US3167819A - Coiler head stop motion - Google Patents

Description

Feb. 2, 1965 H. w. BRADBURN comm HEAD STOP MOTION Original Filed April 23, 1962 .N m mm A VR m5 w m w H ATTORNEY United States Patent 3,167,819 CSELER HEAD STOP MQTIGN Howard W. Bradburn, Rte. 4, Marion, N.C. Continuation of application Ser. No. 189,431, Apr. 23, 19132. This application Aug. 6, 1964, er. No. 389,539 2 Claims. (Cl. l .25)

This is a continuation of my copending application SN. 189,431, filed April 23, 1962, entitled Coiler Head Stop Motion and now abandoned.

This invention relates to stop motions for textile machines and has particular application to devices having coiler heads such as carding machines, combers and the like.

Stop motions for coiler heads have formerly been constructed in a number of ways, none of which have succeeded in providing a positive stop mechanism actuated by a faulty strand delivery. Stop motions of the balance type, for example, are often prevented from actuating the other parts of the stop motion by lint accumulations.

Accordingly, it is an important object of the present invention to provide a mechanical stop motion for use with textile machines having coiler heads affording a positive stopping action.

Another object of the invention is to avoid waste from and damage to a carding machine by providing a mechanism for positively disconnecting the dofler and feed roll thereof from its source of power upon the occurrence of a defective sliver.

The construction designed to carry out the invention will be hereinafter described, together with other features thereof.

The invention will be more readily understood from a reading of the following specification and by reference to the accompanying drawing forming a part thereof, Wherein an example of the invention is shown and wherein:

FIGURE 1 is a perspective view illustrating a stop motion constructed in accordance with the present invention operatively mounted upon a carding machine which is shown schematically with parts omitted and parts broken away, and

FIGURE 2 is an enlarged perspective view, taken from the rear of FTGURE 1, illustrating the details of the stop motion mounted upon the coiler head.

The coiler head of the carding machine illustrated has a trumpet for compressing the sliver strand fed thereto from the fiber stock delivered from the doffer cylinder. Mechanism feeding fiber stock to the machine includes the usual feed roll. An arm A supporting the trumpet adjacent one end thereof has a pivotal mounting B intermediate the trumpet and the free end thereof. Resilient means C exerts force upon the arm A urging the trumpet upwardly against the force exerted thereon by the strand, the force exerted by the strand normally maintaining the trumpet in a depressed position as illustrated in FIGURE 1. Linkage means D is carried adjacent the free end of the arm A. Means E stopping the feeding of fiber stock to and from the machine is actuated by the linkage means D when the arm A is pivoted responsive to the resilient means C resulting from a faulty strand.

Referring more particularly to the drawing, the stop motion device is illustrated as being positioned upon the coiler head of a carding machine, the frame of which is illustrated at 11. The coiler mechanism is driven from the shaft 12 which drives the calender rolls 13. The sliver strand 14, from the web 14a delivered by the dot-fer cylinder, is fed over the guide 15 through the trumpet 16 into the coiler head 10 between the rolls 17. The sliver is then delivered through the usual tube (not shown) into the rotating sliver can 13. The rotating sliver can 18 is positioned on the strand 19 which includes a vertical standard 19a. The shaft 12 drives a vertical shaft 20 (through bevel gears not shown) which drives the roll 17 through the bevel gears 21.

The carding machine is illustrated schematically and includes a feed roll 22 for feeding fiber stock into the carding machine. The main cylinder is illustrated at 23 and the usual doifer cylinder is illustrated at 24. The shaft 25 normally drives the feed roll 22 through the doifer cylinder by a shaft and suitable gearing (not shown) as well as the dotfer cylinder through the gear 26. The shaft 25 is driven by the belt 27 and pulley 28. The idler pulley 29 is loosely carried by the shaft 25.

in the embodiment of the invention illustrated, the stop motion mechanism, when actuated by a faulty strand, will move the belt 27 from its driving pulley 28 to the idler pulley 29 thus disconnecting the shaft 25 from its driving means and stopping the input of fiber stock from the feed roll 22 as well as the output of stock from the dofier cylinder 24.

Referring to FIGURE 1, the trumpet 16 is illustrated as being in depressed position, which is its normal position during operation of the machine. Now, with special reference to FTGURE 2, the trumpet 16 is illustrated as being in raised position as would be the case when moved responsive to a faulty strand. The substantially L-shaped arm or tongue A carries the trumpet 16 in one leg 30 thereof while the other leg 31 has a pivotal mounting B carried by the coiler head 10. The pivotal mounting includes a bracket 32 carried by the rear surface of the coiler head 10 and a pin 33 has fixed connection with a bracket 34 which has fixed connection with the inner surface of the leg 31. The pin 33 rotates freely in the bracket 32.

Resilient means C exerts force upon the arm A urging the trumpet upwardly in an attempt to overcome the force exerted thereon by the sliver 14 in normal operation. The resilient means C includes a resilient extension 35 from a coil spring 36 which is suitably anchored to a stub shaft 37. The stub shaft 37 is carried by a bracket 38 which has fixed mounting upon the coiler head 10. The resilient extension 35 bears against the arcuate surface of an abutment 39 carried by the inner surface of the leg 31 above the pivotal mounting B. The member 62 is a stop for limiting movement of the leg 31 when a strand breaks. The member 63 is a pivoted link which may be lodged between the leg 31 and the coiler head 10 to temporarily deactivate the stop motion.

