US403725A - Island - Google Patents

Description

(No Model.

3 Sheets--Sheet 1 s E N I nn. G .A .NlM G GN GT. I W. Ww Bw .F Gm &V E TD TG EN un P MM Bw` .W TURRW M2 S7, E3 R0 P4 nm N Patented May 21 1889.

(No Model.) 3 Sheets-Sheet 2.

J. BARTLE'I'T 8v G. B. WIGGIN. PRESSEE FOOT IIITING DEVICE EUR SEWING MACHINES.

No. 403,725. Patented May 2141889.

(No ModelL 3 Sheets-Sheet 3.

J. BARTLETT & G. B. WIGGIN. PRESSER FOOT LIPTING DEVCE FOR SEWING MACHINES.

Patented May 2l 1889.l

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NTTED STATES ATENT FFICE.

JONATHAN BARTLETT, OF EPPING, AND GEORGE B. VIGGIN, OF SUTII NE\V MARKET, NEIV HAMPSHIRE, ASSIGNORS OF ONE-HALF TO JOHN \V.

H OARD, OF PROVIDENCE, RHODE ISLAND.

PRESSER-FOOT-LIFTING DEVICE FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 403,725, dated May 21, 1889. Original application filed July 28, 1887, Serial No. 245,561. Divided and this application filed May 3, 1888. Serial No. 272,745.

To all whom it may concern:

Beit known that we, J ONATHAN BARTLETT, of Epping, and GEORGE B. VIGGIN, of South New Market, in the county of Rockingham and State of New Hampshire, have invented certain new and useful Improvements in Presser-Foot-Lit'tin g Devices for Sewing-Machines; and we do hereby declare that the following is a full, clear, and exactdescription of the in- Io vention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

Our invention relates to sewing-machines generally, but more particularly to the class of waxed-thread machines adapted for sewing shoes or other articles made from leather or zo other kindred material; and it has special reference to the presser-foot and lifter and parts auxiliary thereto.

In the accompanying drawings, Figure l is a front elevation of a machine embodying our invention. Fig. 2 is a side elevation. Fig. 3

is a vertical section from front to rear; Fig.

4, a detail showing lever U and adjacent parts.

Similarletters represent like parts in all the figures.

A is the base of the machine, and B B are the two vertical standards for supporting the mechanism.

O is the driving-shaft, which passes through the standards B B,having the driving-wheel D at one end and the cam E for reciprocat` ing the needle at the other. Secured to the driving-shaft O, between the standard B and wheel D, is a gear, F. A small gear or pinion, G, is journaled on the standard B under 4o the gear F, and engages with said gear, while a third gear, H, engages with the gear G and is secured under said gear upon a shaft, I, which passes through the standards B B. To t-he opposite end of said shaft from the gear H is a cam, J, for vibrating the needle-carrying frame. Keyed to the shaft O, between the standards B and B', is another cam, K, also for a purpose hereinafter to be described. L

is an oscillating frame or standard, which is (No model.)

pivoted to the top of the standard B ahdrests against the same. This frame L has a box or casing, M, in which the cam E and other parts of the machine are adapted to work; and N is an opening in the trame L, in which revolves the cam J. The cam E is curved on one side, E', and straight on the other side, E2, so that when the cam revolves in one direction the curved surface will ride over and operate the blocks Z1 o', while any turning to the opposite direction willv bring the shoulder, which is formed by the straight side D2, in contact with the blocks and prevent any further turning in that direction.

R R are brackets extending out beyond the front of the machine, and through vertical holes in the ends of these brackets the presserfoot bar S is adapted to slide. The presserfoot S is attached to the presser-foot bar in any appropriate way. A coil-spring, S2, encircles the bar S, between the bracket R and an adjustable sleeve, S3, on said bar. The function of this spring is to press the presserfoot down upon the horn upon which the goods are placed and seen.

Pivoted to the bracket R is a lever, T, one end of which has a concave recess upon its upper side, which is adapted to press against the under side of a roller, t, journaled to the bar S above the bracket R. To the other end of the lever T is loosely pivoted a vertical rod, t.

U is a lever, which is pivoted to the standard B on the other side of the shaft C from the rod t', and this lever has a hole through which the lower end of the rod t passes, Vand which is large enough to allow of a free movement of the rod in said hole. The lower end of the rod t is screw-threaded, and has a nut below the lever U to keep the rod and lever together and to adjust them relatively to each other. The lever U passes under the cam K, and is adapted to be held against the said cam by the nut on the end of rod f. A handle, u, is attached to the free end of the lever U to allow the presser-foot to be raised by hand.

The presser-foot'is raised by the handle of the lever U, and the material to be sewed is placed between the presser-foot and the horn W, When the former is allowed to drop upon the material and hold it in place. The position of the parts will then be as shown in Fig. l. The revolution of shaft C causes the cam K at the proper period to operate the lever U, and thus raise the presser-foot S, so as to alloW the material or Work to be fed onward. The revolution of the shaft C Will also cause the shaft I to revolve through the instrumentality of the gears F G H, and just after the cam K has begun to operate the lever U to raise the presser-foot the cam J will come in contact with the rectangular piece 'L' and cause the frame L to oscillate to the left. The needle-bar P being hung on this standard will also be carried to the left, and the needle being through the material Will carry the same with it to the end of the stroke.

The' distance of the oscillation of the frame L determines the length of the feed of the material to be sewed and also of the stitch. The distance is regulated by the lever V and screw-pin Z, before named. By adjusting the pin Z in the slide k2 nearer to the fulcrum 7c, a longer feed and stitch are obtained.

O ur machine can be used for sewing almost any material; but it is more particularly adapt.- ed for sewing shoes, either turned or Welted, the'narroW edge afforded by the horizontal top 112 of the horn WV bein g particularly adapted for Welted goods.

This application being one of the divisions of our original applications filed July 28, 1887, Serial No. 245,561, We do not herein claim anything claimed either in that application or in either of the other division applications Serial Nos. 272,746 and 272,747, filed May 3, 1888.

l. The combination of the presser-foot and its bar, brackets R R, frictional roller t, lever T, vertical rod t', pivoted to said lever, lever U, the nut serving to hold together and to adjust relatively this lever and rod, and cam K on the revolving short driving-shaft C, these parts being all located above the table and co-operating substantially as shown and described.

2. In combination with the presserfoot bar, the brackets R R', roller t, lever T, the rod t', pivoted to said lever, cam K on the short revolving driving-sham and lever U, having a handle on its free end and pivoted at its other end to a standard, all located above the table, substantall y as and for the purposes described. l

JONATHAN BARTLETT. GEORGE B. VVIGGIN.

NVitnesses:

GEORGE W. HILLIARD, WILLIAM II. BELKNAP.

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