US350137A - Shoe-maker s jack - Google Patents

Description

(No Model.) 3 Sheets-Sheet 1. A. JEFFERYS.

SHOE MAKERS JAGK. No. 350,137. Patented Oct. 5, 1886.

N. PETERS. PM J-Lithognpher, Wuhingwn, I). c.

(No Model.) Sheets-Sheet 2. A. JEFFERYS.

SHOE MAKBRS JACK.

No. 350,137. Patented Oct. 5, 1886.

(No Model.) 3 SheetsSheet 3.

A. JEPFERYS.

SHDE MAKER'S JACK. No. 350,137. Patented Oct. 5, 1886.

i5 fi 115 l Jr I? g G P E f OR M N4 PETERS PhaivLilhuznpher. Wuhington. D. C.

Ntrae ALBERT JEFFERYS, OF PHILADELPHIA, PENNSYLVANIA.

SHOE-MAKERS JACK.

QBPEQ KFICATION forming part of Letters Patent No. 350,137, dated October 5, 1886. Application filed February 12, 1886. Serial No. 191,731. (No model.)

To all whom it may concern.-

Be it known that I, ALBERT JEFFERYS, a subject of the Queen of Great Britain, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Shoe-Makers Jacks, of which the following is a specification, reference being had therein to the accompanying drawings.

The object of my invention is to provide a shoe-makers jack which will be simple and iiieXpensive in construction, and which may be adjusted in any desired position, so that the operator may conveniently perform the operations of lasting, stitching, pegging, heeling, trimming, burnishing, finishing, &c.

In the drawings, Figure 1 is a side elevation of my jack, the dotted lines showing its position when partly raised; Fig. 2, a plan of the same; Fig. 3, a plan of the base of the jack; Fig. 4, asectional elevation of thejack online :0 m, Fig. 2; Fig. .3, a side elevation of the jack in position for stitching; and Fig. 6, a plan of part of last-plate, showing lever for looking or unlocking plate and bolt for securing lever.

A, Figs. 1, 3, 4, and 5, is a circular base having in it a radial slot, (1, Fig. 3. This base is firmly secured by screws or bolts to a perma nent table or stand.

B is a plate or disk which is placed upon the top of base A, and which carries the heel and toe seats 0 D for the last, as hereinafter described.

G is a journal-bearing furnished with an arm, G, which passes through and is pivoted in the radial slot a in base A at I).

e is a journal-bearing on the plate or disk B, which is furnished with a vertical slot, 0, Fig. 4, through which a pin, N, on heel-seat may pass.

H is the journal, which is furnished with a spiral groove, I J, a square bar passing through a corresponding hole in journal H. K K are crown or bevel wheels carried upon the ends of bar J.

L L are corresponding wheels carried upon the jomnal-bearings e G.

0, Figs. 2, 4, and 6, is an opening in theplate or disk B, which has grooves E on its sides for holding the toe-seat D, and d is an opening for holding the heel-seat O.

S, Fig. 3, is a clamp for clamping the plate B in any desired position. This clamp is pivoted in the base A at it, and is operated by a screw, S, which passes through the side of base A.

The heel-seat O is constructed as shown in Fig. 4. Its front end carries a pin, N, which passes into the groove I injournal H. Its rear end is rounded off, so as to touch the plate B in only one place, and its top carries a pin, F, which passes into a corresponding hole in the heel of the last.

