25, 1912, on an application filed in the name of George Goddu, though organized to insert fibre pegs separate from a strip of fastening material, such as paper twine, instead of loose nails. The machine may advantageously be equipped with a work support of the character disclosed in United States Letters Patent No. 1,587,848, granted June 3, 1926, on application of Fred L. MacKenzie, the pressure relieving mechanism being modified, if desired, as shown in Figs. 23 and 24 of Letters Patent of the United States No. 1,686,808, granted ()ctober 9, 1928 on application of George Goddu and Fred L. MacKenzie. Reference may be had to these patents for a full disclosure of such parts of the machine as it is unnecessary to illustrate herein.

The illustrated machine is provided with a column 10 carrying a head 12 on which are mounted the fastening inserting instrumentalities of the machine. The column 10 also carries a work support terminating in a last pin 14 (Figs. 2 and 3) arranged to support a work piece such as a shoe 18 with its sole 20 in engagement with an abutment or presser plate 22 carried by the head 12 of the machine. The shoe may be positioned relatively to the fastening inserting instrumentalities of the machine by a gage 24 of any suitable form and which is also carried by the head 12 of the machine.

' against the roll 94.

, ,lever 84, as shown in Fig. 1.

Mounted in suitable bearings carried by the head 12 of the machine is a cam shaft 30 carrying a cam member 32 provided with a series of cam grooves and surfaces arranged to operate the moving parts of the machine. Loose upon the cam shaft 30 near the rear end thereof is a pulley 36 driven from any suitable source of power by a belt 37. A clutch of the type disclosed in Letters Patent No. 1,030,775, above referred to, is mounted on the shaft 30 and connected to a treadle rod 38 which, when depressed, operates through the clutch to cause the machine to perform its cycle of operations.

The machine is provided with a driver bar 40 (Figs. 3 and 4) mounted for reciprocating movement in ways carried by the head 12 adjacent to the forward end of the shaft 30. Clamped to the lower end of the driver bar 40 is a driver 42. The driver bar 40 is provided at its upper end with a rack meshing with a gear segment formed upon the end of a forwardly extending arm of a bell crank lever 46 fulcrumed at 48 to the head 12 of the machine and having a depending arm which carries at its lower end a roll positioned in a cam track 50 formed in the cam member 32. For a more complete description of the driver bar operating mechanism reference may be had to United States Letters Patent No. 1,847,525, granted March 1, 1932, on application of Fred C. Eastman.

An awl bar carrier 52 is mounted for horizontal sliding movement at the front of the head 12 of the machine, and mounted for vertical sliding movement in ways formed in the awl bar car- ;rier 52 is an awl bar 54 carrying at its lower end an awl 56. The rear surface of the awl bar 54 is provided with a rack 58 meshing with a gear segment 60 formed upon the forward end of a lever 62 fulcrumed at 64 to the head 12 of the machine and provided with a pair of rearwardly extending arms 66 and 68. The awl bar carrier is reciprocated transversely of the machine by a lever '70 fulcrumed to the head 12 of the machine and carrying a roll (not shown) and positioned in a cam groove formed in the rear surface of a cam disk 72 secured in the forward end of the shaft 30.

