US570154A

US570154A - Shoemaker s last

Info

Publication number: US570154A
Authority: US
Publication date: 1896-10-27
Anticipated expiration: 1913-10-27

Description

(NoModell) J. A. COLBY.

SHOEMAKERS LAST.

No. 570.154. Patented Oct; 27, I896.

FIG-6 (J WITNESSES! I r 2 7 'fiz 'YQKM f UNITED STATES PATENT ()FFICE.

JESSE ALLEhT COLBY, OF XVILMINGTON, DELAXVARE.

SHOEMAKERS LAST.

SPECIFICATION forming part of Letters Patent No. 570,154, dated October 27, 1896.

Application filed August 1, 1894. Serial No. 519,172. (No model.)

To all whom it may concern:

Be it known that I, JEssE ALLEN COLBY, a citizen of the United States, residing in Wilmington, in the county of New Castle, in the State of Delaware, have invented a certain new and useful Improvement-in Shoemakers Lasts, of which the following is a true and exact description, reference being had to the accompanying drawings, which form a partthereof.

My invention relates to shoemakers lasts, and has for its object to provide improved means for securing the insole to the sole or bottom of the last and an improved device for locking the last and last-block together.

Generally speaking, my invention consists in a retractable pronged plate situated in a cavity of the last-sole and arranged to be forced into and held in operative position, preferably, by the seating of the block in its recess in the last, though other means maybe employed for this purpose. Preferably the plate is retracted by the action of a spring, and I lock the block in position by a sliding bolt situated on the top of the block and arranged to engage a detent on the top of the last.

My improvements in detail will be best understood as described in connection with the drawings, in which they are illustrated, and in which Figure 1 is a side elevation, partly in section, on line 0c m of Fig. 7 of a last havingmy improvement. Figs. 2, 3, 4, 5, and 6 are views of details of construction. Fig. 7 is a plan view of the toe ofthe lastof Fig. 1. Fig. 8 is a side elevation of a modified construction of last, partly in section, on line y y of Fig. 9, which is a plan view of part of said last. Fig. 10 is a perspective view of a plate usedin the construction illustrated in Fig. 8. Fig. 11 is a side elevation, partly in central section, of the toe of a last, showing another modification of my invention; and Fig. 12 shows a modified form of metal sole-plate.

A is the last 5 A, the top thereof; A the block-recess, and A a cavity formed in the bottom orsole for the reception of the pron ged plate, A being a channel for the rod or pin, which actuates the pronged plate.

B is the last-block, the top. thereof beingindicated at B. Generally the point I) of the block is held in place byaprojection a of the last. but a dowel-pin or any convenient device may be used for this purpose 0 indicates a bolt formed of a plate of metal and moving across the top of the block to engage a detent on the top of the lastin connection with a device of some kind for holding the point of the block in place. This forms a simple, cheap, and effective lock. Preferably the bolt 0 is'formed with slots 0 0, through which pass screws D, which hold it to the block and on'which it slides, the bolt having a recessed jaw G which engages ascrew D on the top of the last. \Vhile any convenient way of moving the bolt may be employed, I prefer to form it with a fold C and to provide a lever E, the lower edge E of which rests in a recess B of the block, and which is slotted at E to receive the fold C of the bolt, as shown in Fig. 1. The upper part E of the lever serves as a handle for moving the belt, which, of course, follows the rocking of the lever. I do not in this application claim this particular locking device, as it is simply shown to illustrate a convenient device for keeping the block in position in the last. "This lock will, however, be made the subject-matter of anolher application.

F is a plate preferably dished to the dome form shown and provided with prongs F at its lower edge. This plate is situated in the cavity A and is movable therein to such an extent that its prongs can be projected beyond the sole of the last or retracted within the cavity, and the mouth of the cavity is preferably covered by a metal plate having perforations H in it,through which the prongs F can project. These plates are indicated at H and may consist of a metallic plate covering the whole of the last-bottom, as in Fig. 1, or in a plate of only such size as is necessary to close the cavity, as in Figs. 11 and 12.

