US968755A

US968755A - Tack-pulling machine.

Info

Publication number: US968755A
Application number: US39931207A
Authority: US
Inventors: Andrew Eppler
Original assignee: United Shoe Machinery Co AB
Current assignee: USM Ltd; United Shoe Machinery Co AB
Priority date: 1907-10-26
Filing date: 1907-10-26
Publication date: 1910-08-30
Anticipated expiration: 1927-08-30

Description

A. EPPLER.

TACK PULLING MACHINE.

APPLICATION FILED 00121;,1901

Patented Aug. 30, 1910.

4 SHEETS-SHEET 1.

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TACK PULLING MACHINE.

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968,755.. Patented Aug. 30, 1910.

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APPLIOATIOF TILED 001226, 1907.

Patented Au 30, 1910.

4 SHEETS-SHEET 3.

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A. EPPLER.

TACK PULLING MACHINE.

APPLICATION FILED 00T.28,1907.

Patented Aug. 30,1910. 7

4 SHEETS-SHEET 4.

UNITED STATES PATENT OFFICE.

ANDREW EPPLER, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MA- CHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

TACK-PULLING MACHINE.

To all whom it may concern:

Be it known that I, ANDREW EPPLER, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Tack-Pulling Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to tack pulling machines and more particularly to a machine for pulling from a lasted shoe the insole tacks which are driven through the insole at or near its medial line into the bottom of the last prior to the lasting operation to hold the insole in position.

The tacks which secure the insole of a lasted shoe to the last are driven in flush withthe surface of the sole, and prior to the present invention no machine has been devised by which these tacks can be withdrawn, but the operation of pulling the insole tacks has been performed by means of a hand tool.

The object of the present invention is to provide a machine by which the insole tacks can be readily and quickly pulled from a shoe when held in the hands of an operator and manipulated to present each tack to the action of the tack pulling tool or tools of the machine.

With this object in view the present invention contemplates the provision of a tack pulling tool, or tools, having its working or tack engaging end shaped to dig into the sole of a shoe so as to pass under the head of a tack, together with mechanism for actuating the tool to dig into the sole of the shoe and pull the tack, and means for supporting said mechanism constructed and arranged to permit the shoe to be presented properly to the tool. To avoid injury to the sole as much as possible by the action of the tack pulling tool thereon, it is desirable that a tack be located directly in the path of the tack pulling tool whenever the shoe is moved to a position in which the tool will dig into the sole. Accordingly a feature of the present invention contemplates the provision of guiding or gaging means by which the operator can determine the correct posi- Specification of Letters Patent.

Application filed October 26, 1907.

Patented Aug. 30, 1910. Serial No. 399,312.

tion for the shoe before it is given its final movement to cause the tack to be engaged by the tool. To insure accuracy this gaging means is preferably a foot arranged to engage the sole at the point where the tack to be pulled is located or closely adjacent thereto, and the foot is preferably movably mounted so that the shoe can first be brought into engagement with the foot and thereafter moved with the foot to project theltack into the path of movement of the too The mechanism for actuating the tack pulling tool or tools may operate either continuously or intermittently. It is preferred, however, to operate this mechanism intermittently and to throw it into operation only when a tack is in position to be pulled. It is also preferred to actuate the tack pulling tool or tools but once each time a tack is brought into the pat-h'of movement of the tool, as when the tool is so actuated there is less liability of injury to the sole. In the machine hereinafter specifically described the mechanism for actuating the tack pulling tool is conveniently controlled by the movement of the movable foot which serves as a guiding means to determine the position of the shoe.

In addition to the features of invention above referred to the present invention also consists in certain constructions and arrangements of parts hereinafter described and claimed the advantages of which will be obvious to those skilled in the art from the following description.

The present invention will be clearly understood from an inspection of the accompanying drawings in which Figure 1 is a view in front elevation of a tack pulling machine embodying the several features thereof in their preferred form. Fig. 2 is a view in side elevation of the machine looking from the right. Fig. 3 is a view in side elevation looking from the left. Fig. 4 is a sectional view taken on the line 44 of Fig. 3 looking toward the rear of the machine, and Fig. 5is a detail view of a portion of the starting and stopping mechanism.

