US326533A - Take-up mechanism for sewing-machines - Google Patents

Description

i (No Model.) 2 Sheets-Sheet 1.

J. E. WIGGIN. TAKE-UP MECHANISM FOR SEWING MACHINES. No. 326,533. Patented Sept; 15, 1885.

(No Model. 7 2 Sheets-Sheet 2.

J. E. WIGGIN.

TAKE-UP MECHANISM FOR SEWING MACHINES. No. 326,533. Patented Sept. 15, 1885.

PETERS. Pncln-mn n her, Washington. DC.

UNITED STATES ATENT OFFICE. 7

JOHN E. WIGGIN, OF STONEHAM, ASSIGNOB OF TVVO-THI BDS TO GEORGE W. BROWN AND DANIEL H. BURT, BOTH OF BOSTON, MASSACHUSETTS.

TAKE-UP MECHANISM FOR SEWING-MACHINES SPECIFICATION forming part of Letters Patent No.326,533, dated September 15, 1885.

Application filed September 1,1884. (No model.)

I 0 all whom it may concern:

Be it known that I, JOHN E. WIGGIN, of Stoneham, county of Middlesex, State of Massachusetts, have invented an Improvement in Take-Up Mechanisms'for Sewing-Machines, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention has for its object to simplify and improve the take-up mechanism,to there by enable it to more perfectly draw up and tighten the stitch.

My invention is shown as applied to a Wheeler & Wilson machine, style N o. 10; and it consists, essentially, in a tubular or sleeve-like rook-shaft having as its fulcrum the needlebar-actuating rock-shaft of the said machine, the said tubular or sleeve like rock-shaft operating by a suitable arm on a vibrating takeup lever located at the front or head of the machine, as will be described.

Figure 1, in side elevation, represents a Wheeler Wilson machine with my improvements added; Fig. 2, a section thereof in the dotted line 00 m, Fig. 1. Fig. 3 is a sectional detail in the line as Fig. 1; Fig. 4, a partial front end elevation of Fig. 1; Fig. 5, a partial front side elevation of the head of the machine with the take-up lever; and Fig. 6 is a detail showing the take-up cam developed.

The frame-work A A, main rotating shaft B, hook B, eccentric B link B needle-baroperating rock-shaft B*, link B needle-bar B, the take-up-moving cam O, and shoe or block c are all as common in the said Wheeler & Wilson machine, style No. 10, so need not be herein further described.

In the said machine as now commonly built the take-up lever is located in the standard of the upright arm, and a very long loop of thread is drawn out at the side of the overhanging arm. The nearer the take-up lever to the path of movement of the needle and to the stitchmaking point, the more positive the motion of the take-up and the better the stitch.

To enable the take-up lever to be placed in or near the head of the machine, I have provided a long tubular sleeve or rock-shaft, D, which I have placed about the needle-bar-actuating rock-shaft, so that the latter constitutes the fulcrum for the said sleeve or shaft D. This sleeve D at its rear end has an arm, I), which by link 0 is joined to an arm, 0, of a rock-shaft, 0 (see Fig. 2,) provided with a second arm, 0 having at its lower end the shoe a referred to, which enters the groove in the cam O. The sleeve D at its front end enters the bearing (2, as shown by dotted lines, Fig. 1; and at a short distance from its end, as herein shown, the said sleeve D has attached to it firmly by screws 3 3 an arm, 6, the outer end of which, extended through a slot, 4, en-

ters an opening in a swivel-block, f, mounted loosely upon the reduced round end of'the take-up lever G, the said swivel-block being kept upon the end of the said take-up lever by means of a screw,f'.

The take-up lever has its fulcrum at g, and its forward end, provided with the usual thread-pulley, is located close to the side of the needle-bar and vibrates near the line of the center of the axis of the said needle-bar.

The tension device H, of usual construction, is connected with the head of the machine close to the lower bearing for the needle-bar, and occupying such position the take-up, which receives the needle-thread between the said tension device and the eye of the needle, has but a comparatively short loop of thread to act upon, and consequently the stitch may be better made and set.

The take-up herein shown, in the forma tion and completion of the stitch, is operated with relation to the needle and hook in the time and order common. to the said Wheeler 85 Wilson machine.

l. The needle-bar, its operating rock-shaft, and means to actuate it, combined with the sleeve D, surrounding the needle-bar-operating rock-shaft, and with the take-up lever actuated by the said sleeve, substantially as described.

2. The rocking sleeve and its attached arm 6, combined with the take-up lever fulcrumed on the head of the machine, and having the swivel-block mounted'thereon loosely and engaged by the said arm 6, substantially as described.

3. The stitch-forming mechanism contain ing as an element a rocking shaft to actuate the needle-bar, and the tension device H, 10- In testimony whereof I have signed my cated at the head of the overhanging arm of name to this specification in the presence of the machine and the take-up lever fulcrumed two subscribing witnesses.

on the head of the machine, combined with JOHN E. VVIGGIN. 5 the rocking sleeve D and its arm e, and with Witnesses:

means to rock the said sleeve, substantially as G. W. GREGORY,

described. W. H. SIGSTON.

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