US2444085A - Warp and harness stop motion for looms - Google Patents

Description

June 29, 1948. BABB ET AL WARP AND rumrmss STOP MOTION FOR LOOMS 2 Sheets-Sheet 1 Filed Sept. 24, 1945 WWW" My 2w 5 1 a r 0 Z Z 1 iw/Z m w w a Q, MN

H. H. BABB ET AL WARP AND HARNESS STOP MOTION FOR LOOMS June 29, 1948,

2 Sheets-Sheet 2 Filed Sept. .24, 1945 Patented June 29, 1948 WARP AND HARNESS STOP MOTION FOR LOOMS Harold n; Babb, Spartanburg, and Dwight L.

Moody, Drayton, S. C.

Application September 24, 1945, Serial No. 618,170

3 Claims. 1

This invention relates to a warp and harness stop-motion for looms, and has for one of its objects the production of a simple and eflicient means for automatically tripping the plunger'of the flexible cable to stop the loom should the harness become too low and contact the tripping bar.

A further object of this invention is the production of a simple and eflicient harness contact means for actuating the flexible cable to stop the loom and thereby prevent an inferior grade of cloth from being made in the event that the harness should become too low.

Other objects and advantages of the present invention will appear throughout the following specification and claims.

In the drawings:

Figure 1 is a fragmentary front elevational view of the harness and tripping mechanism;

Figure 2 is a perspective view'of one of the tripping members;

Figure 3 is a transverse sectional view through one of the tripping members, illustrating the manner in which the plunger engages the tripping bar;

Figure 4 is a transverse sectional view through the tripping member illustrating the yielda' supporting means for the tripping bar;

Figure 5 is' a longitudinal sectional view of a modified form of the tripping member, certain parts bein shown in elevation;

Figure 6 is an enlarged side elevational view of the lower supporting end of the tripping member in an upright position;

Figure 7 is a similar view illustrating the tripping member in an adjusted inclined position.

By referring to the drawings, it will be seen that l0 designates the conventional harness of a loom, the harness being suspended by the conventional suspension means II. The loom harness I0 is adapted -to hang close to the tripping'bars l2. of the tripping mechanism A. A separate tripping mechanism A is preferably located near and under each end of the harness l0, as shown. A loom knock-off M of the conventional type con trols the operation of the loom in the conventional manner. While the present invention is particularly adapted for use upon the High speed rayon loom manufactured by Draper Corporation the "present invention may be adapted to other types of looms without departing from the spirit of the invention so long as the adaptation falls within the scope of the appended claims.

Each tripping mechanism is preferably simi- 2 I! which is yieldably supported by expansion springs I3 which fit around depending guide pins I4. The bar 12 is vertically slidable within a longitudinal channel I5 formed in the bridge portion I6 of the tripping mechanism A. The bridge portion I8 is supported by the depending arms H, which arms l1 converge toward their lower ends and merge into a supporting lug l8. A journal pin I9 anchors the 'lug 18 upon a selected location of the loom frame 20 and constitutes a pivotal support 'by passing through the aperture 2!. An adjusting pin 22 by selectively fitting in one of the apertures 23 in the lug l8 and engaging the socket 24 in the frame 20 will hold the tripping member at a selected incline to the horizontal plane of the frame 20 if such a selected inclined position is desired by the operator. The position of the pins l4 may be adjusted by means of a cotter-pin 25 fitting in one of the apertures 26 to regulate the tension of the spring or springs l3 and to adjust the position of the trip bar l2 relative to the harness l0. Each tripping mechanism A is provided with upstanding ends or abutments I! to prevent the harness Hi from falling to the floor when and if the harness breaks.

An actuating plunger 21 operates a flexible rod tube 28 and this tube 28 connects to loom knockoff M, as at 29. The plunger 21 contacts the under face of the bar l2 and is adapted to cause the loom knock-off to stop the loom should the harness l0 become too low and contact the bar ill. The weight of the harness 10 by contacting the bar l2 will immediately depress the plunger 21 which actuates the flexible tube 28 to cause the loomknock-ofi to stop the loom. The casing of the plunger 21 may be adjusted to a suitable contacting position for the plunger and held in such a position by means of a clamping screw 30 which is carried by the depending boss 3 I.

In Figure'5 there is shown a modified form of the invention wherein the tripping mechanism comprising a bridge portion 32 carries a tripping bar 33. This bar 33 is supported by' a plurality of springs 34 which are carried by the guide pins 35, similar to the guide pins H. A plurality of actuating plungers 36 contact the tripping bar 33 and lead to the loom knock-off for stopping the loom. The plungers 36 may be connected in any suitable manner to cause the loom knockoff to stop the loom when either plunger is depressed. Any number of plungers, such as the plungers 36, may be used without departing from the spirit of the invention.

Each loom has a tripping mechanism A placed larly constructed and comprises a tripping bar on one side of the loom, and a second tripping From the foregoing description it should be understood that by means of the harness-actuated tripping mechanism, the loom will be cut ofi if the harness should break or become too low whether or not the warp stop-motion is working.

Having described the invention, what is claimed as new isz' 1. A stop-motion device for use with a loom having a harness, a support, a stop-motion tripping member located below and in close proximity to the harness, said tripping member comprising a bridge portion and means for anchoring the same to said support, said bridge portion having anelongated channel in its upper face, a tripping bar fitting in said channel, means for yieldably supporting said bar in said channel, a flexible rod tube having a plunger engaging the bar for connection with a loom knock-of! to automatically stop the loom when the harness contacts the bar and depresses the bar.

2. A stop-motion device for use with a loom having a harness, a support, a stop-motion tripping member located below and in close proximity t'o-the harness, said tripping member comprising a bridge portion and means for anchoring the same to said support, said bridge. portion having an elongated channel in its upper face, a tripping bar fitting in said channel, means for yieldably supporting said bar in said channel, a plu- 2,444,oee

rality of flexible rod tubes having plungers en gaging said bar for connection with the loom knock-on to automatically stop the loom when the harness contacts the bar and depresses the a bar.

3. A stop-motion device for use with a loom having a harness, a stop motion tripping member located below and in close proximity to the harness, said member having a tripping bar extending transversely of the harness,: said tripping member; comprising a bnidge portion, yieldable means carried by the bridge portion for yieldably REFERENCES crrnn The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,538,625 Davis et a] May 19, 1925 2,199,437 Long et a] May 7, 1940 2,368,427

Sanders Jan. 30, 1945

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