US249709A - Sewing-machine - Google Patents

Description

(No Model.)

W. W. WELLS.

SEWING MACHINE. No. 249,709. y Patented N0v.15,1881..

A i f X UNTTEE STATES PATENT @Trient WILLIAM W. WELLs, OF NORWALK, OHIO.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 249,709, dated November 15, 1881.

f Application nieu August 21, 1881.

' lo all whom it may concern:

walk,in the county of Huron and State of Ohio,

haveinvented certain new and useful Improvements in Sewing-Machines; and Ido hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled iu the art to which it appertains to make and use thc same, reference being had to the accompanying drawings, and to the letters or gures of reference marked thereon, which form a part of this specification.

Myinvention relates to sewing-mnchines,and particularly to the mechanism for operatic g the shuttle-carrier of such machines.

The object of the invention if'. to provide mechanism for operating the shuttle-carrier of such construction that the reeiprocatin g movement ofthe shuttle lever and carrier may be perfectly even and steady, thus avoiding oceasionaljerks of the carrier and consequent dropping of stitches.

In the drawings, Figure l represents a reverse plan view ot' the bed or cloth plate of a sewing-machine provided with my improvement. Fig. 2 is a detail View of the connecting-links and their eccentrics. Fig. 3 is a vertical section on the line y y, Fig. 2.

A represents the bed-plate, having the usual slotted end, A', and the vertical post B, upon which the sleeve C Ot' the shuttle-lever turns. A suitable bushing, e, is used between said shaft and sleeve. The lever D extends laterally to the end A' of the bed-plate, where the shuttle-carrier E is attached in the ordinary manner. The sleeve Gis provided on its sides with two ears, c c', said ears being diametrically opposite each other in different horizontal planes, and provided with screw-threaded perforations j'.

Near the end A2 of the bed-plate the revolving shaft G, operated from the driving-shaft ofthe machine, projects, and upon said shaft (No model.)

are secured two ecceutrics, I I', arranged eccentrically to each other.

H H' represent two con necting rods or links, each having at one end a loop, It and 7L', to fit one of the eccentrics, and at the opposite end a smaller loop, and w', to admit of their attachment to the ears of the sleeve G. The loop 7L of the lilik H is fitted over the eccentric I, While the opposite end of said link is connected by means of its loop :1: and a screw,j, to the upper side ot the ear o. The link H' is then placed upon its eccentric I' in the same manner, and its loop x' is pivoted to the under side ofthe ear o' by a screw,j'. A suitable retaining-washer, k, is then secured to the shaft G by a screw, g, and a cap, z, is fitted on the post B and held by a screw, e'.

By the construction above described a perfectly steady movement of the shuttle-carrier is obtained, as the sleeve C is evenly held-and the strain upon it is borne equally by each side, thus avoiding all tendency to looseness in its connection with the vertical post B, as is the case where a single link is used to operate the carrier.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a sewing-machine, the combination, with the post B, shaft G, and the shuttle-lever having cars c o', of two eccentrics, I I', and two links, H H', as set forth.

2. The combination, with the shaft G, post B, and the shuttle-lever D, of two eccentrics, I I', and two ears, c o', cap e', and two connectin g-links connected to said eccentrics and ears, as and for the purpose set forth.

ln testimony whereof I affix my signature in presence of two witnesses.

l WILLIAM W. WELLS. Witnesses:

GEORGE W. WELLS, C. S. PARKER.

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