US105382A - Improvement in presses for perforating shoe-tips - Google Patents

Description

2 Sheets-Sheet 1.

QM P I T N 0% S PM MM A TP SE n B 0 BF S S E R P No. 105,382. Patented July 12, 1870 2 Sheets--Sheet 2.

E. B. STIMPSON. PRESS FOR PREPARING SHOE TIPS.

Patented July 1-2, 1870.

ITED STATES ED IN B. STIMPSON,

PATENT OFFICE.

OF NEW YORK, N. Y.

iMPRoVEMENrfm IPRE'S'SIESFOR PERFORATIING SHOE-TIPS,

Specification forming part-of Letters Patent No. 105,382, dated July12, 1870.

To all whom it mag concern.- l ,Be it known that LvEnwm B. STIMPSON, ofythe city, county, and State of New York,have invented a newanduseful Improvement in Presses for the Perforation of Shoe-Tips and other Articles, of which the following is a full,

clear, and exact description, referencebeing had tothe accompanying drawings, forming part of this specificatioinand in which-- Figure 1 represents:a front'elevation of my improved press; 'Fig. 2,a partly-sectional side elevation thereof; Fig, 3, a horizontal section through the plunger portion of the press, taken as indicated by the line a: m in Fig. 2; and Fig.

i a 4 ai'urtherhori zon tal section, taken as denoted by'the line 3 3 l Similar letters'wof reference indicate corre sponding parts.

My in vention has reference to presses for the perforation of shoe. -tips and other parts of shoesfor other articles; and it consists in novel means forholding or backing the punches.

Referring to theaccompanyingdrawings, A-

gepresents thefiframe of the, press, and B its ,edrm, i G is the stem or body of the plunger, and i D thelever by which it isoperated through an eccentric, a, andlink-motion b.

Ois a lower flange orjplate portion cast on the plunger for the purpose of carrying'in a steadyand secure manner the punch-holder E, which is also: of plate form, and is] held by screws ff to the flange 0, To avoid making this flan ge Q and the steinO' in separate pieces, which would be necessary where the plunger entered from above through the socket in which thestem works,-Ienter the same through the bed B of the press, to which end said bed is formed with a hole, d, through it, of sufficient size to allow of the flange C, as well as the stem (3, being passed up through it, and this hole I covcrwith a steel die-plate, 1*, having perforations in it for the punches e to enter. after their passage through the leather or matcrial being worked. Thesepunches e are of any required size and number, and arranged to form an y particular pattern, the holes in the fldie-plate being madeandfarranged to correspond, accordingto the ornamental configuration it is required to give the'tip orpert'orations therein. Said punches. c are secured to i i the holder E by being driven into or through it from below, and are backed'at their tops by a steel plate, G, which is interposed between the flange G and the holder, and which serves to prevent the upper ends of thepunches from sinkiu gor being worked by the punching action of the press into the'softer cast-iron of the flange G. The screws ff serve to secure the holder E and steel plate G to the flange 0'.

- H isaplate-puuch.stripper arranged ata suitable height, as regulated by washers g g. above,

the die-plate F, to allow of theint-roduction of the leather being worked over the latter. This plate-stripper is perforated to correspond with the punches, and to allow of the free passage of the same therethrough. It is arranged to extend across orover the die-plate, and being made of a thin steel plate secured at its ends by screws 0 c, which hold it and the die-plate to the bed, is necessarily elastic; but as it is important to prevent any binding action on the punches, that it should not spring, I stay it a on opposite sides, at or near the middle of the length, by a pin, I,in front screwed into the frame, and a pin, I, in rear secured to said stripper, andhearing at its upper end under the socket portion of the main frame.

The'stemO of :the plunger is made round, whichis a much easier shape to establish a truefit of it and the socket in which it slides than is a square form; but as in working a series of small punches extending over a large area, as is the case here, it is very important that there should be no turning or deviation in any way from a. straight course of the plunger-stem. To counteract any possible failure in this respect as due, to the round shape of the stem, I steady and guide the plunger at distaut points on opposite sides by means of pin projections K K from or at the ends of the holder E, said pins playing, as the plunger is reciprocated, through holes 8 s in the stripper

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