The movable tack pulling jaw is indicated at l and is formed upon a downward projecting portion of a lever 2, pivoted at 3 upon the lower end of a vertical reciproeating slide 4. The tack pulling jaw is actuated so as to cause its working end to dig into the surface of the sole of a shoe at one side of the head of a tack and to then pass beneath the head of the tack and rise away from the shoe sole to remove the tack by reciprocating the slide 4 and oscillating the lever 2 in timed relation to the movements of the slide. The slide 4 is reciprocated by means of an eccentric 5 on the driving shaft of the machine and a strap and link 6 connecting the eccentric and the upper end of the slide. To impart the desired oscillating movements to the lever 2 the free end of the lever is connected by means of a link 7 to an arm 8 projecting from a sleeve 9 mounted upon a pivot pin 10, which sleeve is provided with a vertical arm 11 having a roll at its upper end engaging a groove in a cam disk 12 secured to the driving shaft. The shoe is presented to the tool with the surface of the sole in substantially a horizontal plane and the mechanism for reciprocating the slide 4 and oscillating the lever 2 is so arranged that as the slide 4 begins its downward movement, the free end of the lever 2 is raised so that the working end of the tack pulling jaw is pointed downwardly and assumes a position in which it can be thrust into the sole. As the slide 4 reaches the limit of its downward movement the free end of the lever 2 is lowered and the working end of the tack pulling jaw is forced beneath the head of the tack. During the upward movement of the slide 4 the swinging movement of the lever 2 is con tinued but at a slower speed until the tack is drawn from the shoe, the tack pulling movement of the jaw being but slightly inclined from the vertical so that the tack is pulled from the shoe substantially in the direction of its length.

The foot illustrated in the drawings, by which the tack is located in proper position with relation to the tack pulling jaw 1, is indicated at 13. In the construction illustrated in the drawin s this foot is provided with an inclined surface 14 which holds the tack in engagement with the working end of the tack pulling jaw 1 while it is being removed from the shoe. The lower end of the foot forms an abutment to support the tack against the thrust of the tack pulling jaw as the jaw passes beneath the head of the tack, and to insure the engagement of the foot with the side of the head of the tack it is preferably provided with projections or teeth, as indicated at 15, which are forced into the sole at the opposite side of the tack to that engaged by the tack pulling jaw. To enable the tack to be located accurately in proper position with relation to the path of movement of the tack pulling jaw before the jaw engages the sole of the shoe, the foot 13 is mounted in such osition that its lower end normally is in a p ane below the path of movement of the working end of the jaw, and the foot is supported so that it can move from this position to a position in which its lower end is on a level with, or slightly above, the lowest point of the path of movement of the jaw. To this end the jaw is secured to the forward end of a lever 16 pivotally mounted upon the frame of the machine and supported at its rear end by means of a coiled spring 17.

Adjustable stop screws

18 and 19, mounted in projections from the frame of the machine and located on opposite sides of a lateral projection from the rear end of the lever 16, determine the normal lower position of the foot and limit the extent of its upward movement.

In the construction illustrated in the drawings, the foot 13 acts as a jaw to cooperate with the tack pulling aw 1 in pulling a tack from a shoe. To enable thefoot to more effectively withstand the thrust of the tack pulling jaw, the forward end of the lever 16 is preferably supported against lateral movement by means of an abutment- 20 formed by a downward projection on the frame of the machine. During the tack pulling operation the shoe is forced upwardly by the operator and held against the downward thrust of the tack pulling jaw. The lateral thrust of the tack pulling jaw is exerted upon the inclined surface 14 of the foot 13 and this thrust also tends to force the foot downwardly against the upward pressure exerted by the operator. The foot is thus allowed to move so as to accommodate difierent sizes of tacks and thereby the engagement of all sizes of tacks with certainty by the tack pulling jaw is insured and at the same time any liability of injury to either the foot or the aw is obviated.

