US135930A - Improvement in sewing-machines - Google Patents

Description

2 Sheets--Sheet 1 G. MOORE.

"1. Sewing-Machines.

Patented Feb. 18,1873.

Inventor, Q

Affest,

AM PHOTO-LITHOGRAPHIC ca NK(DsEuRNE's mucus.)

. the pulley F is in the form of 'tise in the UNITED STATES.-

PATENT "OFFICE.

Jane C. MOORE, on MADISON, INDIANA.

IMPROVEMENT lN SEWING-MACHINES.

Specification forming part of Letters Patent No. 135,930, dated February 18, 1873.

To all whom it may concern.-

Be it known that I, JEHU O. MOORE, of

Madison, in the county of J elferson and State of Indiana, have invented certain Improvements in Sewing-Machines, of which the following is a specification Fig. 5 is a view showing the catch for holding the'plate on.

Like letters of reference designate corresponding parts in all the figures.

A is the bed of the machine; B B, the uprights for the support of the plate (J. D is the spindle, and E is the eccentric for giving motion to the needle. These parts are the same as those in the Wheeler & Wilson machine. F is a grooved pulley of as great diameter as the plate 0 will admit, formed in one piece with the sleeve G, eccentric E, and cam H, and secured to the spindle D by means of setscrews 60 a in the usual manner. One face of a cam, which moves the feed bar forward. The cam H serves to raise the said bar at the proper time, as in the present machine. The rear end of the feed-bar J has a bearing in a morguide K, and is tipped with rawhide where it bears against the cam. The guide Kis rigidly secured to the bed of the machine at b b. A spring, L, at the side of the feed-bar moves it back at the proper time.- The forward end of the bar is slotted to receive the shank of the feed-points M, and is guided by a slotin the upright-B. The feedbar is bored and tapped over the cam H, and a bearing-point, c, of hardened steel or rawhide (preferably the latter) inserted to take up the wear, at the top for adjusting the same. A lever, N, for regulating the length of the stitch, as shown in Figs. 3 and 4, is riveted to the under side of the plate, and its cam-shaped end operates against a stud, e, of rawhide 0n the feed-bar. This stud is sufficiently high to impinge against the under side of the plate when the machine is run rapidly, and thus prevent the rattling of the feed-bar against the plate, as it does in the present machine. This insures noiseless action.

To remove the feed-bar, compress the spring L slightly until it clears the hooki, and remove it then slide the bar forward until it disen gages from the mortise in K, and lifts it out. Replace it by a reverse operation. Replace the plate by first engaging the hooks '9 g,- then bring down the rear end and the pins h It will engage; then turn the cam P until all is tight and secure.

By the use of a feed-bar, as above described, with both its bearings on one side of the pulley, I am enabled to use a large pulley and a round belt, both of which I consider to be improvements.

Having thus described my invention, 1

claim The feedbar J, supported in a mortise in the piece K in front of the pulley F, and provided with a stud, e, of raw hide to prevent contact of said bar with the-plate O, substantially as described, and for the purposes set forth.

JEHU O. MOORE. Witnesses:

HENRY O. OONNETT. WILLIAM T. FRIEDLEY.

and a set-screw, d, inserted

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