US221639A - Improvement in em broi dering-machines - Google Patents

Description

2 Sheets-Sheet 2i J. C. WELLENS. Embroidering-Machine. No. 221,639.

mg 4Patented Nov.11,l879.

UNITE l IMPROVEMENT IN EMBROIDERING-NIACHINES.

Specification forming part of Letters Patent No. 221,639, dated November l1, 1879; application led March 29, 1878.

To all 'whom it may concern Be it known that I, J ULEs C. WELLnNs, of Philadelphia, Pennsylvania, have invented a new and useful Improvement in Embroidering -Machines, of which the following is a specification.

The object of my invention is to construct simple and effective feeding devices for anl embroidering-machine, an object which I attain in the following manner, reference being had to the accompanying drawings, in which- Figure l, Sheet l, is a front view of my improvementin feeding devices for embroideringmachines; Fig. 2, the same, partly in section 5 Fig. 3, a sectional plan on the line 1 2, Fig. 2; Figs. 4, 5, and 6, diagrams illustrating the operation of the device 5 Fig. 7, Sheet 2, a side view, partly in section, of the machine; and gig. 8, a transverse section on the line 3 4,

A is the front plate of the machine, at the top of which is formed a bearing for a sleeve, a, which surrounds the arm B, carrying the needle or hook cc, the said arm being reciprocated vertically by a crank-pin, w, on the driving-shaft X of the machine through the medium of a bar, B. (See Fig. 8.)

Surrounding the lower end of the sleeve d, and so secured thereto that it can slide vertically, but cannot rotate independently thereoffis a sleeve, D, into the lower end of which is screwed the tube b, which acts as a guard for the hook cc, in the usual manner.

The sleeves aand D are rotated from a suitable shaft, u, under control of the operator, through the medium of bevel-wheels d d', and the vertical reciprocation of the sleeve D is effected by a cam, p, on the drivingshaft through the medium of the bell-crank lever P and spring-bar E, a forked arm, c, on the latter being adapted to a grooved collar, c', on the said sleeve D.

Surrounding the sleeveD is another sleeve, F, to which a vertical reciprocating movement is imparted by a cam, q, on the drivingshaft through the medium of a bellcrank lever, Q, and a spring-bar, G, the latter having a forked arm, f, adapted to a grooved collar, f', on the sleeve. The said sleeve can also be raised and lowered, when desired, in the same manner as an ordinary presser-foot, by means of a cam-lever, g, hung to the plate A, and acting on the lower end of the bar G.

The sleeve F is hung to the sleeve D, so as to rotate with, but reciprocate independently of, the same 5 and to aring, I, which embraces the said sleeve F, is hung a lever, J, the lower or long arm of which carries the serrated feedring lL', while its upper or short arm is provided witli a ring, m, which embraces the sleeve F, but is somewhat greater in diameter than the same, so as to permit a limited vibrating movement of the lever J, the latter being effected by means of a cam, t, on the sleeve D, a spring, s, on the ring I tending to keep the inner edge of the lever J pressed against this cam.

The operation of the device is as follows: As soon as the hook cc has drawn its loop of thread up into the guard b, the sleeve D and guard b are elevated, as shown in Fig. 4, so that the cam t acts on the lever J and vibrates the same, causing the ring i to carry forward the cloth or other material over the bed-plate y of the machine. The sleeve F, and consequently the lever J and ring c', are noW lraised slightly, so that the under face of the ring is clear of the material, as shown in Fig, 5, and the sleeve D and guard b then descend, so that the cam t permits a forward vibration ofthe lever J and forward movement of the ring c', as shown in Fig. 6. The sleeve F then descends, so as to permit the ring t' to rest on the cloth, and the hook :c descends, catches a fresh loop of thread, and rises, as before, prior to a repetition of the above-described movements.

'Ihe ring m serves as a stop to prevent excessive vibration of the lever J and ring c".

As the sleeve F, which carries the lever J rotates with the sleeve D, it will be evident that the direction of the feed is governed by simply turning the said sleeve D.

' I claim as my invention- 1. The combination of the hook the sleeve D, having a cam, t, the sleeve F, having a In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JULES C. WELLENS.

Witnesses:

HARRY A. CRAWFORD, HARRY SMITH.

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