US580746A - Jack for sole-leveling machines - Google Patents

Description

(No Model.)

B. WINKLEY. JACK FOR SOLE LEVBLING MACHINES.

Nb. 580,746. Patented Apr. 13, 1897;

m: norms mews 00,. PnoYuumQ. wuumm'ou n c UNIT D STATES ERASTUS E. VVINKLEY, OF LYNN, MASSACHUSETTS.

JACK FOR SOLE-LEVELING MACHINES SPECIFICATION formingpart of Letters Patent No. 580,746, dated April 13, 1897.

Application filed September 7, 1895. Serial No. 561,808. (No model.)

To all whom it may concern.-

Be it known that I, ERASTUS E. WINKLEY, a citizen of the United States, residing at Lynn, in the county of Essex and Commonwealth of Massachusetts, have invented a new and useful Improvement in Jacks for Sole- Leveling Machines, of which the following, taken in connection with the accompanying drawings, is a specification.

The present invention relates generally to improvements in devices of the above class, and more particularly to such devices of the above class as are utilized in sole-leveling machines in which the operation of leveling is performed by a vibrating roll applied under pressure to the sole of a shoe.

In the class of sole-leveling machines above referred to the shoe is placed upon the machine upon its last, and it is of the greatest importance that such machines be provided with a jack which can be readily adjusted for shoes of any size or style and by means of which the shoe upon its last can be readily adjusted and firmly held in the required position. It is also of importance that the parts of the jack which are necessarily changed to adapt the jack to different sizes and styles of shoe should involve as little of the jack as practical and should be easily removed and adjusted and when adjusted should be held firmly in position.

The object of the present invention is to provide a jack which shall answer the requirements above stated; and to that end it consists of an improved form and arrangement of the parts of the jack, as hereinafter more specifically set forth and claimed.

The present invention is illustrated in the accompanying drawings, in which Figure 1 is a side view of a device embodying the same. Fig. 2 is a plan View. Fig. 3 is a detail view of the toe-supporting device, taken partially in section and partially in elevation. Fig. 4 is a partial section on lines a as, Fig. 2, showing parts in elevation. Fig. 5 is a detached view of the toe-cap.

Similar letters of reference refer to similar parts throughout the several views.

In the drawings, A represents a bed-plat or frame suitable to support the working parts of the jack. Upon the frame A is mounted a standard a, which may conveniently form a part of the frame A and which I have termed herein the toe-support. Upon the toe-support a is mounted the toe-rest b, which is provided with a stem 7), which is fitted to and free to reciprocate along a suitable longitudinal chamber a in the toe-support a. The toe-rest b is further provided with the lateral downwardly-extending projections or flanges b 12 upon opposite sides of the toe-supporta, which are provided with suitable bearings upon the toe-support a, along which they are movable vertically.

As shown in the drawings, the projections or-flanges b b are fitted to the sides of the toe-support a and bear against the same as the toe-rest is raised or lowered.

I would say that in the operation of machines of the class hereinbefore designated it is essential, to secure the best results, that the shoe be held as firmly as practical from lateral movement (independently of its jack) under the roll, and it has been an objection to machines as heretofore constructed that the toe-rest, as heretofore provided, when slightly worn and unless fitted with the greatest accuracy allowed the objectionable lateral play above noted. The function of the lateral downwardly projections or flanges b b is to prevent any lateral play of the toerest 1) upon its mountings, and, accomplishing such result, they constitute a valuable feature of the mechanism of the jack, and as I am the first to adopt such construction I do not consider the present invention as limited to the specific form shown.

I have provided suitable mechanism foraccomplishing the vertical adjustment of the toe-rest b, which in the form of my invention shown in the drawings consists of an inclined plane D, free to reciprocate througha lateral chamber (1 in the toe-support a, by means of which is it guided and held in position. The stem b of the toe-rest b rests upon the inclined surface of the inclined plane D, and suitable means are provided whereby the inclined plane D is reciprocated to raise and lower the stem b and the toe-rest b, mounted thereon. As shown in the drawings, the inclined plane D is actuated by means of a threaded bolt d, supported in a suitable bearing (Z conveniently in a bracket a on the toesupport a, and the threaded portion of which engages a corresponding threaded bearing in the inclined plane D. An operating-handle, conveniently the hand-wheel 0Z is provided, by means of which the bolt d may be rotated.

E represents the roll-receiver, which, as shown, is fixedly secured to the toe-support a, the form or arrangement of which, however, constitutes no essential feature of the present invention.