The arm 68 of the lever 62 is pivotally connected to a bell crank 74 fulcrumed at 76 to the head of the machine and carrying a cam roll positioned in a cam track 78 formed in the cam member 32 by connections shown in Figs. 1, 2 and 5. These connections comprise a link 80 the upper end of which is adiustably secured in a slot 82 formed in the bell crank lever '74. The lower end of the link 88 is forked to enclose a bell crank lever 84 the members of which are pivoted between the opposite walls of the forked, right-hand end portion of the arm 68 integral with a shaft 88 (Fig. 5) through which the awl bar is operated. The lefthand end portion of the arm 68 is formed as a cylindrical casing 86 and houses a spring 90 which acts through a washer 92 and a roll 94 to keep the latch members in engagement with each other, the tension of the spring 90 being adjusted by means of an adjusting nut 95 positioned in the left-hand end of the casing 88. The adjusting member or nut 95 is. maintained in adjusted position by a clamping screw 93. A latch member 96 ;is pivoted to the lower, right-hand end of the casing 86 and has a cam surface9'7 which bears The other side of the latch 96 is provided with a notch 98 which fits into the free end of the arm 99 of the small bell crank The roll 94 bearing against latch member 96 holds the arm 99 of the bell crank lever 84 in the notch 98 until the pressure on the awl 56 caused by meeting an excessive resistance is greater than the pressure of the spring 90 holding the end of the arm 99 in the notch 98. The surface 100 above the notch 98 in the latch 96 is formed on a radius equal to the length of the arm 99 of the bell crank 84 so that when the awl 56 strikes the bottom plate on the last the end of the arm 99 of the bell crank 84 will be forced out of the notch 96 and will ride along the surface 100, thus permitting the link 80 which is positively connected to the bell crank '74 to move without causing any further movement of the shaft 88.

The link 80 is connected to the casing 86 through the bell crank lever 84. The lower forked end of the link 80 is pivoted to the bell crank 84 at 102 and the bell crank 84 is pivoted to the right-hand forked end of the casing 86 at 104. The parts of the mechanism are mounted in the position shown in Fig. 1, that is, the free end of the bell crank lever 84 engages the notch 98 and held in such a position by the action of the spring 90 on the latch 96. In the operation of the machine the link 80 is moved upwardly by the cam operated bell crank '74. With the latch members 84 and 96 in locked position upward movement of the connecting link 80 causes the shaft 88 through which the awl bar is operated 105 to rotate, thus moving the awl bar and the awl 5O downwardly, the awl 50 penetrating the work which is clamped between the abutment plate 22 and the work support. When, however, the awl in its work penetrating movement encounters a predetermined resistance the force of which is greater than the opposing force of the spring 90, the spring 90 yields, the member 84 is moved out of the notch 98, and the awl bar 52 and the awl 50 are brought to rest. Further upward movement of the link 80 causes the small bell crank lever 84 to rotate relatively to the latch 96, the end of the free arm of the bell crank lever 94 moving over the arcuate surface 100 formed on the latch 96. With the locking member in the last-mentioned position the arcuate face 100 is illustrated as concentric with the fulcrum 104 of the small bell crank 84 or, if desired, it may be so formed that the latch spring 90 will be further compressed to prevent rebound of the awl bar 52 and the-awl 50. When the connecting link 80 in its reverse movement has returned the members 84 and 96 to their initial positions relatively to each other, a pair of steps 106 formed on the upper portion of the lower forked end of the link 130 80 engages the upper side walls of the forked right-hand end portion of the casing 86 and further downward movement of the link 80 returns the shaft 88, the awl bar 52, and the awl 50 to their initial positions, as shown in Fig. 1.

The fibre fastening material 107, from which the pegs inserted by the machine are severed, is carried by a reel (not shown) secured to the head 12 of the machine. The strip 107 of fibre fastening material is engaged by a feed dog 108 141? (Fig. 4) on the feeding mechanism and fed past a spring pressed holding dog 110 designed to prevent retrograde movement of the fastening material after which it enters a passageway, the

lower end of which is in alinement with the driver 14;.

passage of a forwardly and rearwardly reciprocating throat member. Forward movement of the throat member thus serves to sever a peg from the fastening material 108, and the length of this peg is determined by the awl stroke, that is, by

the distance which the awl has penetrated the work before being brought to rest by striking the metal heel plate of the last. The throat member is mounted for forward and rearward movement in ways carried by the head 12 of the machine and provided near its rear end with a rack engaging a gear segment as described in United States Letters Patent No. 1,847,525, above referred to. As shown most clearly in Fig. 3, the strip feeding mechanism is connected to the awl operating mechanism by means of a system of cranks and levers. The end of the arm '66 is provided with a gear segment 112 which meshes with a gear segment 114 mounted on the end of an arm 116 of the bell crank lever 118. The other arm 120 of the bell crank lever 118 is connected to a bell crank lever 122 by a link 124. The operation and adjustment of these parts is not described herein since it is clearly described in the above-mentioned Letters Patent No. 1,847,- 525, to which reference may be had for a more complete description of these parts.