It is evident that the parts of the machine so far described will operate in a satisfactory manner if the driving shaft is rotated continuously since the tack to be pulled can be located accurately with relation to the tack pulling jaw before being brought into the path of movement of the jaw. The machine as illustrated is, however, provided with means whereby the driving shaft can be thrown into operation after the tack is brought into the proper position with rela tion to the tack pulling jaw and by which it can be thrown out of operation after each tack is pulled. To avoid the necessity of a foot treadle and a separate operation on the part of the operator in throwlng the driving shaft into and out of operation, the movement of the foot 13 is utilized in controlling the rotation of the driving shaft. To this end a clutch releasing rod 21 is provided which passes loosely through the rear end of the lever 16 and which is provided below the lever with adjustable nuts 22 and 23, one of which bears against the lever, and the other of which receives the thrust of the upper end of the spring 17, the construction being such that a downward movement of the rear end of the lever 16, produced by an upward movement of the foot 13, pulls the rod 21 downward. At its upper end the rod 21 is guided by a slot formed in a projection from an arm 2% of a pivotally mounted clutch controlling frame and by a slot formed in a plate 25 secured to an arm 26 of the clutch controlling frame. A notch 27 is formed in one side of the rod 21 near its upper end and when the driving shaft is at rest this notch is held in engagement with the plate 25 by means of a coiled spring 28 connecting the rod 21 and a projection on the clutch controlling frame. In the upper end of the arm 24:, a cushion plunger 29 is mounted, which plunger is arranged to engage a shoulder 30 on a clutch member 31 fast on the driving shaft. Between the clutch member 31 and a constantly rotated belt pulley 32 loosely mounted on the driving shaft, is arranged clutch mechanism of any suitable or well-known construction which is adapted to clutch the pulley to the shaft whenever the plunger 29 is moved out of engagement with the shoulder '30 on the clutch member 31. The plunger 29 is moved out of engagement with the shoulder30 whenever the rod 21 is depressed as will be obvious from an inspection of Fig. 5, the downward movement of the rod acting to swing the clutch controlling frame by reason of the engagement of the notch 27 in the rod with the plate 25 which is secured to the clutch controlling frame. Continued downward movement of the rod after the plunger 29 is disengaged from the shoulder 30, causes the arm 24 of the clutch controlling frame, to swing the rod 21 outwardly to remove the notch 27 from engagement with the plate 25 and thereby release the frame. The clutch member 31 is provided with a peripheral cam surface and upon this surface the side of the plunger 29 rests until the driving shaft has made one complete revolution When the shoulder 30 again engages the upper end of the plunger and the shaft comes torest. To stop the driving shaft gradually and without excessive shock, a brake shoe 33 is pivotally mounted upon an arm 34 of the clutch controlling frame and is arranged to cooperate with a brake disk 35 secured to the driving shaft. When the driving shaft is at rest the brake shoe is held in engagement with the brake disk by means of a springpressed plunger 36 mounted in a guideway in a projection from the frame of the machine and acted upon by a coiled spring 37. During the rotation of the shaft, the brake shoe is held out of engagement with the brake disk by engagement of the peripheral cam surface of the clutch member 31 with the side of the plunger 29.

From the description above given of the mechanism by which the rotation of the driving shaft is controlled by the movements of the foot 13, it will be obvious that the driving shaft is normally at rest and is only thrown into operation after a tack has been located in proper position with relation to the foot and the tack pulling jaw 1 and the shoe has been pressedupwardly to bring the tack into the path of movement of the jaw. As the foot reaches its upward. position, the driving shaft is thrown into operation and makes one complete revolution during which the tack pulling jaw is actuated to pull the tack from the shoe in the manner before described.

