US402354A - schmiek - Google Patents

Description

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

F. SGHMIRK. POSITIVE SHUTTLE MOTION FOR LOOMS.

No. 402,354. Patented Apr. 30.1889.

N. PETERS. mwum m w. Wuhlnglon. n. a

(No'ModeiJ 2 Sheets- Sheet 2.

F. 'SGHMIRK. POSITIVE SHUTTLE MOTION FOR LOOMS.

No". 402.354; I Patented Apr. 30 1889.1

N PETERS. Photo-Lithognphm, Wulllngwn, D-,C

UNITED STATES PATENT OFFICE.

FRANZ SCHMIRK, OF GROSSENHAIN, SAXONY, GERMANY.

- POSITIVE SHUTTLE-MOTION FO R LOOMS.

SPECIFICATION forming part of Letters Patent No. 402,354, dated April 30, 1889.

. Application filed May 12, 1888. Serial No. 278,710. (No model.) Patented in Germany November 12, 1886, No.40,573, and May 1,1887, No. 42,749; in England June 24, 1887, No. 9,014, and in Austria-Hungary November 16, 1887, No. 21,050 and To all whom it may concern:

.Be it known that LFRANZ SOHMIRK, a

subject of the King of Saxony, residing'at.

. May 1, 1887; Great Britain, No. 9,014, June 24, 1887, and Austria-Hungary, Nos. 21,050

- and 52,779, November 1.6, 1887,) whereof the following is a specification.

My invention relates to positive shuttlemotions for looms, and the improvements consist in the particular construction of the mechanism for actuating the shuttle and of the shuttle itself. a

On the annexed drawings the said mechanism is represented by Figure 1 in elevation, looking upon the back of the batten. Fig. 2 is a sectional view on lines 1 1 and 2 2 of Fig.

1; Fig. 3, a sectional plan on line 3 3, Fig. 1;

and Fig. 3*, a vertical section through camdisk F. Fig. 4 is an elevation, and Fig. 5 a plan, of one of the grippers by which the shuttle is held and moved. Fig. 6 is an end view of a gripper and portion of mechanism for opening and closing the same, and Fig. 7 a plan of the shuttle. Figs. 8 and 9 are respectively transverse and longitudinal sections of the, shuttle, the latter being taken on line 4 4, Fig. 7, and the former at right angles to said line.

In Figs. 1 and 2, A is the batten, to the respective ends of which are fixed the guides a a, on which slide with their base-plates b" the grippers B B, the said plates 1) having dovetail ledges engaging in like grooves of the guides. As shown by Fig. 4, each gripper consists of the base-plate b as lower jaw, and of the lever I), forming the upper jaw, the latter being acted upon by a spring, h, which tends to keep the gripper open. At its operating end the said upper jaw is provided with teeth 2', adapted to engage with like teeth formed upon the shuttle 0, Figs. 7, 8, and 9, which carries the weft-spool O.

For operating the shuttle the two grippers require to be simultaneously moved from their outer position toward the center of the batten and back again, and, besides, at the moment the grippers are at the end of their inward stroke the one has to close so as to seize the shuttle which has been carried toward it by the opposite gripper, and the latter has to open in order to release the same, the shuttle being thus alternately delivered from one gripper to the other. These motions are brought about by the following mechanisms:

The to-and-fro motion of each gripper is produced by a cam-cylinder, N, and the two levers H and a, the lever H being provided with a finger, c, that projects into the camgroove of the cylinder N, and the lever 11, which is pivoted at u, engaging by means of an elongated eye with the end'of the lever H, while at its upper end it is connected by a short link, a", to the base-plate of the gripper. The two cylinders N are keyed on the ends of a shaft, y.

