US417687A - Bridge - Google Patents

Description

" the carrier-arms, and C the shuttle.

UNITED STATES PATENT OFFICE.

SILAS HAMMOND STROVVBRIDGE, vOF CORTLAND, NEW YORK, ASSIGNOR 'TO LYDIA A. STROVBRIDGE, OF SAME PLACE.

POSITIVE SHUTTLE-MOTION FOR Looms.

SPECIFICATION forming part of Letters Patent No. 417,687, dated December 17, 1889. Application filed Ielnuary 18, 1889. Serial No. 300,380. (No model.)

`l'o all whom, it may concern:`

Be it known that I, SILAs HAMMOND STROW- BRIDGE, a citizen of the United States, residing at Cortland, in the county of Cortland and State of New York, have invented certain new and useful Improvements in Positive Shuttle-Motions for Looms, of which the following is a full, clear, and exact description.

My invention relates to positive shuttlemotions for looms for weavingwire-cloth, and the specific improvements relate to certain mechanism whereby the shuttle is carried from one side to the other, and in the details of the construction of the carrier-arms.

The object of the invention is to provide a simple and eifective means for automatically releasing one end of the shuttle at the same instant of time that the other end is engaged by the other arm. This object I attain by the mechanism illustrated in the accompanying drawings, which form a part of this specification, and in which Figure 1 represents a front elevation of a portion of a loom, showing my improvements applied thereto, parts being shown in section. Fig. 2 represents a vertical section of the carrier-arms, their attachments, and the shuttle.`

Similar letters refer to similarparts in both views.

The letter A indicates the beater-bars; B,

A sliding-bar D, having beveled ends D D2, is located underneath the lower beater-arm.

E E are vertical sliding bars, which act as stops against which pins F F, carried by the carrier-arms, strike to release the shuttle from engagement with rst one andthen the other carrier-arm, as will be more fully hereinafter described.

G G( are vertical bars secured to and made a part of the sliding bar D. These bars extend above the carrier-arms in such a manner that a shuttle, as it moves across the width of the loom, will come in contact with the said bars.

Located within each of the carrier-arms are spring-catches H and auxiliary spring-catches H', adapt-ed to engage the shuttle by means of slots or holes K K', made in each end of the shuttle. These catches are provided with lugs h h, having inclined sides, the purpose of which will presently appear. The engaging ends of the catches operate in slots made in the carrier-arms after the usual manner. Also located within the carrier-arms are sliding rodsII, each provided at one end with a rectangular block i, and atthe other end with a wedge-shaped block fi', for the purpose of acting upon the inclined faces of the lugs h 71, 6o to force apart the spring-catches and thereby release the end of the shuttle when the sliding rod is forced backward. Ooiled springs m are located in the rear of the blocks t, the function of which will be hereinafter eX- plained.

The pins F F project outward from the blocks c' through slot-s c in one side of the carrier-arms and engage the vertical bars E E when they are forced upward by the action 7o of the beveled ends of the sliding bar D.

One of the principal features of the invention is the employment of the auxiliary or safety spring-catches, the object of which is to provide against accidents that frequently occur bythe breaking of or the getting out of order of the spring-catches.

The slots K are made longer than the slots K, so that when catch H engages the shoulder of slot K the catch II will have no en- 8o gaging eect with slot K but if catch H should break or become inoperative from any cause the catch II would engage the shoulder of the slot K', and thus insure the safe and continuous operation of the shuttle;

It will be observed that the spring-catches, instead of being located within the carrierarms, may be attached to the outside thereof, the engaging ends working through the usual slots in the arms.

The means for actuating the carrier-arms is not shown; but-any one of the several Wellknown means may be employed-such as, for instance, that shown in the patent granted to Benjamin Northrup, dated August 9, 1887, 95 and numbered 367,838, with the exception that instead of mounting the crank-arms on the actuating-shaft in the manner shown in the drawing of the said patent I mount the said arms one hundred and eighty degrees ico apart on said shaft.

The operation. of the device is as follows Motion being imparted to the actuating mechanism, as the shuttle moves backward from the center ot' the loom toward the right-hand side it engages the vertical bar G', sliding the bar D, the beveled end of which as it moves to one side raises the vertical bar E', the op posite end allowing the bar E to drop below the carrier-arm, as shown in Fig. l of drawings. Then as the carrier-arms move forward toward the center the pin F comes in contact with the raised vertical bar E, holding back the sliding rod I, and as the wedge -shaped block /z'f comes between the lugs 7L h. it forces apart the spring-catches at the moment the opposite end of the shuttle comes in contact with the spring-catch H in the other carrierarm, which is not operated upon at this time by reason of the vertical bar E having been dropped below the carrier-arm, the sliding bar D being only of sufficient length to engage one of the vertical bars E E at a time. The shuttle being thus released by the forcing apart of the spring-catches in one of the carrier-arms is caught by the catch in the other carrier-arm and carried to the other side of the loom, where it operates upon the mechanism in the saine manner as above described, and the operation is repeated. Vhen the sliding rods E E are not engaged by the pins t', the wedge-shaped blocks are held away from the lugs 7L L by the coil-springs m.

Having thus fully described my invention, what I claim as new, and desire 'to secure by Letters Patent, is-

l. The combination of a shuttle, a carrierarm, a spring-catch, a sliding rod carrying a wedge-shaped block adapted to actuate said catch to release the shuttle, and provided with a projecting pin, a sliding bar having an arm in the path of the shuttle and formed with a beveled end, and asliding bar adapted to be moved by said beveled end and be engaged by the projecting pin on said shuttlerod, substantially as specified.

2. rl`he combination of a shuttle, carrierarms, spring-catches, sliding rods provided with wedge-shaped blocks adapted to actnate said catches to release the shuttle, and provided each with a projecting pin, a sliding bar having arms in the path of the shuttle and formed with beveled ends, and sliding bars adapted to be moved by said beveled ends into the paths of the projecting pins on said wedge-shaped blocks, substantially as specified.

3. The combination, with a carrier-arm having its ends adapted for the reception of one end of the shuttle, of a pair of spring-catches secured to said arms .and provided with lugs h h on theiradjaeent sides, one of said catches adapted to serve as a safety-catch in holding and permitting the continued operation of the shuttle in the event of the breakage of the other, a sliding rod carrying a wedgeshaped block adapted to enter between the lugs on the catches to effect the separation of the latter, and means for actuating the sliding rod carrying the wedge-shaped bloclg, substantially as specified.

4. The combination of a shuttle, the carrier-arms B, the spring-catches Il l-l, ,the sliding rods I l', adapted to actuate said catches to release the shuttle, and provided each with a projecting pin F and F', respectively, sliding bar D, carrying arms G G and formed with beveled ends, and sliding bars E E', substantially as specified.

SILAS HAMMOND S'lltO WBRIDGE.

Vitnesscs:

L. T. WHITE, H. W. BEARDSLEY.

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