US1004470A - Shoemaker's jack. - Google Patents

Description

P. 0. ROLLINS.

SHOEMAKEBS JACK.

APPLIOATIOH FILED APR. 7. 1909.

Patented Sept.26,1911.

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UNITED STATES P TEN T OFFICE.

FRANK OSCAR ROLLINS, OF NEWBURYPORT, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO WILLIAM FRANKLIN RUNNELLS AND NORMAN RUSSELL, BOTH OF NEWBURY- SHOEMAKERS JACK.

Specification of Letters Patent.

Application filed April 7, 1909.

Patented Sept. 26, 1911..

Serial No. 488,337.

To all whom it may concern:

Be it known that I, FRANK Oscar: ROL- lLi'Ns, a citizen of the United States, and a resident of Newburyport, in the county of Essex and State of lvlassachusetts, have invented a new and Improved Shoemakers Jack, of which the followingis a full, clear,

. and exact description.

i the leg and last of the jack.

The invention consists in the construction and combination of parts to be more fully described hereinafter and particularly set forth in the claims.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of ref- 'erence indicate corresponding parts in all the figures.

1ft Figure 1 is a vertical section through the central axis of the jack, certain parts being shown in elevation, this view showing the turning attachment in position on the stand, and by means of dotted lines a certain p1v- 1 otal or swinging movement of the socket which supports the last on the turning attachment, is illustrated; Fig. 2 is a side ele vation of the stand and showing the last in position, the socket for the last being shown in cross section; Fig. 3 is a plan of the parts as illustrated in Fig. 1; Fig. 4 is an end elevation of the turning attachment, the upper portion of the stand being shown in side elevation; and Fig. 5 is a side elevation of the last and leg, and showing the same as detached from the stand.

Referring more particularly to the parts, and especially to Fig. 1, 1 represents the base of the stand which has a centrally disposed tubular stem 2, and this stem is provided with a longitudinal slot 3 in its side. In this tubular stem 2, a solid spindle or extension 4, slides longitudinally, and this spindle is provided with a clamping stud 5 which runs in the slot 3, said stud being provided with a wing nut (3 whichenables the spindle to be clamped rigidly to the stem 2,

as will be readily understood. To the upper end of the spindle 4, a head 7 is attached by screw threads 8. This head has a circular disk body with a hub on the under side, which hub screws onto the threads 8, as shown. On the head 7, a swivel cap or swivel head 9 is attached by means of a centrally disposed pivot bolt or pin 10. This swivel head 9 is of circular form and is provided at its edge with an under-turned arm 11 which projects under the edge of the head 7, and is provided with a clamping screw 12, as shown. The upper extremity of the clamping screw 12 engages the head 7 so as to lock the swivel cap rigidly thereto, as will be readily understood. At one side, the cap 9 is provided with upwardly projecting cars 13, and between these cars there is received a tongue 14, which projects laterally from a socket 15. Through the cars 13 and the tongue 14, a pivot bolt 16 passes, as shown.

The socket 15 is provided with a bore 17 having a vertical axis which is disposed directly over and in alinement with the vertical axis of the spindle 4. This socket affords means for attaching a turning attachment 18 in the manner indicated in Fig. 1. This turning attachment comprises a head 19 which is provided on its under side with a pintlo 20 which is adapted to project down into the bore 17, as indicated. The head 19 is provided with a recess 21 in which a clamping pin 22 is pivotally attached at 23. The lower end of this clamping pin extends downwardly into the recess 21, and is normally forced outwardly by means of a coil spring 24 which is received in a spring pocket 25 formed in the inner face of the recess, as indicated. The clamping pin 22 projects considerably above the head 19, and is adapted to engage a socket in the heel of a last 26, applied as indicated. hen the last is in position its instep is adapted to be supported by a toe clamp '27, which toe clamp is adjustably mounted on an arm 28 which projects in a substantially horizontal position from the head 19, as indicated. As shown in Figs. 3 and 4, the body of this arm 28 has its side faces 29 inclined so as to give the effect of a dovetail. connection, and the lower portion of the toe clamp 27 is formed into a saddle 30 which fits the body of the arm, as indicated in Fig. 2. This saddle 30 is provided on one side with a clamping screw 31 by means of which the saddle can be rigidly secured to the arm at any point desired. In order to give the turning attachment 18 sufficient strength, the arm 28 is connected with the head by a deep wedge 32, as shown.

