US336554A - Feed motion for sewing or embroidering- machines - Google Patents

Description

(No Model.)

E. CORNB'LY.

FEED MOTION FOR SEWING-'0R EMBROIDBRING MAGHINBS. No. 336,554. Patented Feb. 23A, 1886.

ML TIG-1- umuunmg ihvirn Smarts PATENT OFFICE.

EMIL OORNELY, OF PARIS, FRANCE.

FEED-MOTION FOR SEWING ORENIBROIDERiNG MACHINES.

SPECIFICATION forming part of Letters Patent No. 336,55@- dated February 23, 1886.

Application led August 17, 1895. Serial No. 174,617. (No modi-l.)

To all whom, it may concern,.-

Be it known that I, EMIL OORNELY, of Vashington, District of Columbia, a resident of Paris, in the Republic of France, have invented anew and useful Improvement in- Universal Feed- Motions of Sewing or Enr broidering Macliims, which is fully set forth in the following specification.

The feed-motion ordinarily employed heretofore in universal-feed machines consists in an upper feedbar, which presses the cloth upon the cloth-plate, while the horizontal inotion of its feed takes place. That kind of feed is sufficiently perfect for the ordinary purposes of embroidering work on a single cloth; but in certain cases the friction ofthe cloth upon the cloth-plate causes great inconveniences, which prevent the proper working of the machine. Thus, for instance, when two layers of cloth are to be worked, or in Working with braid, cord, beads, or with nietallic threads or cords, the vfeed is frequently different in the cloth,which slides on the plate, than in the other material which is worked upon it, and thus the entire work becomes irregular and imperfect. The pressure, also, of the.feedsnrfuce upon the cloth must be a very considerable one to produce a sliding feed, and thus delicate and fragile materialsuch as velvet or beads-are frequently spoiled by passing through the machine. y

Toovercome these difficulties I have invented a feed in which two feed-surfaces-onc above and one below thecloth--act simultaneously on both sides of the cloth, and can feed the material in anydirection as is required in universal einbroidering and sewing machines. A feed mechanism of this general nature has been heretofore devised for use in a quiltingmachine in which a lower plate is connected with rods which operate the feed-bar, so that the lower plate partakes of all the lateral motions of the feed-bar. This construction or mode of operating the under feed-surface is not, however, available for, or at least not Well adapted to, ordinary sewing and embroidering machines, or for the well-known Bonnaz77 machine.

The present invention consists in the combination, with the upper feed-surface of the universal-feed sewing-machine, o-fa lower feed surface or plate movable in all directions, to follow the motion of the upper feedsurface by its pressure thereon, and suitable means-a spring, for example-for returning the lower feed surface or plate to a central position when relieved of pressure. The necessity of a mechanical connection (which in ordinary machines would have to be made in a circuitous manner through the goose-neck or arm) for communicating the lateral motions from the universal feed-bar to the lower feed-sur-` face is thus avoided.

The invention also consists in the combination, with the upper feed-surface of a un1- versal-feed sewing-machine and the mechan` ism for controlling the direction of the feed thereof, of a lower feed surface or plate connected with the controlling mechanism independently of upperfeedbar, and the mechanism for in'iparting lateral motion to the same. The necessary agreement in direction of movement of the tw'o feed-surfaces is thus secured by their connection with each other through the controlling mechanism, which extends or may extend from under the work-plate through the goose-neck, as in the Bonnaz machine. It will be Vobserved that this mechanism does not convey the lateral motions of one feedsurface to the other, like the connection in the quilting-machine referred to, but determines simply an agreement in direction of the. feedmotions. Other means are used to give motion to the under feed surface, the latter, preferably, being carried with the upper feedsurface by its pressure thereon and returned by a spring.

The invention further comprises cert-ain special constructions and combinations of parts, as hereinafter set forth.

In the drawings, Figure 1 represents a vertical section through the mechanism of said feed-motion. Fig. 2 represents a horizontal View, and Figs. 3 and 4 cross-sections of a part of the mechanism shown in Fig. 1, the feed'surfaces in Fig. 4 being moreover slightly different from what is represented in Figs. 1 and 2.

A represents the feed-bar and the feed-surface of a luniversal embroidering-machine; B, the clothplate; C, the oscillating looper, which turns within the casting D, and which IOC Yis operated in the well-known manner byY means of the screw-gear from rod L. The hub a of a toothed wheel, E, is sunk into the casting D, and can turn thereinfreely. Aplate, b, is adjusted within the crown of the wheel E, so that it can slide horizontally within slideways p. (Represented in Figs. 2, 3, and 4.) This plate b constitutes the lower feed-surface, which, as well as the upper feed-surface, A, may eitherbe covered with india-rubber, Figs. 1, 2, and 3, or it may be provided with teeth, Fig. 4L. The plate bis secured to a small truck, which is provided with rollers or wheels d, which can roll on the bottom of the cavity of wheel E. When the feed-bar A is pressed downward, it will strike the feed-surface 0f plate b, and will carry it along in its horizontal feed-motion, and as the cloth is thus held between the two leedsurfaces A and b they act simultaneously upon it like the jaws of a pair of pliers, and they draw the cloth along in the direction of the feed without causing any friction thereon, and the pressure of the feed-surfaces on the material can be much less than the one employed heretofore.

The crank-handle G, which is used in these kinds of machines for guiding the universal feed and the other organs of the machine in the well-known manner, is also employed for guiding the lower feed-surface, b. Th is is done by means of the pinions M N O, rod L, nut m, sleeve P, pinions H I, and wheels K E, whereby the latter is turned in conformity with the direction of the upper feed-suri'ace, A; but as the lower feed-surface, b, slides within the ways p in the wheel E its line of movement will always be identical with that of the upper feed, A, and thus both of them will work together in any directiomaccording to the one indicated by crank G. When the upper feed, A, rises, the lower feed becomes free and returns to its former position by the pressure of one of the springs g, and it is thus ready for the neXt operation.

In the center ofthe lower feed-surface, I), is a hollow space, into which extends the needie-plate h, into which descends the needle and upon which the nipple of the machine strikes. VThis needle-plate has the shape shown in Fig. 3, and it is secured within the hollow part of the wheel E.

It is evident that the construction of the lower feed-plate, b, can be much modified. It may move within the slides p of the wheel E without employing the friction-rollers d, or it may be attached to said wheel by means of hinges, or it may be secured to a universal joint, by means of which it can follow the movement of the upper feed, A, wit-hout employing the wheel E, which in this case could be entirely dispensed with. I therefore do not limit my invention to the construction herein described.

I claiml. In combination with the upper feed-sur face of a universal-feed sewing or embroidering machine, a lower feed plate or surface movable in all directions to follow the motion of the upper feed-surface by its pressure thereon, and means-such as a spring-fo11 returning the lower feed-surfacel to a central position, no matter in what direction it may have been moved, substantially as described.

2. In combination with the upper feed-surface and feed-controlling mechanism of a universal-feed sewing or embroidering ma chine, the wheel connected with said control# ling mechanism, and the lower feed plate or surface guided by said wheel, substantially as described.

3. The combination, with the mechanism for controlling the direction of the feed-motion in a universal-feed sewing-machine, of the upper and lower universal-feeding surfaces connected with said controlling mechanism independently of each other, substantially as described.

4.. The combination, with the needle-plate of the shape shown, of the lower movable feeding-surface having a space in the middle into which the upper part of the needle-plate extends, substantially as described.

In testimony whereof I have signed this specilication in the presence of two subscribing witnesses.

E. CORNELY.

Vitnesses:

Roer. M. Hoornn, DAVID T. S. FULLER.

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