The nature and scope of the present invention having been indicated and a machine embodying the several features thereof in their preferred form having been specifically described, what is claimed is 1. A machine for pulling insole tacks from a lasted shoe, having, in combination, a tack pulling tool provided with a working end shaped to dig into the sole of a shoe and pass beneath the head of a tack, mechanism for actuating the tool to dig into the sole of a shoe and engage a tack and pull the tack from the shoe, and means for supporting said mechanism constructed and arranged to permit the shoe to be presented properly to the tool.

2. A machine for pulling insole tacks from a lasted shoe, having, in combination, a tack pulling tool provided with a working end shaped to dig into the sole of a shoe and pass beneath the head of a tack, gaging means to determine the correct position for the shoe before it is moved to bring the tack into the path of movement of the tool, and mechanism for actuating the tool to dig into the sole of a.shoe and engage the tack and pull the tack from the shoe.

3. A machine for pulling insole tacks from a lasted shoe, having, in combination, a tack pulling tool provided with a working end shaped to dig into the sole of a shoe and pass beneath the head of a tack, gaging means arranged to bear against the sole of the shoe and determine the correct position for the shoe before it is moved to bring the tack into the path of movement of the tool, and mechanism for actuating the tool to dig into the sole of a shoe and engage a tack and pull the tack from the shoe.

4. A machine for pulling insole tacks from a lasted shoe, having, in combination, a tack pulling tool provided with a working end shaped to dig into the sole of a shoe and pass beneath the head of a tack, a foot arranged to engage the surface of the sole close to the tack which is to be pulled and determine the correct position for the shoe, and mechanism for actuating the tool to dig into the sole of a shoe and engage a tack and pull the tack from the shoe.

5. machine for pulling insole tacks from a lasted shoe, having, in combination, a tack pulling tool provided with a working end shaped to dig into the sole of a shoe and pass beneath the head of a tack, a yielding foot arranged to engage the surface of the sole close to the tack which is to be pulled and determine the correct position of the shoe before it is moved to bring the tack into the path of movement of the tool, said foot moving with the shoe when the tack is projected into the path of movement of the tool, and mechanism for actuating the tool to dig into the sole of a shoe and engage the tack and pull the tack from the shoe.

6. A machine for pulling insole tacks from a lasted shoe, having, in combination, a tack pulling tool provided with a Working end shaped to dig into the sole of a shoe and pass beneath the head of a tack, mechanism for actuating the tool to dig into the sole of a shoe and engage a tack and pull the tack from the shoe, and means actuated by the movement of the shoe when presented to the tool to throw said mechanism into operation.

7. A machine for pulling insole tacks from a lasted shoe, having, in combination, a tack pulling tool provided with a working end shaped to dig into the sole of a shoe and pass beneath the head of a tack, mechanism for actuating the tool to dig into the sole of a shoe and engage a tack and pull the tack from the shoe, a yielding gaging foot arranged to engage the sole close to the tack to be pulled while the tack is out of the path of movement of the tool, and movable with the shoe when the tack is projected into the path of movement of the tool, and connections between the foot and tool actuating mechanism for controlling the operation of said mechanism.

8. A machine for pulling insole tacks from a lasted shoe, having, in combination, a tack pulling tool rovided with a working end shaped to dig into the sole of a shoe and pass beneath the head of a tack, a yielding gaging foot arranged to engage the sole close to the tack to be pulled while the tack is out of the path of movement of the tool,

and movable with the shoe when the tack is projected into the path of movement of the tool, mechanism for actuating the tool to en gage a tack and pull the tack from the shoe, means actuated by the movement of the foot to throw the tool actuating mechanism into ope-ration, and means for automatically throwing said mechanism out of operatlon.

9. A machine for pulling insole tacks from a lasted shoe, having, in combination, a tack pulling jaw mechanism for actuating said jaw to engage a tack and pull the tack from the shoe, a foot arranged to support the tack against the thrust of the tack pulling jaw, and means to movably support said foot to allowit to move in the direction of the length of a tack to accommodate itself to the size of the tack.

