USRE7969E - Machine- association - Google Patents

Description

2 Sheets-Sheet 1.

E. T. GREEN.

Asslgnor, by mesne assignments, to J. W. BROOKS, trustee of the McKay &.Bige10w' Heeling Machine Association.

Manhine' for Cutting Boot and Shoe Heels.

VVI 7 I7EESEfE.

hflns. {M M 1 2 Sheets-Sheet. 2. E. T. GREEN. manta, t0 J. W. BROOKS, trustee Heeling Machine Association.

Boot and Shoe Hee1s. Reissued Nov. 27,1877.

Assignor, by mesne assign of the McKay & Bigelow Machine for Cutting No. 7,969.

UNITED STATES PATENT OFFICE.

ELISHA T.- enEEn, or sronnnan, MASSACHUSETTS, assrenon, BY MESNE ASSIGNMENTS, ro JAMES w. BROOKS, TRUSTEE or THE MOKAY & BieELow nEELine MACHINE ASSOCIATION.

lmrsovrnrrr m MACHINES For currme 801.1 AND-SHOE HEELS.

Specification forming part of Letters Patent No. 30,356, dated October 9, 1860 extended seven years; Reissue No. 1,969, dated November 27, 1877; application filed November 16, 11577.

To all whom it may concern: 1

Be it known. that I, ELISHA T. GREEN, of Stonehani, in the county of Middlcsex and State of Massachusetts, have invented certain new and useful improvements in such inachines as form or shape the heels of boots and shoes by cutting or trimming them when they are made, fast thereto; and I do hereby declare that the following is a clear, full, and exact description of my said invention, reference being had to the accompanying drawings which form part of this specification.

I have embodied my inventionin a machine I which contains the following instrlnncntalities,

viz: first, a holding mechanism composed of two parts, one a support at the inside of the.

shoe, and the other aplote placed at the heellift end of the heel, the heel to be trimmed bein g held between such support and plate, such two parts being also movable, one with relation to the other, to apply and remove the shoe; second, a knife and its stock so held by or jointed to the mover of the kniie-stock that the knife is free to move toward and from the center of the heel under the action of the guiding-surfaces at the two ends of the heel, that it is free to have a torsional or oscillating movement to adapt itself to the varying slope of the heel caused by diiibrenccs in the relative size and shape of such guiding-stir faces, to thereby trim the heel to the desired shape, while at the same time the knife-stock is so operated upon by the action of a caingroove or cam that the edge of the knife, controlled as to its position by the guiding-surfaces at the two ends ofthe heel, is controlled as 13213116 angle of its presentation to the heel to be trimmed, during the operation of the ma; chine, so that such edge shall cut at substan tially the same angle to the surface of the heel at all parts of its contour; third, a mechanism for applying power to the apparatus to cause the heel to be cut all about by the knife, beginning its out at one corner oi the heel-breast and ending at the other, while the shape of the heel and the angle of the cuttingedge are governed by other instrumentalities.

One iniportant'diilerence between the ma chine herein described and those which preceded it is, that the knife and its stock are guided at three independent points one, a surface at the heel-lift end of the heel; an other, a surface at the heel-seat end. of the heel; and another, acam-groovc or cam of ashape diii'crent iron fthat oi the heel-each of such guiding -points being capable of operating upon the knife without interfering with the operation of the others.

In this invention the knife makes continuous out around the curved boundary of the heel, and does not cut the material into shavings by means of a rotating cutter.

. Figure 1 represents, in front elevation, a machine embodying my invention; Fig. 2, a

plainand 5; 5 a side elevation, thereof.

.4; is a view in perspective, showing the knife, its stock, and the heel; and Fig. 5 is a detail, to be hereinafter referred to.

In Fig. 3 the dotted lines illustrate one part of the holding mechanism moved away from the other part to facilitate changing the shoe or boot.

The suppoit for the inner vportion of the heel and shoe is shown as a last, a, mounted on the end I) of a pin, 3, which enters a hole made in the last. The toe of the shoe is supported on an ordinary toe-rest.

The support for the interior of the shoe is fixed to a slide, 0, guided in suitable ways in the slide 6, and is made adj ustahle in the direction of the length of the last by means of the screw 0, connected with the bed, and the nut j, fixed to the slide.

The portion of the pin which enters the last has a collar or projection, b, which serves as a rest for the last, and below such projection the pin 3 is formed'as a screw, which works in the nut h, attached to the slide 0, and per; mits the adjustment of the heel seat of the shoe to the proper height.

The purpose of the longitudinal and vertical adjustment will be referred to hereinafter.

The plate 2'', to which is connected that portion of the holding mechanism which contains the means for holding the heel-seat end of the heel, is hinged at j to supports 1:, rising from- The stiffening used in the heel part of the counter and the seam at the heel vary in every shoe.

I claim- I 1. In a heel-trimming machine, the combi nation, with the knife or cutter, of a camgroove or cam adapted, substantially as herein described, to control the angle of present-ati'on of the knife to the heel, substantially as and for the purpose set forth.

2. In a -maehinefor trimming the heels of boots and shoes, the combination of the knife and its stock with a cam-groove or cam to control the angle of presentation of the knife to the heel during the operation of trimming, acting together with guiding surfaces at the top and bottom of the heel, the combination being and operating substantially as set forth.

3. In a machine for trimming the heels of boots and shoes, a knifestock joined with its moving devices to permit the free torsional movement, as described, in combination with a guiding-surface at the top of the heel, the knife being also guided at the seat of the heel, substantially as described.

4. Ina machine for trimming the heels of boots and shoes, a knife-stock o'r knife'carrier provided with a joint permitting free torsional movement, a guiding-surface at or near the cutting-edge 0f the proper shape for the top of the heel, in combination with a cam or camgroove to control the angular presentation of the cuttingedge to the heel during the opera tion of trimming, the knife being also guided at the heel-seat end of the heel, substantially as set forth.

5. I11 a machine for trimming the heels of boots and shoes, the combination, with the knife-stock and a cam-groove or cam to automatically vary-the angle of presentation of the edge of the cutter to the heel, of an ad-' jnsting device to adjust the position of, the knife-stock with reference to the heel andthe cam, to operate substantially as shown and described. Y

6. A heel-trimming machine embodying the following instrumentalities, viz: holding or clam ping mechanism made in two parts, to be separated for the introduction and removal of a heel, a knife and knife-stock jointed to permit free torsional movement, a guiding-sur-.

face for the knife at the top-lift end of the heel, (the knife being also guided at the heelseat end of the heel,) a suitably-shaped camgroove or cam to determine the angle of presentation of the cutting-edge, and a mechanism to apply power tolthe apparatus, to cause the heel to be out all about by the knife, substantially as described.

7. The combination of a heel-cutting mech anism, acting substantially as specified, with a mechanism for relatively adjusting in the direction of the length of the shoe the tread and seat formers, by which the rake or pitch of the rear of the heel may be varied without substitution of other formers.

8. In a heel-trimming machine, a support adapted to hold the shoe in such position that the edge of the sole at the heel comes in contact with the knife-guard, in combination with a knifie adaptedto ,beguidedmby thehecl-seat portion of the sole, substantially as described. In witness whereof I have hereunto set my hand.

. ELISHA T. GREEN. Witnesses:

G. -W. GREGORY, W. J. PRATT.

Images