Linkage means D has fixed connection as at 40 through the pin 33 to the arm A. The link 41 has pivotal connection as at 42 with a substantially vertically disposed link 43. Referring again to FIGURE 1, it will be noted that the link 43 has threaded adjustment means 44 by which it is connected to an Lshaped link 45 which has a downwardly projecting leg 45a. The link 45 has a pivotal connection with the standard intermediate its ends as at 46. The lower end of the downturned leg 45a is normally supported upon a link 47 which has a pivotal connection with the standard 19a as at 48. A second vertically disposed link 49 has pivotal connection as at 50 with the free end of the link 47. The link 49 has pivotal connection as at 51 with an offset arm 52 fixedly carried by a rod 53. The rod 53 is mounted for rotation in the bracket 54a carried by the standard 19a on one end and is rotatable within the frame as at 53a on the other end. The rod carries a bifurcated member 54 fixed adjacent the end thereof within which a horizontal rod 55 is carried. The rod 55 has a stop member 56 fixed on the outside of the bifurcated member 54 and projects through a portion 11a of the frame 11. A strong coil spring 57 is compressed between the inside surface of the frame member 11a and a stop member 53 carried by the rod 55.

Means E for moving the belt 27 to the idler pulley 29 thus stopping the feeding of fiber stock includes a yoke member 59 pivotally carried as at 60 by a frame portion 1111. An oifset portion of the yoke member has pivotal connection as at 61 with the rod 55.

It is thus seen that when the sliver becomes excessively light or broken by the trumpet the leg 30 will be raised resulting from the resilient means C turning the arm A about its pivotal mounting B. This results in the lowering of the link 43 causing the leg 45a to release the link 47 for pivotal movement resulting from the turning of the rod 53 clockwise in FIGURE 1, as is its normal tendency due to the inwardly inclined bifurcated member 54 and the action of the coil spring 57 thereon. This makes it possible for the bifurcated member 54 to release the stop member 56, allowing the coil spring 57 to urge the rod 55 inwardly to cause the yoke 59 to pivot about its pivot point to move the belt 27 outwardly to the idler pulley 29. It is evident that this invention has application to other textile machines having a coiler head with a trumpet and feeding means.

While a preferred embodiment of the invention has been described using specific terms, such description is for illustrative purposes only, and it is to be understood that changes and variations may be made without departing from the spirit or scope of the following claims.

What is claimed is:

1. In a textile machine and the like having a coiler head with a trumpet compressing a strand fed thereto by feeding means, the improvement including, an arm supporting the trumpet, a pivotal mounting for said arm carried by the coiler head, first resilient means exerting force upon the arm urging the trumpet upwardly against the force exerted thereon by the strand, the force exerted by the strand normally maintaining the trumpet in a depressed position, depending linkage means carried by the arm urged downwardly by said first resilient means,

second resilient means also normally urging said arm downwardly and released by movement of said linkage means responsive to upward movement of the arm by said first resilient means upon the occurrence of a faulty strand, and mechanical means actuated by said second resilient means when released to deactivate the feeding means to discontinue the feeding of the strand to the trumpet.

2. In a textile machine and the like having a coiler head with a trumpet compressing a strand fed thereto and a feed roll driven by a doifer roll having driving means therefor, the improvement including, an arm supporting the trumpet, a pivotal mounting for said arm carried by the coiler head, first resilient means exerting force upon the arm urging the trumpet upwardly against the force exerted thereon by the strand, the force exerted by the strand normally maintaining the trumpet in a depressed position, depending linkage means carried by the arm urged downwardly by said first resilient means, second resilient means also normally urging said arm downwardly and released by movement of said linkage means responsive to upward movement of the arm by said first resilient means upon the occurrence of a faulty strand, and mechanical means actuated by said second resilient means when released to deactivate the driving means for the doffer roll consequently stopping the feed roll.

References Cited by the Examiner UNITED STATES PATENTS 198,111 12/77 Houghton 19-.25 867,131 9/07 Haselden 226-11 1,727,285 9/ 29 Gallung 19.25

FOREIGN PATENTS 548,923 10/42 Great Britain.

DONALD W. PARKER, Primary Examiner.

Claims (1)

1. IN A TEXTILE MACHINE AND THE LIKE HAVING A COILER HEAD WITH A TRUMPET COMPRESSING A STRAND FED THERETO BY FEEDING MEANS, THE IMPROVEMENT INCLUDING, AN ARM SUPPORTING THE TRUMPET, A PIVOTAL MOUNTING FOR SAID ARM CARRIED BY THE COILER HEAD, FIRST RESILIENT MEANS EXERTING FORCE UPON THE ARM URGING THE TRUMPET UPWARDLY AGAINST THE FORCE EXERTED THEREON BY THE STRAND, THE FORCE EXERTED BY THE STRAND NORMALLY MAINTAINING THE TRUMPET IN A DEPRESSED POSITION, DEPENDING LINKAGE MEANS CARRIED BY THE ARM URGED DOWNWARDLY BY SAID FIRST RESILIENT MEANS,

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