US413757A

US413757A - Sewing machine

Info

Publication number: US413757A
Authority: US
Publication date: 1889-10-29
Anticipated expiration: 1906-10-29

Description

UNITED STATES PATENT OFFICE.

CHARLES LEYVY, OF NEXV YORK, N. Y ASSIGNOR TO JACOB KOHN, OF

SAME PLACE.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 413,757, dated October 29, 1889.

Application filed November 17, 1888- Serial No. 291,126. (No model.)

To all whom it may concern.-

Be it known that I, CHARLES LEWY, of the city, county, and State of New York, have invented certain new and useful Improvements in Sewing-Machines, of which the following is a specification.

This invention relates to an improved chainstitch sewing-machine which is intended to be used by children as a toy sewing-machine, so as to enable them to do all kinds of sewing; and the invention consists of the combination, with a supporting main standard having a yoke-shaped upper arm provided with a grooved head at one end and a fixed guide-rod at the other end, of a driving crankshaft which carries a loop-forming hook at one end and a crank at the opposite end, a yoke-shaped needle-bar provided with a guide-hook at one end and guide-eyes'at the opposite end, and a connecting-rod pivoted to a crank of the driving shaft and the needlebar.

The invention consists, further, of certain details of construction and combination of parts, which will be fully described hereinafter, and finally be pointed out in the claims.

In the accompanying drawings, Figure 1 represents a side elevation of my improved sewing machine. Fig. 2 is aplan view of the same, and Figs. 3 and 4 are respectively detail side elevations of the supporting main arm and of the needle-bar of, the machine.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents the main standard of my improved sewing-machine, which is formed. of a curved upper part A, having an enlarged head a, an upright side portion A anda lowerpart A having a bracket-shaped end a. The upper arm A and side portion A are of yoke shape and made in one integral casting with the lower bracket-arm A The vertical side portion A supports on projecting lugs a a a stationary guide-rod A, as shown clearly in Figs. 1 and 3. The lower bracket-arm A is attached by a disk-shaped enlargement to a wooden or other base B, which is clam ped. or screwed to the table or other support, so as to be rigidly held in position.

A driving crank-shaft C is supported in bearings 12 of the lower arm A said crankshaft carrying at the outer end below the table D, attached to the bracket 0/, a rotary loop-forming hook E, while to the opposite end a crank E and crank-handle E are applied. A needle-bar F, made of yoke shape like the upper arm A is guided at one end by eyes f along the guide-rod A of the side por- 'tion A and at theopposite end, to which the needle is attached, by a hook-shaped guidepiece f in a guide-groove f in the head a of the upper arm A, as shown in Fig. 2.

The crank E of the driving-shaft O is connected by a pivot-rod c with a pivot e, secured to a stud 6 cast integral with the needle-bar, so that by rotating the driving-shaft C the crank A and the connecting-rod e impart a vertically-reciprocating motion to the needle-bar F along the upper arm A. A bracket-plate 9, having an eye g, connects the reciprocating needle -bar F with a second guide-rod 9, supported sidewise of the side portion A of the standard A, the rod 9 serving for supporting a spiral spring 9 which assists in the upward motion of the needlebar and equalizes the motion of the same in place of the flywheel generally used in sewing-machines. The upper arm A is further provided with a vertically reciprocating presser-bar G, an eye for the needle-thread, a lever for operating the presser-bar, and other accessories.

The sewing-machine is simple and inexpensive in construction, as the main parts can be made of cast metal and easily assembled. It

is operated by hand, enables children to do regular chain-stitch sewing, and serves them as a useful yet entertaining and instructive toy sewing-machine.

Having thus described my invention, I claim as new and desire to secure by Letters Patent-- 1. The combination of a supporting main standard having a yoke-shaped upper arm provided with a grooved head at one end and a fixed guide rod at the other end, a driving crank-shaft carrying the loop forming hook at one end and a crank at the opposite end, a yoke-shaped needle-bar providedwith a guidebook at one end and guide-eyes at the opposite end, and a connecting-rod pivoted to the crank of the driving-shaft and the needle-bar,

' substantially as set forth.

needle-bar and having a guide-eye, and a cushioning-spring applied to a fixed guide-rod of the main arm, so as to assist in raising the needle-bar, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

CHARLES LEWY.

Witnesses:

PAUL GOEPEL, CARL KARP.