US1029000A - Shoe-jack. - Google Patents

Description

A. EPPLER.

SHOE JACK.

APPLICATION FILED NOV; 3, 1910.

Patented June 11, 1912.

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im aafie A. EPPLBR.

SHOE JAGK.

APIILIGATION FILED NOV.'-3, 1910.

m I m/ ww COLUMBIA PLANDGRAPH 60.. WASHINGTON. n. c,

STATES, PATENT OFFIC.

, ANDREW EPIELER, 0F LYNN, MASSACHUSETTS, ASSIGNOR TO UNITED SI-IOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

SHOE-JACK.

Application filed November 3, 1910. Serial No. 590,449.

To all whom it may concern:

Be it known that I,-ANDREW EPPLER, a citizen of the United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Shoe-Jacks; 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.

This invent-ion relates to jacks and their attachments and more particularly to such devices for use in sole leveling machines when leveling spring heel shoes, although certain features of the invention are of general applicability and may be embodied in any type of saddle and spindle ack.

In leveling mens and womens shoes when a heel is to be attached later it is necessary to level only the forepart and shank of the sole, but in leveling misses and childrens spring heel shoes it is desirable to level the heel portion of the sole as well as' its forepart and shank. In that type of leveling machine, which employs a roll, or form, for performing the leveling operation, it has been customary when operating on spring heel shoes to provide the jack with a rest to receive and support the leveling tool as it rides off of the heel end of the shoe. Such a rest, when used, is arranged with its surface substantially in the plane of the heel seat so that the leveling tool, which bears with considerable pressure on the sole, will not injure the heel end of the shoe as it passes on and 01? the rest. It also is desirable, as is well known to those skilled in the art, that the rest, when in operative position, be close to the shoe so as not to leave an open space over which the roll must pass. When so arranged, however, the rest interferes with the jacking and unjacking of the shoe.

One object of the present invention is to provide an end rest for the leveling tool always in proper operative position when the shoe is jacked but arranged to be removed from operative position and held out of the way of the operative when the shoe is unjacked.

In accordance with this object a feature of'the invention comprises a heel rest for a leveling tool connected to be operated by the means for jacking and unjacking the Specification of Letters Patent.

Patented June 11, 1912.

shoe, the arrangement being such that when the shoe is jacked the rest is concurrently moved to operative position and vice versa, such that an unjacking of the shoe will operate to move the rest away from the shoe. Preferably, cam means are utilized to a saddle and spindle jack, to jack the shoe,

and to further details of construction insuring simplicity and ease of operation as will be readily appreciated by those skilled in the art from the following description and appended claims.

The preferred form of the invention is' illustrated in the accompanying drawings,

in which Figure 1 is a side elevation of the complete jack and its attachments; and Fig. 2,

is a plan, in section, of the parts below the line 22 of Fig. 1.

In the preferred embodiment of the invention, and referring to the complete jack shown in Fig. l, 5 indicates the jack support which is provided with trunnions 6 at each end by which it is mounted within a jack carrying frame such as the frame J of the leveling machine illustrated in the patent to Rigby, No. 925,509 of June 22, 1909. The jack is generally similar to the jack shown in the Rigby patent having a toe post 7 provided with a convenient form of saddle 8 and a heel-post 9 provided with the usual last spindle 10. The particular construction of the last supporting devices of the jack is immaterial as they may be of any suitable form, the present invention residing in the features and devices to be herein after described in detail.

is journaled a transverse rock-shaft 12 provided at one end with an operating handle 13 which has connected to its hub a disk 1& having a leveling tool-rest actuating path cam 15 formed upon its inner side. upon which a shoe is to be assembled is indicated at 16 in Fig. 1. At the heel end of the last is a rest 17 adapted to receive the leveling tool, such as the roll of the Rigby A last at its lower end upon pins 19 (Fig. 2) carried by the upper end of a rigid support 20 projecting rearwardly and upwardly from the base 21 which supports the heel-post 9. The leveling tool rest-support 18 is provided with a lug 22 (Fig. 1) at its lower end which forms, in effect, a crank by which the rest may be moved about its fulcrum 19 toward and from the shoe. The lug 22 is connected by a link 23 to one end of a crank arm 24, the other end of which is pivoted upon a horizontal pin 25 (Fig. 2) carried by the support 20. The 'pin 25 has also fulcrumed thereon a vertically arranged crank arm 26 which, at its freeend, is provided with a cam roll 27 adapted to be engaged by the path cam 15.

It is desirable that the heel-rest, when in operative position, be in engagement with the heel end of the shoe so that there will be no intervening space for the leveling tool to sag into as it rides to and from the shoe and rest. Simplicity of construction demands, also, that the rest be movedpositively into and out of position. It 1s obvious, however, that with different sizes of shoes, the extreme rear portion of the shoe will project for varying distances beyond the last spindle 10. To accommodate varying sizes the actuating cam 15 must be so designed as to impart to the tool-rest a large enough throw to permit the rest to be properly positioned upon the smallest size of shoe to be operated upon. When so designed the throw of the cam is too great for properly positioning the rest for larger sizes of shoes and, therefore, means should be provided to take up any excessive throw of the cam after the heel-rest has been seated against a shoe larger than the shoe for which the cam has been particularly designed. To this end, instead of connecting the arms 24 and 26 to form a rigid bellcrank, these arms are connected by means of a pin 28 passed upward through the arm 24 and through a lug 29 projecting rearwardly from the arm 26 above the arm 24. The pin 28 is provided with a head 30 at its lower end to limit its upward movement through the arm 24 and is surrounded by a coiled spring 31 between the arm 24; and the lug 29. An adjustable nut 32 is threaded on its upper end. This construction provides for a yielding link in the train of mechanism, between the cam 15 and the heel-rest 17, by which the heel-rest is moved into and out of operative position.