As jacks of this class of machines have been heretofore constructed the top of the toe-rest has been shaped to eonfornito the general contour of the toe of the last, what I have herein termed a toe-cap being formed thereon. With the above-suggested arrangement in order to adapt the jack to shoes having marked differences in the shape or size of the toeit is necessary to provide a series of interchangeable toe-rests provided with suitably-shaped caps, which must be carefully finished in working parts to secure their successful operation, thereby adding a considerable item to the expense of the machine. By the present inventionl have provided the toe-rest b with a removable toe-cap B.

As'shown, the toe-cap B. consists of a suitable block or plate the upper surface of which is shaped to conform generally tothe contour of the top of the toe of the last (being in practice filled, out by a suitable cushion or padding) and the under surface of which conforms to, the top of the toe-rest b.

The toe-cap B may be conveniently held inposition by means of the pin 6 which engages a. suitable socket (not shown) in the toe-rest b, and by the lateral downwardlyextending projections or flanges 19 which project over the sides of the toe-rest b.

It will be noted that the cap Bis not vertically movable except with the toe-rest, and a comparatively wide bearing therefor is provided upon the toe-rest,an arrangement which insures the successful operation of the toecap-B without any special accuracy in the fitting of parts.

A series of toe-caps B are provided which are interchangeably adjustable upon the toe-- rest Z) and by means of which the jack is adapted for shoes of different styles and sizes. It will be noted that the removable toe-cap B involves no working parts of the jack and practically only such parts as are immediately adjacent to the toe of the lastv and the form of which must be necessarily varied. By the above arrangement the cost of the interchangeable parts of the jack is reduced to a minimum, while the rapidity with which they can be removed or adjusted greatlyincreases' the amount of work that can be accomplished, particularly in the case of an automatic twin machine.

H represents the hee1-support,which is movable toward, and from the toe-support along the. bed or frame A. Upon the bed-plate or frame A is formed a raised guideway a preferably dovetailed and which engages a correspondingly-shaped groove h in the foot of the heel-support H. Upon one side of the guideway 604 is a set-screw h, projected through one of the walls of the slot 72, in which a threaded bearing is provided. By means of the setscrew h the heel-support H may be clamped in any desired position along the guideway In practice I provide a wearing-strip a, interposed between the set-screw h and the guide a, which prevents any lateral play of the heel-support II when clamped in any desired position. The set-screw h is provided with an operating-handle, conveniently the hand-wheel 72 Pivotally mounted upon the heel-support H is a, last-block L, which is provided with the usual spindle Z. The last-block L projects upon each sidebeyond its bearings, and the projected portions thereof rest upon the rods Z Z The rod Z is fitted to a socket Z in the heel-support H, in which it is free to reciprocate vertically, being guided and held in position thereby. In the socket Z is placed a spring Z upon which the rod Z rests and which acts to raise the rod Z when depressed into the socket Z as hereinafter described. The other rod Z is extended through a sleeve Z and its lower end rests upon the cam Z pivoted at Z on the heel-support H. To the cam Z is secured an operating-handle Z by means of which it may berotated and which carries a spring-pressed pawl Z which engages a toothed segment Z fixedly secured to the heel-support H. The pawl Z and toothed segment Z act to lock the cam Z in any desired position.

The arrangement above described is such that a rotation of the cam Z in one direction raises the rod Z throwing the last-block and spindle forward and depressing the rod Z into the socket Z against the resistance of the spring Z When the cam Z is rotated in a reverse direction, the spring Z acts to raise the rod Z and bring the last-block and spindle back to their original position.

To move the heel-support H along the guideway a toward and away from the toe-support a, I have provided the following mechanism: Upon the bed-plate A, parallel with andadjacent to the guideway a, is formed or secured the rack M, in which works a pinion 72/ mounted, upon a shaft or trunnion h supported in suitable bearings inthe heel-support H. The trunnion 77, is projected through its bearing and carries beyond the same an operating-handle, conveniently a hand-wheel h, by means of which it can be rotated. The above-described arrangement is such that a rotation of the pinion 7L causes the heel-support H to travel along the guideway a toward or away from the jack. It will be noted that the arrangement of the rack a and pinion h, as above described, constitutes a very rapid and easily-operated device for adjusting the jack, and that since the hand-wheel M, which controls the pinion 72, and the hand- Wheel 7Z2, which controls the clamping mechanism, are placed substantially in line upon opposite sides of the jack the operator when he has brought the heel-support H into the desired position with one hand can readily clamp the same with the other, the arrangement being such that he controls the position of the heel-support during the clamping operation by means of the pinion h, and thus prevents any liability of the jack slipping out of adjustment while being clamped, a feature of the greatest importance in machines of the class hereinbefore designated.

