US116520A - Improvement in sewing-machines - Google Patents

Description

SPBUL MULDER.

SEwm mmm;

. PMENTEB JUN'27'1871 cuAnLEs H.w|LLcox mus ummm UNITED STATES PATE ' 'CHARLES E. wILLOOX, OE NEw YORK, AND cYEUs OAELETON, OE BROOKLYN,

' NEW YORK, ASSIGNORS TO THE WILLGOX & GIBBS SEWING-MACHINE COM- PANY, 0F NEW YORK CITY.

IMPROVEMENT IN SEWING-MACHINES.

Specification forming part of Letters Patent No. 116,526, dated June 27, 1871.

.To all 'whom t may concern:

Be it known that we, OHAELEs H. WTLLOOX, of the city, county, and State of New York, and CYRUs GARLETON, of Brooklyn, in the county of Kings, and State of New York, have invented certain new and useful Improvements in Sewing-Machines, of which the following is a specification:

The invention which is the subject of this patent relates to spool-holders for sewing-machines, and is adapted more particularly to that class Of sewing-machines where the thread is clamped firmly between two surfaces until the loop is almost or quite drawn up to the cloth and then suddenly released. But, while particularly adapted for use in this connection, it may also be employed with'other machines of ordinary or suit' able construction. The objects of our invention are: First, to get rid of the noise which arises from the spool bein g j erked back and forth against the spool-pin in the operation of sewing. Second, to overcome liability of the thread falling over the end of the spool and gettin g wound around the spool-pin, in which case the tension is entirelyT too great-generally so great thatthe thread in 'the end is broken.

To enable those skilled in the art to understand and use our invention, we will proceed to describe the manner in which the same is or may be carried into effect by reference to the accompanying drawing, in which- Figure 1 is a side elevation of so much of a sewing-machine as is needed to illustrate our inven tion. Fig. 2 is an isometric perspective view of that portion of a machine in which our invention is embraced. Fig. 3 is a `top view of the parts shown in Fig. l. Fig. 4 is an end view of the upper part ofthe holder or bracket for the spoolpin. Fig. 5 represents a longitudinal section of the spool-pin or spool-holding disk or plate.

The machine represented in the drawing for the purpose of illustrating the manner in which. our invention may be carried into effect is a Willcox 8v Gribbs7 machine.

E is the frame, and F the needle-beam which vibrates upon the stud or pivot Gr. At the rear of the frame is the spool-holder, consisting of the spool-pin A and the disk or plate B, formed upon or attached to the front end of the pin. The other end of the pin is intended to be itted and held in the arm or bracket C, which is fastened to the frame E. By reference to Fig. 5 it will be seen that the end of the pin inserted in the holding-bracket is turned down so as to form a shoulder, I, to limit the extent to which the pin may be inserted in the socket in the arm C--the design being to have the pin long enough between the shoulder l and the disk B to receive the largest spools used in connection with such machines. The pin can be readily fitted in or withdrawn from the holder C, and we prefer, in order to exert a spring pressure upon it which, While serving to it firmly in place, will, at the `same time, permit its ready withdrawal and replacement `to split `longitudinally the upper end of the holding-arm (l by a sawcut through the pin-socket, as indicated at H, so as'to form two springjaws which will grasp tightly the end of the pin inserted between them. The end, however, may be held by any other suitable 'means which will allow it to be readily removed. The .thread pull-ofi*l is represented as consisting ofthe hooks a b, attached to the vibratory needle-beam, and the intermediate pin o, attached to the frame E, with its outer end fitting a curved slot in the needle-beam.