In the operation of the machine the last 18, upon which the shoe 16 is mounted, is placed upon the last pin 14 of the work support, the shoe being positioned by the gage 24 in the manner usual in performing the heel seat nailing operation. When the machine is started the awl 5D punches a hole in the shoe being thrust downwardly into the sole until its lower end comes substantially into contact with the metal heel plate of the last. When the awl strikes the metal, bottom plate of the last the end of the bell crank 84 moves relatively to the latch 96, thereby permitting further movement of the link while the awl 50 remains at rest.

The awl 50 is then moved transversely toward the left, as viewed in Fig. 4, feeding the work piece and bringing the awl into the line of drive. The awl is then withdrawn and returned to the position which it occupied at the beginning of the cycle of operation. The work penetrating movement of the awl, which has just been described, is eifective through the connection be tween the awl bar 52 and the lever 122 to rock the lever 122 in a clockwise direction, as viewed in Fig. 3, to a position which is determined by the thickness of the shoe bottom, thus controlling the angular relation between the link 124 and the lever 120, so that rocking movement of the lever 62 rocks the lever 122 to a suincient extent to cause the latter to move the block 126 through a path which causes the feed dog 108 and a surface formed on the block 126 with which the feed dog 108 co-operates to feed the fastening material a distance equal to or, if desired, slightly more than, the thickness of the shoe bottom parts which the awl 50 penetrates. The fastening material is then severed by the forward movement of the throat member and is brought forward into line with the driver 42 which descends to drive the fastening into the hole formed by the awl 50 in the shoe bottom.

Having thus described my invention, what I claim as new and desire to secure by Letter Patent move angularly when the awl meets an excessive resistance, thereby permitting the awl to come to rest, a driver for inserting fastenings in the holes formed by the awl, and means for operating the awl to feed the work piece with the holes in said work piece in alinement with the path of movement of said driver.

.2. In a fastening inserting machine, the combination of an awl, means for operating the awl to form fastening receiving holes in a workpiece presented thereto including a bell crank lever pivoted to the awl operating means and a second lever for holding the bell crank substantially sta tionary relatively to the awl operating means during the work penetrating movement of the awl but arranged to swing about its pivot when the awl meets an excessive resistance in its work penetrating movement, thereby permitting the awl to come to rest, and means for operating the awl to feed the work piece.

3. In a fastening inserting machine, the combination of an awl, means for operating the awl to form fastening receiving holes in a work piece presented thereto including a pair of levers bodily movable to transmit Work penetrating movement to the awl and arranged to move angularly when the awl meets an excessive resistance in its work penetrating movement, a driver, and means for operating the driver to drive fastenings into the holes formed by the awl.

4. In a fastening inserting machine, the combination of an awl carrier, an awl carried thereby, means for reciprocating the awl carrier including a pair of levers bodily movable to transmit reciprocating motion to the awl carrier and arranged to move angularly when the awl meets an excessive resistance, a driver, means for operating the driver to insert fastenings in the holes formed by the awl, and means for presenting to the driver fastenings of a length corresponding to the depth of the respective holes formed by the awl.

5. In a fastening inserting machine, the combination of an awl, means for operating the awl to form fastening receiving holes in a work piece presented thereto including a connection substantially stationary relatively to the operating means during the work penetrating movement of the awl but constructed and arranged to move angularly relatively to said means when the awl meets an excessive resistance in its work penetrating movement, and means for operating the awl to feed the work piece.

6. In a fastening inserting machine, the com-- bination of an awl, means for operating the awl to form fastening receiving holes in a work piece presented thereto including a latch connection movable bodily to transmit work penetrating movement to the awl and arranged to move angularly relatively to the operating means when the awl meet an excessive resistance in its work penetrating movement, and means for operating the awl to feed the work piece.

7. A fastening inserting machine having, in combination, an awl carrier, an awl carried thereby, means for causing the awl to penetrate a work piece including a pivoted connection movable bodily and arranged to swing about its pivot when the awl meets an excessive resistance, a driver, and means for operating the driver to insert fastenings in the holes formed in the Work piece by the awl.

