US703471A - Warper stop-motion mechanism. - Google Patents

Description

m. 703,471. Pat ented July I, 19-02."

A. E. RHOAD ES. WARPER STUP MUTlUN MECHANISM.

(Application filed Oct. 7,' 1 901d (No Model.)

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UNITED STATES PATENT ALONZO E. RIIOADES, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, AND PORT- LAND, MAINE.

WARPE R STOP-MOTION MECHANISM.

SPECIFICATION forming part of Letters Patent No. 703,471, dated July 1, 1902.

' Application filed October 7,1901. Serial No. 77,850. (No model.) i

T 0 ct whom, it may concern:

Be it known that I, ALONZO E. RHOADES, a citizen of the United States, residing at Hopedale, in the county of Worcester and State of Massachusetts, have invented an Improvement in Warper Stop-Motion Mechanism, of which the following description,in connection with the accompanying drawings, is a speci-- fication, like characters on the drawings representing like parts.

This invention relates to stop-motion mech-- anism for warpers; and it has more particu larly for its object the production of the novel and effective drop-wire for such mechanism.

The pivotally-mounted'drop-wires of warper stop-motions are usually assembled in groups of three,asin the technically-known Walms ley stop-motion, each drop-wire consisting of a straight shank bent at one'end to form a fulcrum-eye and at its other end bent to form a laterally-oifset warp-eye, the planes of the two eyes being substantially at right angles to each other, the fulcrum-eye being in the path of movement of the shank.

When the drop-wires of a group are mounted on their supporting-block with the shanks closely adjacent, the warp-eyes are liable to overlap, so that in practice a wire which should drop upon breakage of its warp-thread will be held up by the eye of an adjacent wire and the stop-motion will not operate as it should.

By separating the wires of a group late'r-.

ally, so that their warp-eyes cannot overlap,

the trouble will be obviated; but it necessi tates the use of several banks of drop-wires to provide for the necessary number of warpthreads.

will have a broad bearing and will not wear a sharp groove in the eye, as now very frequently occurs.

Figure 1 is a transverse section of a portion of a warper, showing the drop-wires and the cooperating vibrating feelers which control the stopping -1nechanism. Fig. 2 is a front view of a group of three drop-wires embodying my invention mounted in a support, and Fig. 3 is an end view thereof looking at the Warp-eye ends of the drop-wires to show the relative inclination of the warp-eyes.

Referringto Fig. 1, the end frame A, feeler rock-shaft a, provided with arms a a which carry feelers ff, the transverse bars I) b,provided with seats 0 c',respectively,for the drop- -wire blocks CV, and the lockin -bars m m to retain the blocks in their seats may be and are -of usual or well-known construction in warpers, as are the vibrators o o to return a released drop-wire to position.

The blocks (1 usually made of metal, are slotted at 2, Fig. 3, to receive loosely the fulcrum-eyes of the drop-wires, a pin 3 passing through said eyes, andthe blocks are shown of-usnal construction to pivotally support a group of three drop-wires.

In accordance with my invention each dropwire is made of wire, presenting a straight shank d of suitable length bent at one end to form a substantially circular loop or fulcrumeye d, which is inserted in one of the slots 2 of the block and receives the pivot-pin 3.

"lhe other end of the shank is bent to form a preferably-elongated loop or Warp-eye (1 the free end d of the wire being located in the plane of the loop, which plane is oblique or inclined to the plane in which the shank and fulcrum-eye are located, as clearly shown in Fig. 3, the obliquity of the plane of. the warpeye being effected by twisting the latter on its shank. As is most clearly shown in Fig. 3, the warp-eyes are thus prevented from overlapping each other, while a large Warp-eye is presented for the warpthreads w to pass through, and at the same time sufficient lateral freedom of movement of the drop-Wires is maintained. I am also enabled to place the drop-wires quite near each other, obviating the multiplication of banks of drop-wires.

In Fig.1 I have shown one of the drop-wires released in position to engage and arrest the vibrating movement-of its feeler, such arrest of the latter operating the stopping mechanism (not shown) in well-known manner-as, for instance, in United States Patent No. 624,541, granted May 9, 1899.

By reference to Fig. 1 it will be noticed that the upper end or top 30 of the warp-eye is extended at substantially right angles to the shank to present a flattened top, which provides a broad bearing for the thread as it travels through the eye, preventing the Wearing of a sharp groove in the top of the eye. Such grooves are now frequently formed and act to cramp and catch the thread, so that it readily breaks.

Having described my invention, What I claim, and desire to secure by Letters Patent, 1s-

1. As a new article of manufacture, a dropwire comprising a straight shank having a fulcrum-eye at one end and at its opposite end bent to form a broadened warp-eye having a flattened top, to present a broad and fiat bearing for the thread.

2. As a new article of manufacture, a drop- Wire having a straight shank oppositely bent at its ends to constitute warp and fulcrum eyes, the plane of the warp-eye being oblique to the plane of the fulcrum-eye, the top of the warp-eye being flattened to present a broad bearing for the thread.

In testimony whereof I have signed my my name to this specification in the presence of two subscribing witnesses.

ALONZO E. RHOADES.

Witnesses:

GEORGE OTIS DRAPER, ERNEST W. W001).

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