In operating the device, when the handle 13 is moved downward to the position shown in. Fig. 1, the heel-rest will be brought forward, by pressure of the lug 29 on the spring.

31, until it is seated against the shoe and thereafter any further movement given to the arm 26 bythe cam will be taken up by a compression of the spring 31. In retracting the heel-rest to its inoperative position, at the time when the shoe is to be unj acked after the leveling operation, an upward movement of the handle 13 will cause the lug 29 to engage the nut 32 and, by force applied to the pin 28, rock the support 18 outwardly. The heel-rest is only desired to be in operative position during the time that the sole is being leveled or during the time that the shoe is in jacked position and, as is obvious, should be removed to its out-ward position to permit ready unjacking the shoe. It is, therefore, convenient to utilize the heel-rest actuating handle 13 for jacking and unjacking the shoe.

In the jack of the present invention, while the shoe is jacked and unjacked by tilting the spindle 10 as is usual, novel means has been provided for imparting a tilt to the spindle. The spindle 10 is mounted upon a rocking block 33 (Fig. 1) having a depend-19 ing link 34, such as is shown in the patent to Meyer No. 677,550 of July 2, 1901, but the lower end of the link 3% is forked, as shown best in Fig. 2, and its ends are loosely journaled upon the transverse rock-shaft 12. Inside of the forked end of the link 34 and at opposite sides of the heel-post 9, the rock shaft 12 has secured thereto preferably two cam members 35 adapted, when the shaft is turned by the handle 13, to bear upon lugs 36 projecting from a collar 37 arranged to slide upon the lower end of the heel-post. This portion of the heel-post is preferably squared (see Fig. 2) to prevent rotation of the collar 37 and a consequent removal of the lugs 36 from above the cams 35. Between the upper side of the collar 37 and a second collar 38, adjustably fixed to the heel-post, the

post is surrounded by a coiled spring 39.

The handle 13 and cams 35. form a cam lever which cooperates with the spring 39 to hold the toe of the shoe yieldingly on its saddle.

Assuming that the shoe is jacked, as shown in Fig. 1, to unjack it the handle 13 is moved upward to a substantially vertical position which, by movement of the rock-shaft 12, turns the cams 35 downward and permits the spring 39 to expand and weaken, or wholly relieve, its tension. While the spring 39' i is in this condition, the spindle 10 can readily be turned backward to permit the toe of the shoe to be raised from the saddle 8 in the usual manner and the shoe taken from the jack. It is, of course, understood that the upward movement of the handle 13 has, through the cam 15, removed the heel-rest to its dotted line position in Fig. 1. After a new shoe has been placed in position upon the spindle and saddle, it is jacked by throw-' ing the handle 13 downward, which, by reason of the rocking of the shaft 12, turns the cams 35 upward into the position in which they are shown in Fig. 1, thereby first seat-- ing the toe of the shoe firmly on the saddle and thereafter lifting the collar 37 and placing the spring 39 under considerable tension. The effect of this is to impart a yielding tilting pressure to the spindle by drawing down on the link34. To ermit a vertical movement of the link 34: the journal of the rock-shaft 12 in the lower end of the heel-post 9 is elongated, as shown in dotted lines at 40 (Fig.1). The advantage of this construction, over that of the Meyer patent, is that the tension of the spring 39 can be so adjusted that sufficient pressure to break the last can never be applied. As the spindle 10 is tilted forward to jack the shoe, the heel-rest is also tilted forward about its fulcrum and brought into operative position. While the vertical movement of the rockshaft 12 causes a slight kick of the heel-rest support, during the jacking and unjacking operations, this is immaterial.

It will be clear to those skilled in this class of machines and with the general objects of'the present invention in view, that changes may be made in the details of structure, the described and illustrated embodiment thereof being intended as an exploitation of its underlying essentials, the features whereof are definitely stated in their true scope in the claims herewith.

What is claimed as new, is

1. A jack for leveling machines, having, in combination, means for jacking and unjacking the shoe, and a connected end rest for a leveling tool movable into and out of operative position as said means are operated.

to jack and unjack the shoe respectively, substantially as described.

2. A jack for leveling machines, having, in combination, a saddle, a heel-post having a spindle pivoted thereon, a pivotally mounted'end rest for a leveling tool, and means for concurrently tilting the spindle and rest in the same direction, substantially as described.

3. A jack for leveling machines, having,

in combination, shoe jacking and unjacking means, an end rest for a leveling tool movable into and out of operative position, and a single controller for concurrently operating said means and rest, substantially as described.

5. A jack for leveling machines, having, in combination, an end rest for a leveling tool movable toward and from the shoe, a cam, and operative connections between the cam and rest for positively moving the rest, said connections being provided with a yielding link to take up an excessive throw of the cam, substantially as described.

6. A jack, having, in combination, a saddle, a heel-post having a spindle pivoted thereon, a suitably confined coiled spring surrounding the post, and means for tilting the spindle and concurrently placing the spring under tension to hold the pin in its tilted position, substantially as described.

7. A jack, having, in combination, a saddle, a heel-post having a rocking block, a spindle on said block, a link depending from the block, a suitably confined coiled spring surrounding the post, and a cam lever intermediate the link and lever and adapted when moved in one direction to draw downward on the link to tilt the spindle and then place the spring under tension, substantially as described.

8. A jack, having, in combination, a saddle, a heel-post having a rocking block, a spindle on said block, a link depending from the block, a coiled spring on the post confined between an upper fixed collar and a lower sliding collar, and a cam lever connected to the link and adapted to bear on the sliding collar, substantially as described.

ANDREW EPPLER.

Witnesses:

CHESTER E. Rooms, LAURA M. GOODRIDGE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). C.

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