US1202833A - Shoe-jack. - Google Patents

Description

J. F. GREEN.

SHOE JACK.

APPLICATION FILED OCT-23,1915.

LQUQ W, Patented 001:. 31,1916.

f raoaeas.

Specification of Letters Patent.

JOHN F. GREEN, OF ROCKFORD, ILLINOIS.

SHOE-JACK.

Patented Get. 311, 19116.

App1ication filed October 23, 1915. Serial No. 57,438.

To all whom it may concern:

Be it known that I, J oi-rN F. GREEN, a citizen of the United States, residing at Rockford, in the county of Winnebago and State of Illinois, have invented certain new and useful Improvements 1n Shoe Jacks, of

which the following is a specification.

This invention relates to shoe jacks or last In the course of making and repairing a shoe the different operations necessitate changing and adjusting the shoe to various positlons and it is desirous to effect these adjustments quickly and easily without re moving the shoe from the last.

The primary object of my invention is to provide a shoe jack of improved construction, in which the desired adjustments of the last may be very easily and readily made with little effort on the part of the operator, thus saving time and labor and permitting more efficient work to be obtained.

Another object of my invention is to provide a shoe jack comprising but few parts so designed that the shoe last will be rigidly held and braced to serve as a rigid support for a shoe when nailing the same.

Other and more specific objects of my invention are to provide a last support so constructed that it serves as a work table upon which various operations incidental to shoe making and repairing may be performed, to provide a last strap of improved construction whereby to facilitate fastening a shoe to the last; to provide a last integral with its supporting member which is removably and adjustably mounted so that it may be adjusted rotatably on its longitudinal axis; and to provide an adjustable support for the last support whereby the latter may be swung laterally on a transverse axis disposed intermediate its ends.

My invention, its mode and principle of operation will become better understood by reference to the following description when considered in connection with the accompanying drawings, wherein- Figure 1 is a side elevation of a shoe jack embodying the principles of my invention; Figs. 2 and 3 are plan and end views, respectively, of the shoe jack; Fig. A is a vertical section through the jack taken on the line 4-4 of Fig. 1, and showing the cranked support and shoe last swung to a position desired when sewing the sole; Fig. 5 is a plan sectional view taken on the line 55 of Fig. 8; and Fig. 6 is a vertical sectional view taken on the line 6 6 of Fig. 1.

7 Referring to the drawings, it will be noted that my improved shoe jack may be mounted upon any suitable rigid base or standard, such, for instance, as a work bench or, as illustrated in the present instance, upon a block 7 supported by uprights 8. This latter form of support is preferable in many instances because of the small amount of floor space required and because the operator may stand either at the front or side of the jack, when desired. With this form of base I have also provided a tool tray 9 projecting laterally from one side of the base so that the-operator may keep all the tools necessary for work on shoes within his immediate reach.

Secured to the top of the block 7 in spaced relation are front and rear standards or hearing brackets 11 and 12, respectively. The upper ends of these standardsform bearings for a cranked supporting member to be described later and are shaped to provide comparatively flat working faces or tables 13 and 14, the purpose of which will appear hereinafter. A double crank member designated in general by reference character 15, interposed between the standards 11 and 12 and provided with pivot pins 16 journaled in the bearings of the standard, is designed for carrying a last support inclicated generally by 18. The last support is rotatably mounted on the free end 17 of the cranked member intermediate its arms to turn on an axis intersecting at right angles that of the cranked member. Referring to Fig. A, it will be noted that the last support, having a last 19 formed integral with its upper end, is seated at its lower end on the end 17 of the crank member and provided with a pivot bolt 21 passing through and journaled in the said end 17 whereby the last support is mounted to be rotatably adjusted on its longitudinal axis on the cranked member. A collar 22 secured to the lower end of the pivot pin 21 by a screw 23 holds the last support seated on the cranked member and against displacement therefrom. A felt gasket 24: is interposed between the collar 22 and the end 17 of the cranked member so as to give a slight resiliency to the connection between the last support and crank L member.

It will be noted that the last support 18 is comparatively short and that by'mounting it on the cranked member in the manner described, a. very compact arrangement of parts is obtained with the view of enhancing rigidity of the shoe jack and of permitting various adjustments thereof to be quickly and easily effected.

It will be further noted that by reason of the peculiar mounting of the jack support it may be swung laterally on a transverse axis disposed intermediate its ends so that the shoe last travels through a comparatively small arc'and consequently is disposed in its adjusted positions in proper relation to the standard, and that the shoe last may be rotatably adjusted upon the cranked member to angle the shoe last with respect thereto.