8. In a fastening inserting machine, an awl carrier, an awl carried thereby, cam operated means including a pair of levers for reciprocating the awl carrier thereby thrusting the awl into the work, said levers being arranged to swing about their pivots when the awl meets an excessive resistance, and means for inserting fastenings in the holes formed by the awl.

9. In a fastening inserting machine, an awl carrier, an awl carried thereby, a cam operated bell crank lever operating through a double lever connection to thrust the awl into the work, said pivoted connection being constructed and arranged to move bodily when the awl is penetrating the work but arranged to move angularly when the awl meets an excessive resistance, and means for inserting fastenings in the holes formed by the awl.

10. In a fastening inserting machine, an awl carrier, an awl carried thereby, a cam operated bell crank lever operated through a pivoted connection to thrust the awl into the work, said connection including a lever connected to the awl carrier, a bell crank lever fulcrumed to the free arm of said last-mentioned lever, a link secured at one end to the cam operated bell crank lever and at its other end to one arm of the bell crank lever fulcrumed to the free arm when the awl is penetrating the work but arranged to permit said link and lever to move relatively to each other when the awl meets an excessive resistance.

11. In a fastening inserting machine, an awl carrier, an awl carried thereby, and a cam operated bell crank lever operating through a connection to thrust the awl into the work, said connection including a lever connected to the awl carrier, a link secured at one end to the cam operated bell crank lever and at its other end to one arm of a bell crank lever fulcrumed on the lever connected to the awl car-rier, said bell crank lever being fulcrumed to one arm of the lever connected to the awl carrier, and means for looking the bell crank lever arranged to prevent the link and the leverco-nnected to the awl carrier from moving bodily relatively to each other When the awl is penetrating the work but arranged to permit them to move bodily relatively to each other when the awl meets an excessive resistance.

12. In a fastening inserting machine, the combination of an awl, and a cam operated lever operating through a pivoted connection to thrust a lever connected to the awl, a link connected to the cam operated lever, and a locking mechanism between the link and the lever connected to the awl arranged to be held in locked position when the awl is penetrating the work but arranged to be unlocked to permit relative angular movement between the link and the lever connected to the awl when the awl meets an excessive resistance.

13. In a fastening inserting machine, the combination of an awl, and a cam operated lever operating through a pivoted connection to thrust the awl into the work, said connection including a lever positively connected to the awl, a link connected to the cam operated lever, a latch mounted on the lever connected to the awl, a bell crank lever fulcrumed on the lever connected to the awl, said last-mentioned bell crank lever being also connected to said link and a spring normally holding the latch and the last-mentioned bell crank lever in locked engagement when the awl is penetrating the work but arranged to be disengaged to permit relative movement between the link and the lever connected to the awl when the awl meets an excessive resistance.

14. In a fastening inserting machine, an awl carrier, an awl carried thereby, a power operated cam shaft, a bell crank lever connected to the cam shaft, a lever secured to the awl carrier, a link secured to the cam operated bell crank lever, a latch carried by the lever connected to the awl carrier, a bell crank lever mounted on said last-mentioned lever and adapted to engage the latch to lock the parts in a predetermined relation whereby said connections move as a unit when the awl is penetrating the work but permit the awl to come to rest when t awl meets an excessive resistance, and means for inserting fastenings in the holes formed by the awl.

15. Ina fastening inserting machine, an awl carrier, an awl carried thereby, a power operated cam shaft, a bell crank lever connected to the cam shaft, a lever connected to the awl carrier, a link secured to the cam operated lever, a latch carried by the lever connected to the awl carrier, a bell crank lever mounted on said lastmentioned lever, a spring normally urging said latch into engagement with said last-mentioned bell crank lever whereby the connections between the cam shaft and the awl carrier move as a unit when the awl is penetrating the work but move bodily relatively to each other when the awl meets an excessive resistance, and means for inserting fastenings in the holes formed by the awl.

CHARLES E. HOOD.

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