For causing the grippers to open and close alternately at the proper moment and to remain, respectively, open and closed in the interval, the tail ends of the upper jaws, 6, provided each with a projection or pin, f, preferably fitted with a roller, are acted upon by oscillatory bars d, pivoted at m and 'n. to the batten, and the upper edge and axis of 0scillation thereof are parallel to the lines of motion of the grippers. These bars have each an arm, (1, (see Figs. 2 and 6,) and they are connected, by means of the said arms and of rods 1;, tolthe ends of a lever, 00, having its fulcrum at w. The consequence of this arrangement is that when the left-hand bar (Z is raised, and is thus caused to act from below against the roller on the pin f above it, it will. keep the corresponding gripper closed during its entire stroke as the said roller rolls along thebar. The right-hand bar 61 is meanwhile kept depressed on account of the connection of the bars with each other by the rods '0 and lever 00, so that the right-hand gripper is then maintained open by its spring 71.

The lever 00 -is connected at one end by means of a universal joint-such as a ball and-socket j oint-to a lever, w, pivoted at w,

and engaging with a finger, 10 Fig. 3, in a grooved cam-disk, F, adapted to cause the bars d to be quickly raised and depressed through the medium of the connecting parts. The disk is keyed on a shaft, g, which is connected to the shaft y by the spur-wheels E and D, whereof E is twice as large'as D, thus giving the shaft q one-half the speed of shaft y, so that each gripper will make full strokes with its jaws alternately open and closed, and the disk is so arranged relatively to the cam-cylinders N that the opening and closing of the grippers will take place when they are at the end of their motion toward each other. To the shaft 31 motion is transmitted from the crank-shaft of the loom by suitable gearing. (Not shown in the drawings.)

In the shuttle shown by Figs. 7, 8, and 9 the teeth designed to be engaged by those of the grippers are formed upon plates It", lodged in recesses I of the shuttle, and pressed upward against shoulders 25' by springs the plates 70 being thus adapted to yield and to cause the shuttle to become disengaged from the gripper that holds it' in case an unusual resistance should occur.

In order to increase the containing capacity of the spool, as compared with spools of the ordinary kind, and to allow of an easy winding 06 of the weft thread or wire, especially if the same is thick or stifi, the spool is arranged with its axis vertically in the shuttle. For this purpose the portion of the shuttle containing the gripping-surfaces is provided at the bottom with an arm or carrier, 1), to which is fixed a vertical pin, r,-serving as a pintle for the spool to rotate on. The spool is prevented from accidentally flying oif the pin by means of aplate, s, hinged to the shuttle and acted upon at its rear end, which is square, by a spring, 25, in the manner of a clasp-knife. To the plate 3 is fixed a spring, 0, bearing upon the spool and serving to check its rotation if the same should become excessive. The spool is guarded by a bow, 7L, having a hole for the weftthread to pass through. This arrangement of spool may also be applied to shuttles of other construction and operated by known means.

I claim as my invention 1. In a loom, the combinatiomwith the batten A, of the guides o the grippers B, having each a pivoted jaw, 12, provided with teeth '5 and projection f, mechanism for positively moving the grippers toward and away from each other, the bars at, hinged to the batten and having each an arm, (1, and an edge parallel to the guides (1, adapted to bear against the projections f, and means connected with said arms (1 for oscillating the bars (Z and pressing their edges against the projections f, substantially as set forth.

2. In a loom, the combination, with the batten A, of the guides at, the grippers 13, having each a movable toothed jaw, Z), with projection f, the shaft y, with cam-cylinders N, means of connection between the cylinders N and the grippers, the oscillating bars (Z, shaft q, with cam disk or disks F, means of connection between the disk or disks F and thebars d, and gear-wheels connecting together the shafts y and q, substantially as and for the purpose specified.

3. In a shuttle, the combination, with the body of the shuttle having recesses Z, with shoulders Z, of the toothed gripping-plates k, lodged movably in the said recesses, and springs 70, pressing the plates is against the shoulders Z substantially as and for the purpose set forth.

4. The combination, with the batten A and the shuttle having teeth, of the grippers B, each having a pivoted jaw provided with teeth adapted to engage said shuttle, mechanism for moving said grippers toward and from each other, a cam operating in unison with said mechanism, the pivoted lever 00, operated by said cam, and bars connected to the respective ends of said lever 03 and arranged to engage with and oscillate said pivoted jaws, as set forth.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

FRANZ SCIIMIRK. Witnesses:

LUDWIG FRAMNS, PAUL DRUCKMI'JLLER.

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