. to engage in notches Means are provided for locking the cranked member in various positions, wherein the last support will be maintained in upright position for nailing and perfornr ing other work on the sole and heel of the shoe, in an inclined position with the shoe last disposed at the left of the machine, as shown in Fig. 4 for sewing the sole and in a horizontal position with the shoe last disposed at the right for trimming and beveling the sole. The cranked member is held in any of these positions by means of a spring pressed latch 25 pivotally mounted at 26 on the front standard 11 and adapted 27, 28 and 29 formed in the inner end of the front arm of the cranked member. 7

As shown in Figs. 1 and 6, the latch 25 is engaged in the notch 28 so as to maintain the last support in upright position. By raising the outer end of the latch pin the crank member and last support may be swung to the position shown in Fig. 4, which is maintained by the latch pin engaging in the notch 27. Obviously, the latch support and cranked member may be swung in the opposite direction until horizontally disposed and the latch engages in the notch 29. The last support is normally held fixed against rotation with respect to the cranked member by means of a pair of latches or pawls 31 and 32 pivotally mounted on a lug 33 on the end 17 of the cranked member. These pawls are adapted to engage in notches 34L circumferentially spaced about the lower end of the last support so as to hold the same against rotating in either direction. As shown in Fig. 5, a spring 35 constantly urges the pawl 31 into operative holding position and both pawls are movable to inoperative position by pressing the outer ends thereof toward the last support.

It should be understood that any suitable form of latch or holding means may be employed for holding the last support and cranked member in set positions and for permitting various adjustments to be effected.

I have provided improved means for holding a shoe on the last, consisting of a strap 36 secured at 37 to one side of the last support extended over the last and connected at its opposite end to a clamping device for drawing the strap down tight onto a shoe on the last. As shown in Figs. 1 and 1, this clamping device comprises a lever 38 pivoted at 39 to the last support, connected intermediate its ends by a spring connection 41 with the last strap, and shaped to engage adjacent to its free end a pin 42 fixed to the last support. The free end of the lever 38 is turned outwardly to serve as a handle by which the lever may be swung on its pivot downwardly to clamp a shoe to the last and upwardly to release the shoe, it be ing apparent that the spring affords a yielding connection to accommodate shoes of various sizes and that the lever will be automatically held in clamping position by reason of the point of attachment of the spring to the lever 38 being slightly out of vertical alinement with the pivot pin 39.

lVhen repairing shoes one last may be used to hold a number of different sized shoes approximating the size of the last and when a shoe too large or too small to be efficiently worked on the last is to be repaired, the last support will be removed and a new one of suitable size mounted on the cranked member. The last support may be easily removed by detaching the collar 22 and lifting the last support from position on the cranked member. Each last support is provided with a last strap so as to be complete and ready for use as soon as attached to the cranked member.

Attention is called to the novel means for supporting the last and to the advantages ensuing therefrom. The crank structure permits of few parts very compactly arranged and allows a. large number of adjustments to be obtained. Very little effort is required by the operator in making these adjustments, and it will be noted that when the cranked member is in either of its horizontally disposed positions all that is necessary to return it to upright position is to release the latch 25, whereupon the crank will antomatically swing to lowermost position due to its weight being greater than that of the last.

hen repairing shoes, an operator often desires to do work on the shoe which can not be done while the same is on the last and which, when shoe repairing jacks now in common use are employed, must be done at a work bench separate from the repair jack or upon some suitable machine or device.

To permit these various operations to be performed at one machine, I have constructed the standards 11 and 12 so that the top ends thereof serve as a work table upon which to perform various operations. In

Fig. 3 l have indicated in dotted lines a shoe positioned on the table 13 with the heel resting on said table as is done when it is desired to remove the heel by means of a chisel. This operation is frequently performed and especially when removing a new heel when it is desired to attach a rubber heel to the shoe; and after a new heel has been removed it is desirable to extract the ails therefrom by positioning the heel on the table and driving the nails through the recess i3 at one side of the table so that the heel may be used on another shoe. A wooden block 4a is attached to one end of the rear table 14 projecting above the face thereof so as to form an abutment for a piece of leather positioned on the table during the operation of beveling an edge of the leather, the knife being removed by the operator in the beyeling operation away from him toward the block it, which being wood does not blunt the knife.

it is believed that the foregoing conveys a clear understanding of my invention and its principles of operation, and it should be understood that various changes in details of construction may be resorted to without departing from the spirit and scope of the in vention as expressed in the appended claims:

1 claim:

1. it. hoe jack comprising a standard, a double crank member pivotally mounted on the standard to swing on a horizontal axis, a

Copies of this patent may be obtained for five cents each, by addressing the ing shaped to provide work last support interposed between the arms of the crank member, pivotally mounted on the outer end of said member on an axis trans verse to the pivot axis thereof, and extending diametrically of said crank member pivot beyond the same to support a last a substantial distance therefrom, the arms of said crank member and the bearings thereof being arranged relatively close to the last support so as to afford a substantial mounting therefor on opposite sides of its pivot, means for interlocking the last support and crank member at any of a plurality of adjusted positions of the former on the latter, and means for interlocking the crank member and the standard at any of a plurality of adjusted positions of said member with respect to the standard.

2. A shoe jack comprising a pair of spaced upright standards, and a double cranked last support interposed between and pivotally mounted on the standards and carrying a shoe last disposed a substantial distance above the top of the standards diametrically opposite from the cranked end of said memher, the upper ends of said standards in which the cranked member is journaled betables or sur faces upon which various operations incidental to, making and repairing shoes may be performed.

JOHN F. GREEN.

Commissioner of Patents.

Washington, 13. C.

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