We arrange the spool-holder so that the pin shall be in line, or nearly so, with the pull-off, or, in other words, so that itsaxis, il' prolonged,

would meet or pass through the thread-receiving eye ofthe pull-od', or nearly so, the object of this arrangement being to allow the thread to be drawn olf equally well from any part of the disk B without' any jerking' or uneven motion. "We also arf range it so that the spool on the pin will always rest by its gravity against the disk B. This arrangement ofthe spool-holder is fully represen ted in Figs. l, 2, and 3 of the'drawing, the spool-pin being set atan angle `with ythe frame both vertically and horizontally, its rear end being inclined upward and outward, so that not only is it brought in line with the pull-oit' but it is also tilted or inclined in such manner that the spool it carries will always rest by its gravity against the disk B. The lateral inclination of the pin to the frame is, however, incidental to its arrangement, in the present instance, on one side of the machine. spool-pin, all that is necessary is that the end to which the spool-holding diskor plate is applied Whatever may be the location of the contact with the plate.

` should point or be inclined toward the pull-off. or

toward any other thread-receiving eye or pin to which the thread is conducted from the spool, so that the thread may be drawn over the edge of 'the plate or disk. The thread from the spool is,

by the action of the pull-off, uncoiled and drawn over the edge of the circular plate or disk B. Owing to the fact that the pin is inclined toward the receiving-eye of the pull-off, the latter is, at

all times, practically equidistant from all parts of the circumference of the disk, so that the thread is drawn evenly and without jerking and, more- Y over, as the disk is greater in diameter than the spool, the thread is lifted and uncoiled from the latter with the greatest ease and facility, and,

lunless v.it be underwound, without causing the We provide devices forms no part of this patent and requires no detailed description. Any suitable pull-off, take-up, and tension may be used, the same being combined withthe frame of the machine in any appropriate manner.

The manner in which the spool-holder is used and operated is as follows: The detachable spoolholder A B is removed from the'machine and a spool of thread, K, is slipped upon the pin, over which it should pass freely. The end of the pin -is then replaced in the holder C. vThe thread is drawn from the spool over the edge of the disk B'into the pull-off, passing underA the movable hook a, overthe intermediate stationary pin c, and under the hook b; thence back and around the tension D, between its intermittently-clamping surfaces; thence lthrough the thread-eye or pin L to the take-up P and thence to the stitch-forming mechanism. The path of the thread is'plainly indicated in Fig. 2. When the needle-beam F,

to which the two movable pins or hooks of the pull-oif are fastened, begins to descend, the clamping surfaces of the tension D close upon the thread and hold it firmly, and, as the needle-beam continues to descend, the thread is bent over the stationary pin of the pull-off and drawn from the spool over the edge of the disk D by merely uncoilin g, and without drawing or putting in motion the-spool K, except when the thread is underwound, in which case the spool, being free to move on the pin, can be drawn around. The spool rests on the pin A in a position but very slightly inclined-in fact, very nearly horizon tal-and there is no tendency of the thread to drop over the end which rests against the disk B, especially as the flange of the disk overhangs the spool, and the thread, in pulling off, is inclined toward the center of the spool when it uncoils from the end 'nearestthe disk. As the pull of the thread is always toward the disk end, there is no tendency of the thread to fall over the opposite end of the spool, and as the spool' is rarely, if ever, jerked around, which, on the contrary, is always taking place in sewingmachines like the Wheeler 8v Wilson machines, which employ the ordinary horizontal spool-pin, perfect security against winding around the spoolpin is insured.

Having described our invention and the manner inwhich the same is or may be carried into effect, what we claim, and desire to secure by Letters Patent, isi A l. The spool-pin or spindle, so arranged that its axis shall be in line with or inclined toward the thread-receiving eye, as described, in combination with a disk or other device for holding the spool thereon, substantially as and for the purposes' set forth.

2. The inclined spool-pin arranged as specified in the preceding clause, in combination with a bracket or other suitable holder, in which the pin vis held at one end, substantially in the manner a spool-holding plate or disk provided withan` Vannular ange, arranged, substantially as described, to overhang the end of the4 spool in contact with the disk and prevent the thread from winding upon the spool-pin.

5. The combination, with the herein-described spool-holding device, of a tension pull-off and take-up, under the arrangement and for operation as shown and set forth. 4

In testimony whereof we have signed ournames to this specification before two subscribing witnesses.

CEAS. H. WILLGOX.

witnesses: cYnUs oAnLEToN.

Trino. A. TAYLOR, HENRY L. BEssEY.

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