10. A machine for pulling insole tacks from a lasted shoe, having, in combination, a tack pulling jaw constructed to dig into the sole of a shoe and ass beneath the head of a tack, mechanism or actuating the jaw to dig into the sole of a shoe and engage a tack and pull the tack from the shoe, and a gaging foot arranged to en age the sole close to the tack which is to e pulled and support the tack against the thrust of the tack pulling jaw.

11. A machine for pulling insole tacks from a lasted shoe, having, in combination, a tack pulling jaw constructed to dig into the sole of a shoe and pass beneath the head of a tack, mechanism for actuating the jaw to engage a tack and pull the tack from the shoe, a yieldingly mounted gaging foot arranged to engage the sole close to the tack to be pulled while the tack is out of the path of movement of the tool, and to be moved with the shoe when the tack is projected into the path of movement of the tool, said foot being constructed to support the tack against the thrust of the tack pulling jaw.

12. A machine for pulling insole tacks from a lasted shoe, having, in combination, a tack pulling jaw constructed to dig into the sole of a shoe and pass beneath the head of a tack, mechanism for actuating the jaw to engage a tack and pull the tack from the shoe, a yieldingly mounted gaging foot arranged to engage the sole close to the tack to be pulled while the tack is out of the path of movement of the tool, and to be moved with the shoe when the tack is projected into the path of movement of the tool, said foot being constructed to support the tack against the thrust of the tack pulling jaw, and means actuated by the movement of the yielding foot to throw the tool actuating mechanism into operation.

13. A machine for pulling insole tacks from a lasted shoe, having, in combination, a tack pulling jaw constructed to dig into the sole of a shoe and pass beneath the head of a tack, mechanism for actuating the jaw to engage a tack and pull the tack from the shoe, and a foot arranged to support the tack against the thrust of the tack pulling jaw provided with a projection to enter the sole close to the tack.

14. A machine for pulling insole tacks from a lasted shoe, having, in combination, a tack pulling tool and gaging means relatively movable to bring the tack in the sole of a shoe into the path of movement of the tool, the working end of the tool bein shaped to dig into the sole of the shoe and pass beneath the head of the tack, and mech anism for actuating the tool to dig into the sole of a. shoe and engage a tack and pull the tack from the shoe.

15. A machine for pulling insole tacks from a lasted shoe, having, in combination,

work for limiting the efiective tack-engaging position of said tool with relation to the work.

17. The combination with means to dig under the head of a tack and move the tack, of a movable gage arranged to guard the tack-engaging ortion of said means for limiting the e ective digging movement thereof with relation to the work.

18. The combination with means to dig under the head of a tack and move the tack, of a spring-controlled gage arranged to guard the tack-engaging portion of said means for limiting the effective digging movement thereof with relation to the work.

19. In a machine of the kind described, tack-pulling mechanism, including a pointed digging tool adapted to dig under the head of a tack when embedded in an insole, and means to move the pointed end of said tool obliquely downward and forward under the head ofthe tack and thence sharply upward almost but not quite vertical, so as to pull the tack without appreciable forward tack-pushing movement with relation to the work.

20. A machine of the kind described, comprising a tack pulling tool, operating means therefor, a movable work gage to determine the position of the work with relation to the tool and a stop to limit the movement of the gage and determine the depth to which the tool shall penetrate the work.

21. A machine of the kind described, comprising a tack pulling tool, operating means therefor, a movable work gage to determine the position of the Work with relation to the tool, and a stop for limiting the movement of the gage in each direction.

22. A machine of the kind described, comprising a tack pulling tool, operating means therefor, a yielding work gage to determine the position of the work with relation to the tool, and a stop for limiting the yielding movement of the gage.

23. A machine for pulling insole tacks from a lasted shoe, having, in combination, a tack pulling tool and gaging means relatively movable to bring the tack in the sole of the shoe into the path of movement of the tool, a stop to limit the extent of such relative movement, and mechanism for actuating the tool to dig into the sole of the shoe and engage a tack and pull the tack from the shoe.

In testimony whereof I affix my signature, in presence of two witnesses.

ANDREW EPPLER.

WVitnesses:

FRED O. FISH, ANNIE C. RICHARDSON.