US2017949A

US2017949A - Loom stoppage recorder

Info

Publication number: US2017949A
Application number: US754493A
Authority: US
Inventors: Cobb F Gordon
Original assignee: Draper Corp
Current assignee: Draper Corp
Priority date: 1934-11-23
Filing date: 1934-11-23
Publication date: 1935-10-22
Anticipated expiration: 1952-10-22

Description

06!. 22 1935, 1 3 CQBE ,0157,49'

LOOM S TOPPAGE RECORDER Filed Nov. 25, 1934 2 Sheets-Sheet 2 .JNVENTOR. W/T/VESS F GORDON c055,

Q/NRWJLCOIBUEN, W i Z ATTORNEY.

Patented Oct. 22, 1935 UNITED STATES PATENT OFFICE LOOM STOPPAGE RECORDER F. Gordon Cobb, Charlotte, N. 0., assignor to Draper Corporation, Hopedale, Mass., a corporation of Maine The present invention pertains to looms and more particularly to the types thereof having warp or warp and filling stop motions.

Looms of the type mentioned are provided with k. 5 devices operated from the stop motions for automatically manipulating the loom controls, and thereby stopping the loom, upon breakage or absence of a warp or filling thread. A knowledge of the number of loom stops from thread breakage and of the proportion of such stops occasioned by warp breakage or filling breakage is of considerable value. Such information is of particular value in making comparative tests of new loom parts or attachments, in checking the qualities of warps and filling, and in detecting and tracing defective loom operation.

Heretofore, the only means of obtaining information concerning total loom stops from warp and filling breakage has been the conducting of loom-stoppage-tests, so-called, wherein each stop, and the cause thereof, is manually recorded. Such tests are laborious and expensive, and accordingly are but infrequently conducted.

The present invention-seeks to provide, in a 100m having a warp stop motion and a filling stop motion, register means for automatically and separately registering total loom stops from the respective stop motions.

A further object of the invention is to provide, in a loom having a register and a warp stop motion, operating means for the register which shall cause the latter to register only actual loom stops from the warp stop motion, thus preventing the registering of false indications which do not result in loom stoppage and stoppage from other sources than the warp stop motion.

Other objects will be hereinafter more specifically enumerated, or will become obvious as the description proceeds.

The preferred embodiment of the invention is illustrated on the accompanying drawings, of which:

Fig. 1 is a view, partly in section and partly in side elevation, of the loom;

Fig. 2 is a detail in front elevation of the register means;

Fig. 3 is a fragmentary plan view of the warp stop motion and register operating means, and

Fig. 4 is a front elevation of the same.

The loom shown on the drawings includes a frame of which a loom side I, the breast beam 2 and arch 3 are shown. Power is applied to the main or crank shaft 4 which reciprocates the lay 5 by means of pitmen 6. The crank shaft also drives the various other loom mechanisms which are not shown, they being of any usual construction andforming no part of the present invention.

The source of power and the controls therefor are likewise not shown, except that of such controls there is shown a conventional shipper han- 5 die I. The shipper handle will be recognized as of the conventional type which moves widthwise of the loom (toward the observer, Fig. 1) to cause the loom to stop. The other parts of the loom controlling means may be of any of the now well known constructions.

The loom is adapted to be stopped automatically upon breakage or exhaustion of the filling thread, and to this end may be provided with any conventional filling stop motion. There is shown, Fig. 1, a movable finger 8 fixed to stop rod 9 which will be recognized as being parts of the usual side filling fork mechanism. The manner in which these parts operate to cause movement of the shipper handle to stopping position is too familiar to require discussion.

The loom is also equipped with a warp stop motion adapted to actuate the loom controlling means so as to cause the shipper handle thereof to move to loom stopping position. The particular form of warp stop motion shown has end brackets, as H), which are mounted on the loom frame and are connected by warp supporting bars II, II. Drop wires l2, l2 are supported by the warp threads (not shown). When a warp thread breaks the respective wire drops down so as to intercept and stop the oscillating bar 13. This bar is mounted on oscillating shaft It so that the bar normally moves forwardly and rearwardly of the loom but is capable of being arrested by a fallen drop wire I2. Stoppage of the oscillating bar causes actuation of the loom controls in the usual manner.

The invention provides register means for separately registering total loom stops from the warp stop motion and from the filling stop motion. As herein shown, the register means may be comprised of separate registers l5 and I6 which are fixed to the loom frame as by being positioned side by side on a plate H on the loom archf When the registers are so positioned they are out of the way of other operating parts and are still so located as to be most readily examined whenever it is so desired.

The register I5 is adapted to register total loom stops from the filling stop motion. To this end, connections from the filling stop motion to the register serve to operate the latter each time the former operates. The specific embodiment shown includes a Bowden wire 18 having one end supported by a bracket [9 on the front of the loom so that the plunger is directly beneath a finger 2| which is fixed to the arm 8. This arm moves forwardly (toward the right, Fig. 1) each time the filling stop motion operates, and thereby depresses the plunger 2!). The other end of the Bowden wire is supported on the plate I! and the plunger 22 is bent laterally to pass through an aperture in the operating arm 23 of the register.