Referring to Fig. 1, attention is called to the form of the tongue 14. This .tongue is of substantially square form, as indicated, but presents a rounded corner 33. When the socket is in the position shown, the lower edge of the tongue lies substan' tially against the upper face of the swivel cap. When the socket is rotated on the axis of the pivot bolt 16, the turning attachment can be swung to the side and downwardly, as indicated by the dotted lines in this view. The outer and upper corner 34 of the tongue, however, will engage the up per face of the swivel cap if a greater rotation than 90 is attempted on the axis of the pivot bolt 16.

The turning attachment 18 can be completely removed when desired, so that the socket 15 may support a last 35. This last is preferably made of iron and is formed integral with a leg 36 which extends downwardly therefrom. At the lower end of the leg 36, as viewed in Fig. 5, a pintle 37 of reduced diameter is formed, so that a shoulder 38 is presented at this point. On this shoulder 38 there is received a washer 39, which constitutes a shock-absorber. This washer is provided at its opposite edges with ears 40, to which the ends of a strap 41 are attached. This strap passes upwardly and across the heel of the last, as shown, and affords means for securely holding the shoe in position on the last. The washer 39 is preferably made of some soft metal which will absorb the shock and protect the socket 1.5. The pintle 37 is of the same diameter as the pintle 20 and fits neatly in the socket 17. The turning attachment can be removed in a moment and the last substituted. In using the last the socket may be swung over on the pivot bolt 16 in the same manner as the turning attachment.

With a jack constructed as described it will be evident that it may be adjusted so as to hold the shoe at any elevation desired, and, furthermore, it can be swung to either side and held in substantially any position desired.

Special attention is called to the feature of constructing the last 35 in one piece with the leg 36. This prevents any relative movement between these parts, and gives a very rigid support for the shoe.

Having thus described my invention, 1 claim as new and desire to secure by Letters Patent,-

Copies of'this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

1. A shoemakers jack, comprising a base. having a tubular stem, a spindle in the stem, means for adjustably securing the spindle in the stem, a head detachably secured to the upper end of the spindle, a second head mounted on the first head to rotate thereon and provided with ears on its upper face and with an arm extending under the first head, a screw in the arm and engaging the under face of the said first head, and amember pivoted between the ears of the head and provided with a socket for receiving the pintle of a shoe support.

2. A shoemakers jack, comprising a base having a stem, a head provided with a spindle in sliding engagement with the stem, means for adjustably securing the spindle to the stem, a second head pivoted upon the first head by a vertical pivot, said pivot be ing in alinement with the spindle of the first head, said head having an arm extending under the first head, a screw in the arm and engaging the under face of the said first head, a member pivoted upon the upper face of the second head and provided with a socket in alinement with the pivot of said head, and a shoe holder having a pintle removably held in the said socket.

3. A shoemakers jack, comprising a base having a stem, a disk-like head provided with a spindle in sliding engagement with the stem, means for adjustably securing the spindle to the stem, a second disk-like head resting upon the first head and pivoted thereto by a vertical pivot, means for looking the second head to the first head, a member pivoted on the upper face of the second head on a horizontal pivot and provided with a socket, said member normally resting upon the second head with its socket in alinement with the pivot thereof, and a shoe holder having a pintle removably held in the said socket.

4. A. shoemakers jack having a socket with a bore therein, a last having a leg with a pintle at the lower end thereof, said leg presenting a shoulder adjacent to said pintle, said pintle being adapted to enter said socket, a shoclcabsorbing washer received over said pintle and seating between said shoulder and said socket and provided with cars, and a strap attached to the ears of the said washer and passing upwardly over said last.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

OSCAR H. NELSON, DAVID LITTLE.

Washington, D. C.

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