The operation of my invention has been sufficiently described in the foregoing specification to enable any one of average skill in the art to operate the same. It may, however, be desirable to state in this connection that the return movement given to the last-block L and its spindle by the spring Z when the lever Z is operated to unjack the shoe prevents to a great extent the liability of the spindle Z to become wedged in the spindlehole in the last and greatly facilitates, the removal of the last from the jack, and, further, that it retains the spindle Zin a convenient position to be adjusted in the spindlehole of a last to be placed upon the jack and avoids any necessity of taking hold of the spindle to insert it in the spindle-hole.

Having thus described my invention, I desire to'say that I do not consider the same as limited to the specific construction hereinbefore described; but

I claim as novel and desire to secure by Letters Patent of the United States 1. In a jack for sole-leveling machines the combination with associated parts of the jack, of a last-block provided with a suitable spindle and capable of a longitudinally-rocking movement, reciprocating rods arranged to bear against the last-block upon opposite sides of the center of motion, and means for moving said rods in opposite directions, substantially as described.

2, In a jack for sole-leveling machines the combination with associated parts of the jack of a vertically-adjustable toe-rest, a removable toe-cap mounted thereon and means for holding the toe-cap in a fixed position'when adjusted upon the toe-rest, substantially as described.

3. In a jack for sole-leveling machines the combination with associated parts of the jack of a vertically-adjustable toe-rest, a fixed toesupport upon which the toe-rest is mounted, downwardly-extending projections upon opposite sides of the toe-rest and bearings for said projections on the toe-support along which they are free to reciprocate and an adjusting-stem movable in said toe-support, substantially as described.

4. In a jack for sole-leveling machines the combination with associated parts of the jack of a vertically-adjustable toe-rest, a toe-support upon which the toe-rest is mounted, a downwardly-extending stem on the toe-rest by means of which it is vertically supported,

downwardly-extending projections upon opposite sides of the toe-rest arranged to hold the same from lateral movement and bearings for the stem and projections upon the toe-support along which they are movable, substantially as described.

5. In a jack for sole-leveling machines the combination with associated parts of the jack of a rocking last-block carrying a suitable spindle, a heel-support upon which the lastblock is mounted, a reciprocating rod provided with suitable bearings in the heel-support for actuating the last-block, a cam pivotally mounted upon the heel-support for actuating the rod, a toothed segment carried by the heel-support, and a spring-pressed pawl carried by the cam and arranged to engage the teeth upon the segment, substantially as described.

6. In a jack for sole-leveling machines the combination with associated parts of the jack of a suitable bed-plate, a fixed toe-support mounted thereon, a heel-support mounted thereon and movable along the same toward and from the toe-support, a rack and pinion arranged to actuate and control the movement of the heel-support, clamping means for clamping the heel-support in any desired position along the bed-plate, an operating-lever for the pinion located at the side of the jack, an operating-lever for the clamping means located upon the opposite side of the jack, both levers being in a convenient position to be simultaneously controlled by the operator, substantially as described.

7. In a jack for sole'leveling machines the combination with associated parts of the jack of a longitudinally and laterally chambered toe-support, a toe-rest, guides on the toe-rest arranged to bear upon the opposite sides of the toe-support, an inclined plane fitted to and free to reciprocate in the lateral chamber, a supporting-stem upon the toe-rest, fitted to the longitudinal chamber and free to reciprocate along the same, arranged to rest upon the inclined surface of the inclined plane, and mechanism for actuating the inclined plane comprising a threaded bolt sup ported in suitable bearings upon the toe-sup port, substantially as described.

8. In a jack for sole-leveling machines the combination with associated parts of the jack of a heel -support, a lastblock pivotally mounted upon the heel-support and provided with a suitable spindle, a reciprocating rod arranged to bear against the last-block, an oscillating cam for actuating the rod, and a locking device whereby the cam is locked in the desired position, substantially as described.

9. In a jack for sole-leveling machines, the combination with a toe-support and heel-support of a last-block pivoted to the heel-supattesting Witnesses, this 23d day of August, port ang free3 tgltip longitjndinaflly thetl'eo'i, a 1895. I earn an sui a e connec 10115 or ac ua mg 1 I T the last-block, and a spring-controlled lock- ERAS BUS WINKLES' 5 111g device for locking the cam in the required Witnesses:

position, substantially as described. FRED V. HART, WVitness my hand, in the 'presence of two A. E. WHYTE.

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