G is a spring the function of which is to retract the pronged plate so that normally the prongs will not extend beyond the last-sole.

I is a rod extending from the cavity A through channel A which preferably leads to the block-recess A. The function of the rod is to press the pronged plate outward, so that the prongs will be brought to operative position to engage the insole. In Fig. 11 the head I of the rod rests directly in contact with the plate I but preferably I place in cavity A a lever L, which should be dished to it over. the top of the domed plate 1 and which is f ulcru med at its end L on a shoulder A in cavityA In this construction the rod I rests against the free end L of the lever and transmits motion to the pronged plate through it.

N, Fig. 1, indicates a guide pin which passes through holes I and L" in the plate and lever and serves to center them and the spring G. The pin I is of such a length that its end projects somewhat beyond the surface of the block-cavity and the block is provided with an abutting surface J, which, when the block is being seated, comes against the rod and presses it in,directly or indirectly, against the pronged plate, which, by this means, is forced to operative position and held there as long as the block is locked in place upon the last. As by sharpening or otherwise the prongs may vary in length it is desirable to provide means for adjusting the throw of the rod, and this is conveniently done by making the abutment adjustable, as by using a screw J, Fig. 1.

If desired, the piirl maybe made to serve the purpose of a dowel-pin to hold the point of the block in place, such a construction be ing shown in Fig. 8, where a plate K extends beneath the pin, as shown.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A last having in combination apronged plate, the prong or prongs whereof are adapted to extend through the sole of the last, and which is adapted to be retracted so that its prongs will be withdrawn into the body of the last, a rod extending through the body of the last so that one end projects into the block-recess while its other end is arranged to exert pressure as described against the. prong-plate, and a block arranged, when seated in the blocki'ecess, to press against said rod, and through it to force the prongs through the sole of the last.

A last having in combination a pronged plate, the prong or prongs whereof are adapted to extend through the sole of the last, and which is adapted to be retracted so that its prongs will be withdrawn into the body of the last, a spring arranged to normally press in and retract the pron g-plate, a rod extending through the body of the last so that one end projects into the block-recess while its other end is arranged to exert pressure as described against the prong-plate, and a block arranged when seated in the block-recess, to press against said rod, and through it to force the prongs through the sole of the last.

A last having a cavity as A formed in its sole in combination with a perforated metal plate II covering said cavity, a pronged plate situated in said cavity, a spring arranged to retract the plate and withdraw the prongs into the cavity, a rod GXiJGl'ldll'lg from the said cavity into the block-recess and a block arranged to rest in said recess, and by pushing on said rod to force the prongs through the sole of the last.

4. In combination with a last having a spring-retracted prong-plate as described, and a rod arranged to force the prong-plate outward when acted on by the seated block, a block, and an adjustable rod-abutment secured thereto.

5. In combination with a last having a cavity in its sole, a dished plate having prongs on its edge situated in said cavity and arranged so that its prongs can extend beyond the lastsole, a spring arranged in the cavity of said plate to retract it, a rod arranged to push the pronged plate outward and a block arranged to thrust against the rod when seated on the last.

G. In combination with a last having a cavity in its sole, a pronged plate situated therein, a pivoted lever, as L, resting against said plate, a spring arranged to retract the plate, a rod arranged to rest against the lever, and acting through it to push the pronged plate outward, and a block arranged to press against said red when seated.

7. In combination with a last having a cavity in its sole, a dished dome-shaped pronged plate situated in said cavity, a pivoted lever having a dished center which rests over the dome of the pronged plate, a spring arranged to retract the plate, a rod arranged to push against one end of the lever and through it to force the pronged plate outward and a block arranged to press against the rod when seated on the last.

8. In a last, the combination of a retractable pronged plate arranged in the sole thereof, a plate-actuating rod extending through the last-bod y into the block-recess, a block arranged to press against said red when seated, and a sliding bolt-lock arranged on the top of the block and last to lock them together.

JESSE ALLEN COL KY.

IVitnes ses:

ALF. I-I. FABER, D. STEWART.