US30641A - Improvement in sewing-machines - Google Patents

Description

v UNITED STATES PATENT CFFICE.;

n. s. PAYNE, or CHICAGO', ILLINOIS.

Specification forming part of Letters Patent No. 30,64l, dated November 13, 1860.

v erence being had to the accompanyingdrawings,forming a part of this specification, in which- Figure l represents a side view; Fig. 2, a bottom view; Vand Figs. 3 and 4 vertical crossoections, showing portions of the machine.

Similar letters of reference in each ofthe l several'gures indicate corresponding parts.

The nature of my invention consists in areciprocating disk and two loose'feed-rings arranged upon the circumference of said disk, in combination with a needle working between the two feed-rings. Y

To enable others skilled in the art to make and use my invention, l will proceed to describe its construction and operation.

The feed apparatus of this sewing-machine consists of a disk, A, upon a horizontal axis, B. The rim of the disk is made with a groove on each side around the whole circumference of the disk, so as to form a ridge, C, between the two grooves. Two loose feed-rings, E, the roughened surfaces of which project a little above the ridge C, are placed one into each of the grooves of the disk. Screws D are screwed into the sides of the disk near its eircumference, and so that their heads extend somewhat beyond the circumference of the grooves. These screw-heads serve to prevent the feed rings E from slipping olf the disk in' a lateral direction parallel with the axis of the disk. A slot, F, is made through the top part of the disk, passing through the ridge C and rin of the disk, in the middle, between the two feedrings. This slot is somewhat longer than the greatest arc through which the disk may be allowed to reciprocate, l,and the object of this slot is to open a free passage for the vertical needle G betwee the two feed rings and through the rim of the disk. This needle Gis attached to a needle-carrier, H, and together with it worked by a lever, I, and cam J, upon driving-shaft K', in the usual manner, all these parts being of the usual construction. A small cam, L, upon.- shaft K, works in conjunction with a pin, M, projecting radially from the ridge C of the disk." A spiral spring, N, extending from some point of the machine-frame to the outer end of pin M, holds the pin continually against the circumference of cam L, so that the pin and the disk, together with it, receive a reciprocating Inotion while the cam L revolves, the axis of the disk being the center of this reciprocating motion. A piece of leather, between the cam Land the surface of the feedrings, and is at one end fastened to the pin M, its other end being hung to the frame of the machine by spring or springs l?, so as to stretch and keep the piece of leather from wrinkling. As the cam L revolves and begins to depress the pin M, causing the disk to make part of a revolution in thisv direction, the leather is at the same time pressed by the cam against the ronghened surface of the feed-rings, and thus the feed-rings are caused to move siliiultaneously with the leather and disk in the same direction, so as to feed the cloth Q forward, which is placedbetween the pressure-pad R and the top of the feed-rings; but'asthe cam L recedes from the pin M, the latter, together with the disk, returns to itsroriginal position. As the cam, however, recedes from the pin, it recedes also from the leather, so as to cease to press it against the surface of the feed-rings, and the feedrings will not participate inthe return mot-ion of the disk, the friction between the feed-rings and the rim of the disk being overcome by the friction of the Toughened sur-` face of the feed-rings and the cloth Q held down by the pressure-pad. Thus the feedrings are made to feed the cloth while the disk moves in o ne direction and .to stand still dur-' ing the return motion of the disk. The obj ect of employing two feed-rings, instead of only one, is to allow the needle. G to work between the two and feed thecloth on both sides of the needle. The cloth will thus be fed in a` straight line, and the tendency of a single feedsurface at one side of a needle to turn the cloth while feeding it forward, and thereby to feed in a curved line, is eifectually overcome byarranging the feed-snrfaee in two sections, `as above described.

A set screw, S, working through female screws in two brackets, .T T, extending from 'the frame of the machine, can be screwed in.

more or less, so as'to come into contact witha flange, U, projecting from the side ofthe disk,

O, or similar soft material, is placed 'and thereby to liinit or altogether stop, if so i desired, the reciprocating motion ofthe disk,

:ind together with it the feed-motion of` the feed-rings.

The horizontal needle V receives a. reciprocating motion in the direction ofits lengthv from the lower arm of lever I, and is also inode to reciprocate in'a, horizontal and lateral 1lirection in a manner hereinafter 10 be described in 'order to perform the peculiar stitch of the machine in conjunction with n verticalxneedle. The needle V has a', bem'- ing. near it`8 forward end, in a crneebar, W, held in suitable horizontal guillewziys. 011e end. of this cross-'har is, by a spring, X, pressed against :ind acted upon by a. com, Y, upon the Witnesses:

GOODWIN Y. AT LEE, G. F. G. DrnTnRIoH.

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