US192283A - Improvement in embroidering attachments for sewing-machines - Google Patents

Description

T. M. RICE.

EMBRoIDERING ATTACHMENT FOR SEWING-MACHINES.

Patented rl'unee 19,1877.

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N FETERS, PHOTO-LIYHGGRAPMER, wASmNGTGN. D 2A nrrnn S'rnrns T. MARSHALL RICE, OF KALAMAZOO, MIOHIGN, ASSIGNOR TOTHE- DAYIS SEWING MAOHDTE COMPANY, OF WATERTOWN, NEW YORK.

IMPROVEMENT IN EMBROIDERING ATTACHMEN-TS` FOR SEWING-MACHINES'.

Specication forming part of Letters Patent No. 192,283, dated J une 19, 1877 application filed May 2, 1877.

Asuitable construction, land is characterized principally by the combination, with vibrating' thread-crossing arms, of intermittently-mov ing lingers, which are operated each in succession to enter between and spread apart the'arins, and then to quit the arms for the purpose of allowingthe latter to come together again. inittent, and serves to cross the thread alter` nately in opposite directions along the line ot stitching. It takes place only when the needle is rising or out of the cloth, and has the ei'ect of crossing the two embroidery or surface threads ata point under the needle, so that the stitch formed by the descending needle will secure the two surface-threads to the work at their point of crossing.

The vibrating arms are actuated to movein the one direction by the' intermittently-moving lingers and in the other direction by a spring, which, by its recoil, actuates themas soon as they become disengaged from said fingers.

The means by which the intermittentlymoving lingers are operated consist of a vibrating angle-lever which, by engaging the needle-yoke nut, derives its movement from the rising and falling needle-bar, and carries a spring-pawl that engages a rotary ratchetwheel, to which is made fast the fingers or the disk that carries said fingers.

The nature of my invention and the manner in which the same is or may be carried Vinto eiect will be understood by reference to the accompanying drawing, in which- Figure l is a perspective view of anattach.

This movement of the arms is inter- The several working parts of the attach- `ment are all carried by a frame, A, which is j which is clamped to-the rear plate of' the head by the back bottoni face-plate screw. as indicated in the drawing, where the head, presser,

` feed, and the needle-bar are indicated by dotted lines.

To the base of the frame-A are pivoted, at a, the two embroidering-thread carrying-arms B, each of' which is acounterpart of the other', as seen in Fig. 3. The front end of each arm has thread-eyes b c, through which passes a thread from a spool on a rack on the machine,

in the manner indicated. Each arm has its own thread,and the two threads, after passing to the arms, are carried bachl under the presser and the feed'. The two arms are in different horizontal planes, so that the end ot' lone may move in its vibration past-theend of the other without danger of interference.

The two arms are normally spread apart as to their thread-carrying ends by means of a spring, d, as shown in Fig.'3 In this position their opposite ends B' cross each other slightly. The interior opposite edges of these ends are peculiarly formed. They have outer inclined portions e, which converge toward ceutral portions f, and thence they diverge from one another, as at g. l

The inclines e are to permit the intermittently-movingngers hereinbefore named,each in its turn, to spread apart the ends B', to rest momentarily between the parallel faces f, and thence to pass out from between the ends into the space left by the divergent faces g.

When the needle rises one of the intermittently moving lingers enters between and spreads apart the ends B', and consequently closes up or crosses the thread-carrying ends of the arms. This has the effect of crossing their threads under the needle. The finger from a hub or disk, C', mounted to revolve on a stud, h, projecting from frame A. Fixed to the disk G' is aratchet, D. There are two ratchetteeth to each finger. Mounted on the same stud his the vibratory angle-lever F, whose shorter arm carries a pawl, I, mounted on a pin projecting laterally from the end of said arm, and so located as to engage the ratchet. The pawl is held in engagement with the ratchet by a spring, i, one end of which is attached to the pawl. The other end is first coiled around the stud l1., and is then fixed to frame A. Under this arrangement the spring not only serves to hold the pawl down on the ratchet, butalso serves to pull down the longer arm of the angle-lever. This arm rests upon the needle-yoke nut, and is consequently raised when the needle-bar rises. When, on the other hand, the needle-bar descends, the spring t' causes the longer arm of the lever to move in a corresponding direction. Thus the lever is moved in one direction by the needlebarand in the other direction by the spring. If desired, however, the longer arm of the lever may be slotted or otherwise t'ormed to engage the nut on theA needle-bar, so as to have apositive movement in both directions.

The embroidery or surface threads are taken from spools specially provided. A rack' for such spool is shown in Fig. 5. G G are the two vertical spool-pins, supported by a frame, H, provided with an upright arm, H', by which lthe rack may be secured to the head or other suitable part oi' the sewing-machine.

The two threads pass through a thread yoke or guide, Z, and thence to the thread-crossing fingers.

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

1. The combination of two pivoted threadcarrying arms, formed at one end with cam or inclined surfaces, substantially as described, and intermittently-moving lingers, each of which in turn enters between and spreads apart these cam-like or inclined ends ot' the arms, substantially as and for' the purposes set forth.

2. In an embroidery attachment for sewingmachines, the combination, substantially as set forth, of two horizontally vibratory thread carrying arms, with intermittentlymoving ingers, eacli of which in turn enters between and spreads apart the cam or inclined ends of the arms, and a spring or springs bywhich said arms are returned to their normal position when disengaged from said fingers.

3. The two horizontally-vibratory threadcarrying arms and their spring or springs, in combination with the intermittently-moving fingers and the ratchet, spring-pawl, and lever for actuating said fingers, substantially as set forth.

4. The embroidery attachment for sewingmachines, consisting ot' the two thread-carrying arms and their spring or springsthe intermittently-moving lingers, the ratchet, pawl, and lever, all mounted on and carried by a frame adapted to be attached to the sewingmacbine, and combined and arranged for joint operation, as shown and described. A

In testimony that I claim the foregoing as my own I affix my signature in presence of two witnesses.

T. MARSHALL vRICE.

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