US424997A - Electric stop-motion for warring-machines - Google Patents

Description

(No Model.)

J.-E. PREST. ELEGTRIG STOP MOTION FOR WARPING MACHINES. No. 424,997.

Patented Apr. 8, 1890.

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JOHN E. PREST, OF NORTHBRIDGE, MASSACHUSETTS.

SPECIFICATION forming part of Letters Patent No. 424,997, dated April 8, 1890. Application filed February 20, 1889. Serial No. 300,532. (No model.)

To col/Z whom it may concern.-

Be it known that I, JOHN E. PREST, of N orthbridge, in the county of Worcester, State of Massachusetts, have invented a certain new and usefulImprovement in Electric Stop-Motions for WVarping-Machines, of which the following is a description sufficiently full, clear,

and exact to enable any person skilled in the art or science to which said invention appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in'which Figure l is a diagram and partly sectional view illustrating the position of the conducting-wires, magnet, and adj unctive mechanism; and Fig. 2, an elevation showing the drop-wire bar and a portion of the drivingshaft and belt-shifter, the gears on the shaft being shown in vertical section. I

Like letters and figures of reference indicate corresponding parts in both figures of the drawings.

My invention relates to means for automatically stopping a warping-machine when an end or thread breaks; and it consists in certain novel features, as hereinafter fully set forth and claimed, the object being to produce a simpler, cheaper, and more effect ive device of this character than is now inordinary use and one in which the drop-wires shall be so pivoted and supported as to prevent clogging and imperfect action resulting from accumulations of lint and dust about the pivoted portions thereof.

The nature and operation of the improvement will be readily understood by all con versant with such matters from the following explanation.

In the drawings, A represents the drivingshaft, and B a pulley.

As the main parts of the warpingunachine are of the usual form, it is not deemed essential to illustrate or describe them.

0 istlie drop-wire bar, formed with a longitudinal groove 2' in one side thereof, as shown.

A metallic bar or plate h is disposed in the groove 1' in the wire-bar O. This bar or plate is provided with perforated ears h, through which a pintle-wire it passes, said ears being formed by slotting the bar or plate It. The dropwires f are supported by the metallic bar or plate 71, and are preferably pivoted i11- directly thereto between the ears h by means of the pintle-wire 72 A plate 75, attached to the drop-wire bar 0, partially covers the groove 2' in the side of said bar and holds the bar h in place.

A l1orizontally-arranged metallic rod 12 is secured in standards (Z of the frame-work of the warper in position to be engaged by the drop-wires when they fall. The rod Z) is surrounded by an insulating substance 9 at its ends.

A wheel m is disposed loosely on the shaft A, its hub Z being provided with an annular groove 19, in which the end of the lever q of an ordinary belt-shifter plays. The wheel m is provided on its periphery with broad radially-projecting flanges or teeth 0' and 011 the side opposite its hub with an outwardlyprojecting eceentrically-tapering nose twhich fits into a corresponding socket formed in a collet 12, secured to said shaft. A coiled spring to, disposed on the shaft between a collar 00 and the hub Z, acts expansively to hold the wheel m in engagement with the collet '2).

Pivoted to the frame of the warper is abar e, in such position that one end y thereof may be made to engage the teeth 1 on the wheel on. An ordinary electro-magnet G is disposed above the opposite end 15 of said bar, which forms an armature therefor. A conductingwire F connects said magnet with one pole of an electric battery D, the opposite pole being connected by a wire E with the bar h, to which the drop-wires are pivoted, or with some metallic portion of the machine in contact with said bar. A wire H connects the rod (Z in front of said drop-wires with the magnetG.

In the use of myimprovementthe wheel m, being held in engagement with the fixed collet 1; by the spring to, revolves with the shaft A when the machine is running. Should a thread or end K become accidentally broken, the drop-wiref through which it passes will fall and come in contact with the rod 12, thus closing the circuit in the wires E F II and charging the magnet G. The end 15 of the pivoted bar will be at once attracted to the magnetandthe end y thereof thrown down into engagement with a tooth 0" on the Wheel m, at once checking the same. Said. wheel being geared into the collet o by the eccentric nose t is forced outward by said collet as it contin ues to revolve and carries with it the lever qof the belt-shipper,which is of the ordinary construction, and slips the (lriving'belt onto a loose pulley, thereby stopping the machine in a manner which will be readily understood withouta more explicit description. As soon as the drop-wire f is lifted from the red I) the circuit is broken and the pivoted bar will fall away from the magnet, thus releasing the wheel on, the end 15 of said bar being eonstrueted sufficiently heavy to accomplish this. The spring 10 returns the wheel on into en gagement with the collet U as soon as the mechanism is stopped, in position to be again operated when a thread breaks. .The teeth r on the wheel m are of such width that they will not disengage from the rod as said wheel slips outward on the shaft. By pivoting the drop-wires to a bar or plate placed within a groove formed in the side of the bar 0 the pivotal portions of the drop-wires are completely shielded, and it is practically impossible for the drop-wires to become clogged at such portions by accumulations of dirt and lint.

I do not herein separately claim the supportingbar formed with the longitudinal groove in the side thereof, in combination with the slotted plate placed in such groove and having the drop-wires pivoted thereto, inasmuch as such combination is claimed by me in my Letters Patent, No. -l()2,278, granted April 30, 1889, upon the application filed by me September 17, 1888.

Having thus explained my invention, what I claim is- 1. The combination of a horizontal dropwire bar provided with a longitudinal groove in one side thereof, a metallic bar disposed in said groove, a series of drop-wires pivoted to said metallic bar and provided with threadeyes, a horizontal metallic rod disposed adjajent to the drop-wires, against which any of said wires fall when released by the breaking of a thread, an electric circuit having one pole connected with said bar and the other pole connected with said rod, an electro-magnet, an armature for said electro-magnet, and a stop mechanism actuated by said armature when the circuit is closed by the dropping of one of the drop'wi res.

i. The combination of a warping-machine frame, a horizontal drop-wire bar supported in said frame and provided with a longitudinal groove in one side thereof, a metallic bar supported in the groove in the drop-wire bar, a series of drop-wires pivoted to said metallic bar and provided with thread-eyes, a source of electricity, a wire connecting said source with said horizontal metallic bar, an eleetrt magnet a wire connecting said magnet with the source of electricity, an armature for said magnet, a stop mechanism actuated by said armature, a horizontal metallic rod supported in said frame and insulated therefrom, said rod being disposed adjacent to said bar, whereby the drop-wires fall against said rod when released by the breaking of the thread, and a wire connecting said rod with the electro-magnet.

JOHN E. PRIEST.

Witnesses:

0. M. SHAW, K. DURFEE.

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