US1036269A - Tack-pulling machine. - Google Patents

Description

W. B. KEIGHLEY. TAGK PULLING MACHINE. APPLICATION FILED 8 EPT..10, 1909.

Patented Aug. 20, 1912.

TAGK-PULLING MAcHiNE.

Specification of Letters Patent.

Patented Aug. 20, 1912.

Application filed September 10, 1909. Serial No. 517,057.

To all whom it may concern:

Be it known that LWILLIAM B. KEIGHLEY,

. a citizen ofthe United States, residing in Vineland, New Jersey, have invented certain Improvements in Tack-Pulling Machines, of which the following is a specification.

invention relates to machinery employed in connection wit-hthe manufacture of shoes and more particularly has to-do with machines designed to remove the tacks used to hold the upper, etc., to the last and insole after such partsahave been lasted together so as to no longer require the sup port of said tacks. s

1 One object of my invention is to provide a machine of the above noted character, which shall be capable of automatically acting to withdraw the tacks from a shoe in process of manufacture, and which shall be of such construction as to perform this function with certainty and at a relatively high a speed.

I further desire to provide a tack pulling machine of such construction that it shall be capable of certainly clearing itself of the tacks after their removal from the shoe operated on, and which shall be of a relatively simplr :ompact and inexpensiveconstruction.

'Another object .of my invetion is to provide a tack pulling machine particularly designed to ',operate in connection with the shoe trimming machine described and claimed in Patent #928,l33, dated July 10,

These objects and ether advantageoue ends I secure as hereinafter set forth, refer ence being had to the accompanying drawings, in which 4 Figure 1, is a side elevation, partly in section, showing my invention as employed in connection with a shoe'trimming machine; Fig. 2, is a plan. of the machine shown in Fig. l, and, Fig. 3, is a front elevation of a part of the machine.

' In the above drawings, 1 is a portion of the work table of a band knife machine for patent above noted although if desired it may consist of a separate bracket or, base for attachment to such a table. The band knife is indicated at 2 and operates in connection with a work supporting post 3, adjustably mounted on said base, so as to be honizontally movable in a line at right angles to this post so that it extends into engagement with one side of the band knife 2;, its end being beveled sothat it is substantially par to act against this bar so as to continually force it toward the knife. The post 3 also carries guards -6 and 7, extending around said knife for the protection of operators, and said guards may be so mounted as to be adjustable in any desired manner;

The base 1 is provided with an undercut slot also extending at right angles to the operating run of the knife and designed for the reception of a block 8 on which is mounted a vertically extending bar 9. This latter carries a vertically adjustable head 10 having a suitable bearing for the reception of said bar to which it is clamped by means of a bolt 11.

The head is substantially T-form and at a bearing" for a spindle 12, on which are fixed a crank 13 and a driving pulley 14; the latter being connected to a source of power suitable for turning the spindle at the desired speed. At theother end of the top member of the head 10; is mounted a horizontal pivot spindle 14 to one end of which is" fixed a guide 15.

A rod 16 has one end constructed for the reception of the pin 17 of the crank 13 and its other. end fits into the guide 15; being formed -for the reception of a tack pulling the various partsibeing such that the th'row of the crank is'sufiicient to project the operband knife 2. 1 s

Under working conditions, the block 8 is at a'suitable speed, said claw 18' will be caused to operate immediately in advance of the band knife ;that is to say, it will remove tacks from any given part of the shoe just-before this particularpart is operated method of supporting and actuating the rod 16 .and its attaching claw, the latter, which is substantially L-shaped with its teeth pointed downward, is first advanced and then lowered vi'n'the act of engaging a tack ortacks, as shown in dotted lines in Fig. 1. Immediately thereafter it is drawn away .from the shoe and as the crank continues its .one end of'its top member is provided withclaw 18;the positions and dimensions of so adjusted that when the pulley 14 is turned movement, said claw'is projected toward said knife. An inclined bar 4 is carried by allel with said side, and a spring 5 is placed ating end ofthe claw 18 into \the plane of the 4 on by said knife. Moreover, owing tothe said shoe with a rapid upward movement which serves to very effectually discharge the tack from its teeth, so that these latter are not liable to become clogged, but are at 5 alrlil times in condition for rapid work on a The downward/and rearward movement of the claw at the time of its engagement with the tacks has been found to be. best adapted fortheir removal from a shoe and particularly when the device is used at the same time that surplus material is. :being trimmed from such shoe by means of the band knife. The speed of operation or number of strokes of the claw is so regulated that it is a practical impossibility for it to missany of the tacks and there is conse-c quently no danger of any of these being left in position 'to cause possible injury to the band knife. 7

While both the work supporting post 3- and the tack post 9 are so mounted on the base 1 as to be independently adjustable, I

preferably support the end of the spring '5' which acts upon the bar 4, by means of an' adjustable screw 19 mounted in the block 8 and maintained in any desired position by means of nuts 20. By suitably adjusting said screw, the pressure with which the bar 4 bears against the knife 2 may be regulated. I

While as noted, I preferably employ my improved tack pulling machine in connection with a band knife machine for trimming the surplus material from shoes, it is to be understood that said machine is-by no means limited to use in such a combination,

as it is obvious that in many cases it may, with equal advantage, be employed to re- 4 0 move tacks independently of any other device of It will be noted that by the particular construction and arrangement of parts above descrlbed, the tack pulling claw acts upon each tack so as to vwithdraw it in a line substantially the same as that in which it was originally driven by the laster. Owing to the factthat the tack pulling machine and band knife act simultaneously upon a shoe, the former aids inholding said shoe in the proper position upon the work support ing post, since this pulling action upon the tacks actually draws the shoe toward the band knife. It. is of'course obvious that by adjusting the claw in or out upon" its supporting rod andby adjustingthe various support-ing structures, the device -,may be quickly adapted to operate upon work in which the tacks are set in any of a number of different positions.

I claim 1. A tack pulling device consisting of a supporting structure; a guide pivoted thereto; a rod slidable in the guide; a claw on said rod; and a crank on which said rod is pivotally mounted, for moving said claw successively forward, downyand to the rear. 2. A tack pulling machine consisting of a supporting structure; a tubular oscillatory guide mounted on said structure; a rod slidable in said guide; an L-shaped claw attached to the rod; and a crank on which said rod is pivotally mounted for actuating the same to cause the claw to move successively forward, down andito the rear,

8. The combination of a supporting structure; a guide mounted thereon so. as to be free to oscillate; a rod having one end slid- I able on the guide; a claw carried by the rod a crank having the rod pivotally mounted on its pin for oscillating said rod and simultaneously giving it a longitudinal movement; and a work supporting post mounted adjacent the path'of movement of'the claw; said driving means including a device for mow ing the claw successively toward the post, down, and then-to the rear to said post.

' 4. The combinationof a supporting structure having a T-shaped head, a supporting spindle to which one branch ofsaid head is connected, two spindles mounted in bearings. in said'head one of said spindles having adriving pulley and a crank the other spindle having a guide fixed to it, .a rod having one.

end connected to the pin of the crank, and'its second end slidably mounted in the guide, with a tack extracting-claw attached to said second end.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

WILLIAM B. KEIGHLEY.

Witnesses:

WILLIAM E, BRADLEY WM. A, BARR;

Copies of this patent may be obtained for fi-VE, cents each, by addressing the Commissioner of Iatents,

- Washington, I). G.

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