The operation of thejack is as follows: The plate or disk B, which carries the toe and heel seats D and O, is pivoted at its center upon the journal H, and this disk maybe swung around H as a center to any desired position. As shown in the drawings, the wheels K and L are meshed one into the other, and the plate B and journal H are consequently looked together, and if the plate B is turned thejournal H turns with it. If the rod J is raised, throwing wheels K and L out of gear and wheels K L into gear, the journal H will be locked to the journal-bearing G, and the plate B will turn, while the journalHwill remain immovable. \Vhen the last is placed upon the seats D and O, the pin F upon the latter passing into a hole in the heel of the last, and the pin N passing through a slot, 0, in the journalbearing 6 and into the spiral grooveI in journal H, the bar J is raised, throwing wheels K and L out of gear and wheels K L into gear. The plate B is now turned around its center, and the pin N travels down in slot I, drawing down the front end of heel-seat O, and throws the upper end toward the toe-seat D, firmly pressing the last against this seat and looking it so that it cannot be removed. The bar J may now be thrown down, throwing wheels K and L into gear and wheels K L out of gear, and the plateB and the last may be swung into any desired position without unlocking the last. If the bar J is so placed that both pairs of wheels K L K L are in gear at the same time, the whole jack is locked and cannot be turned in any direction. As before mentioned, the heel-seat O has its rear end rounded off and touches the plate B in one point only. This allows the heel-seat to be tilted by the pin N being drawn up or down by groove I in jouragainst the wall '5.

nal E. It should also be mentioned that, in order to prevent jamming, the bottom of the heel-seat is not a straight line, but a curve, as shown in Fig. 4, and hence the heel-seat has but two lines of bearing, one on its rear end and one on its bottom. In order to raise andlower the bar J conveniently, Ihave alever, M, pivoted to the plate B at f. This lever is turned up, as shown, and its upper end, Q, is bifurcated, Fig. 5, and passes beneath a collar, P, which is on the upper'part of wheel K. The outer end of the lever M is furnished with three holes, g g g. v

B, Figs. 4 and 6, is a bolt which passes through the side walls, z'j, of the opening 0 in plate B, and which is furnished with a head, h.

T is ahelicalspring surrounding bolt B, one end bearing against the head h and the other The outside end of the head his conical, as shown in Fig. 6, and is adapted to enter the holes g y 9 in the end of lever M.

When the wheels K L are meshing, the head I h of bolt R is in the hole g. If the wheels K L are meshing, the head h is placedin hole and if both pairs of wheels are gearing the head is placed in hole 9.

When itis desired to tilt the last, the-plate B is tilted, as shown in Fig. l by the dotted lines, turning upon the screw b as a center. \Vhen the plate has been tilted sufficiently,the screw S is screwed in and the clamp S is pressed firmly against the arm G of journal-bearing G, and holds this arm and the plate B, &e., firmly in place. If desired, the screw 1) may be removed and the plate B, 810., placed as shown in Fig, 5. This wouldbea very convenient position for performing the operation of stitching.

The jack may be. adapted to lasts of different lengths by simply moving the toe-seat D from one groove E to another.

Having thus described my invention, I claim and desire to secure by Letters Patent 1. The combinatiomin a shoe-makersjaok, of the base A, plate B, with journal-bearing e and holes 0 and d, for receiving last-seats Oand D, last-seats Oand D, journal-bearing G, with arm G, screw 1), journal H, with slot I, pin N on last-seat 0, bar J, with wheels K K, and wheels L L, all. arranged and operating sub- ;stantially as and for the purposes set forth.

2. The combination,in a shoe-makers jack, of the base A, with radial slot a, plate B, with journal-bearing e and holes a and d, for receiving last seats O'and D last-seats O andD, the former with pins F and N, journal-bearing G, with arm- G, screw b, journal H, with slot I,

bar J ,with wheels-K K, wheels L L, screw S,

and'elamp S, all substantially as and for the purposes set forth.

3; The herein-described device for raising and lowering the bar I, and for throwing the wheels K L K L in or out of gear, consisting of the lever M, pivoted at f, having its topQ bifurcated and itsontside endfurnished with three holes, 9 g 9 and bolt R, with conical pointed head It and helical spring T, all substantially as set forth.

4-. The herein-described device for retaining the plate B and journal-bearing arm G at any angle, consisting of the clamp S, pivoted to base A at k, and operated by a screw, S, substantially as set forth.

Intestimony whereof I a-ffi-x my signature in presence of two witnesses.

-ALBERT J'EFFERYS. Witnesses:

EDWARD F. PUGH, O. O. STODDARD.

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