The register I6 is adapted to register total loom stops from the warp stop motion. The problem of so operating the register is complicated by the fact that warp stop motions frequently give false indications (as from a temporarily slackened warp thread) which may not result in loom stoppage or may indicate on several successive picks before stoppage actually occurs. This requires that provision be made for preventing operation of the register unless stoppage actually occurs. The present invention provides register operating means which is operable only when the loom control means is actually actuated from the warp stop motion. In other words, operation of the register is made to depend upon coactuation of the warp stop motion and the loom controls. The preferred means for accomplishing such result will now be described.

A bracket 24, supported from the loom frame, carries a structure including a front plate 25 and an end plate 26. A rod 21 is slidably mounted in the end plate and has its inner end bent to bear in and project through a slot 28 in the front plate. A lever 29 is pivoted on the thus bent end of the rod, the lever being oscillatable on the rod and also bodily movable therewith. The lever is oscillated on its pivot by an arm 30 which is connected with the lever by means of a link 3|. Thus, the lever is oscillated so long as the warp stop motion rod oscillates and stops when the rod is stopped.

The lever 29, and rod 21, are connected so as to be moved endwise (i. e. widthwise of the loom) as the shipper handle is moved. To this end, a shaft 32 extends along one side of the loom and is supported for oscillation about its own axis. The forward end of the shaft is provided with an upwardly extending arm 33 which is connected with the shipper handle. The rearward end of the shaft is bent upwardly to form an arm 34 which is looped to engage about the rod 2! between two collars thereon. It will be apparent that the rod 21 will be moved endwise as the shipper handle is moved on and off, the rod being moved toward the left, Figs. 3 and 4, as the shipper handle moves to its off position.

The necessary power for operating the register is derived from a regularly moving part, such as part 35 which is fixed to the pitmen 6. This part is capable of striking the hinged end 36 of the lever 29 at the proper time, thereby operating the exposed plunger 31 of a Bowden wire 38. This Bowden wire is connected to operate the register l6 and to this end its upper plunger 39 is bent to engage in an aperture in the operating arm 40 of the register. It will be apparent that the register will be operated each time the part 35 strikes the plate 36.

During the normal operation of the loom. the rod 21 and lever 29 are moved inwardly of the loom from the full-line position of Figs. 3 and 4 to the dot-and-dash-line position of Fig. 4. The hinged end 35 is then inwardly from the part 35 and cannot be struck thereby even if the oscillating rod I4 is stopped so that the lever is in horizontal position.

Movement of the shipper handle to loom stopping position results in the rod 21 and lever 29 being moved bodily outwardly of the loom. Such movement places the hinged end 36 so that, at times, it is in the path of the part 35. However. the parts are so timed that if the rod H is free to oscillate it oscillates the lever out of the path of the part 35 as the latter moves rearwardly. Thus, the Bowden wire will not be operated if the shipper handle is actuated from any source other than the warp stop motion.

Should the fallen drop wire l2 stop the bar [3, and thereby the lever 29, and the shipper handle be thereupon moved to loom stopping position, the lever will remain in the path of the part 35. Since the loom turns over at least half a revolution after the shipper handle is moved, the operations just described will result in the part 35 striking the hinged end 36 and thereby operating the register Hi.

It will be apparent that the invention is not limited to the specific embodiment herein disclosed, the true scope of the invention being defined in the appended claims.

I claim:

1. The combination of a loom having a frame, controlling means including a shipper handle, a warp stop motion, a register, and means dependent upon actuation of both said warp stop motion and said controlling means for operating said register.

2. The combination of a loom having a frame which includes an arch, controlling means for said loom, a warp stop motion, a register positioned on said arch, a Bowden wire extending from said warp stop motion to said register for operating the latter, and means dependent upon actuation of both said warp stop motion and said controlling means for operating said Bowden wire.

3. The combination of a loom having a frame which includes an arch, controlling means for said loom, a warp stop motion, a register positioned on said arch and adapted to register total loom stops from said warp stop motion, a Bowden wire extending from said warp stop motion to said register for operating the latter, and means for operating said Bowden wire only upon the actuation of said controlling means from said warp stop motion.

4. The combination of a loom having a frame, manually operable controlling means for said loom, a filling stop motion and a warp stop motion each adapted to actuate said controlling means, a register fixed to said frame, and means for operating said register only upon the actuation of said controlling means from said warp stop motion.

5. The combination of a loom having a frame, controlling means for said loom, a warp stop motion adapted to actuate said controlling means, a register fixed to said frame, connections adapted to operate said register, a regularly moving part, and means operable only upon coactuation of said warp stop motion and said controlling means for causing said part to operate said connections and thereby the register.

6. The combination of a loom having a frame which includes an arch, controlling means for said loom, a warp stop motion adapted to actuate said controlling means, a register positioned on said arch and adapted to register total loom stops from said warp stop motion, a Bowden wire means, a register positioned on said arch and adapted to register total loom stops from said warp stop motion, a Bowden wire connected to operate said register, a regularly moving part, and means operable only upon actuation of said warp stop motion and movement oi said shipper handle for causing said part to operate said Bowden wire and thereby said register.

F. GORDON COBB.