US448299A

US448299A - Lasting-jack

Info

Publication number: US448299A
Authority: US
Publication date: 1891-03-17
Anticipated expiration: 1908-03-17

Description

RQC. NASH. LASTING JACK.

(No Model.)

No. 448,299. Patented Mar. 1'7, 1891.

PATENT RALPH C. NASH, OF NORTH PEMBROKE, MASSACHUSETTS.

LAsTlNG-JACK.

SPECIFICATION forming part OfLetters Patent No. 448,299, dated March I7, 1891. l

Application filed November 11, 1890. Serial No. 371,027. (No model.)

To @ZZ tub/ 0m it may concern.-

Be it known that I, RALPH C. NASH, of North Pembroke, county ot' Plymouth, State of Massachusetts, have invented an Improvement in Jacks Afor Lasting Shoes, of which the following description, in connection with the accompanying drawings, is a specification, like letters and figures on the drawings representing like parts.

In the manufacture of boots and shoes the last containing the shoe is mounted on a jack, where it is held firmly while the shoe is being acted upon.

The object of this invention is to improve the jack so that it may readily be adjusted vertically to the height desired for the operator, and also so that the jack may be tipped when desired, and I have also combined with the jack a swing-seat, and this 4seat is made adjustable vertically.

Figure l' in side elevation represents a jack embodying my invention, and Fig. 2 a Section in the line 0c.

The column of the jack is composed of two parts A A', adj ustably connected by bolts A2, in order that when the base of the standard rests on the iioor the upper endot` the part A may be made to bear against the usual bench B, the standard by reason of its adjustment being adapted to abench of any usual height. The shank B ot' the jack is slotted at B2 for the reception of the clamping-screw B3, by which to hold the shank in any desired position vertically, according to the height ot' the operator. a rocking head b, notched at its lower end, as at 2, to be engaged by a locking device, shown as a bolt 3 and a spring 4 to actuate it, the said bolt sliding in bearings 5 5. The lower end ot the locking device is connected by cord or link ZJ with a lever B2, so that by pulling the boot on the lever the locking device may be tipped about the pivot ct. The upper end of the head is slotted and properly shaped to receive upon or in it the heelpin carriage c, and the toe-rest carriage d. The heelpin c rises from a block c2, pivoted at c3 on the carriage c, an extension e4 of the block having jointed to it a rod c5, which is extended down through the head and surrounded by a spiral spring c6, a nut c7 being applied to the lower end of the said rod to act This shank has pivoted on it at a against one end of the said spring, the latter normally acting to keep the block andheelpin in position. (Shown by full lines, Fig. l.)

The toe-rest carriage has a toe-rest d adjustably attached to it by a screw d2.

To apply a last (shown by dotted lines) to the jack, the heel-pin will be pulled back by hand into the position shown by dotted lines, and the last having been put on the heel-pin the toe of the last will be laid on the toe-rest, as represented by dotted lines, the spring c6 keeping it seated on the toe-rest. The'base ot' the column has two ears c e to receive a pin e', which pivots to the column the arm e2, which supports the rod e3 of the seat e, the said rod having a sliding iit in a hub at the end of the arm e2, the hub having aset-screw e5 by which to secure the seat in adjusted position.

To enable the arm e2 to sustain a greater weight, I have connect-ed to it a leg f, the lower end of which enters a bearing f on the base of the column, and the leg turns therein as the seat is swung on the pivot e'.

I claim- 1. In a lasting-jack, a column made in two parts sliding longitudinally one upon the other and adj ustably connected together, combined with the shank B adj ustably connected to each of said parts, a head, and a jack mounted on the said shank, substantially as described.

2. In a lasting-jack column, the shank adjustably attached thereto, the head pivoted 011 the shank and notched at its lower end, and a locking device to co-operate with said notches and lock the head, combined with a heel-pin and toe-rest, to operate substantially as described.

3. The jack-column and the jack having a shank adjustable on the said standard, combined with a connected pivoted seat and with means to adjust the seat vertically, substantially as described.

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

RALPH C. NASH.