US1394652A - trembley - Google Patents

Description

U. N. TREMBLEY.

TEMPLE THREAD PARTER FOR LOOMS.

APPLIC ATION FILED FEB. 14. 1921.

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U. N. TREMBLEY.

TEMPLE THREAD PARTER FOR LOOMS.

APPLICATION FILED FEB. 14, I921.

1,394,652;- Patented Oat. 25, 1921.

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ULYSSE N. TREMIBLEY, OF SOUTH LAWRENCE, MASSACHUSETTS, ASSIGNOR TO DR CORPORATION, OF HOPEDALE, -MASSACHUSETTS, A CORPORATION OF MAINE,

APER

TEMPLE-THREAD PARTER FOR LOOMS.

Specification of Letters Patent.

Patented Oct. 25, 1921.

7 Application filed February 14, 1921. Serial No. 444,675.

To all w ham it may concern:

Be it known that I, ULYSSE N. TREMBLEY, a subject of the King of Great Britain, and resident of South Lawrence, county of Essex, State of Massachusetts, have invented an Improvement in Temple-Thread ,Parters for Looms, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention, relates to improvements in loom temples which are provided with thread parters and the object thereof is to provide novel means for rendering the thread partingmechanism inoperative during such portion of the time of the operation of, the loom as the function of the thread parteris unnecessary.

In automatic filling replenishing looms a temple is employed which is provided with a thread parter for cutting off, adjacent the selvage of the cloth, the loose ends which are present after transfer of'the bobbin or cop takes place. In the majority of such looms the thread parter works continuously and is thus subject to weartending to render it dull and inefficient. The present invention is designed to provide a novel means for preventing the operation of the thread parter except for a redetermined number of actuations imme iately after transfer takes place so that the life and eflicient operation of the thread parter will be maintained for a long period. a

I am aware that heretofore certain mechanisms have been devised for accomplishing this purpose, such as those disclosed in Patents No. 630,236 Joy August 1, 1899, and Stimpson No. 704,715 July 15, 1902.

The object of the present invention is to provide a novel means which will more effectively lock the thread parter in inoperative position than those heretofore devised.

A further object of the invention is to provide a thread parter for loom temples in which the usual springv for moving the thread cutting blade to openposition will be eliminated thereby preventing the temple thread parter from becoming inoperative by reason of spring breakage.

further object of theinvention is to provide a temple, thread parter-with a detent which is, provided with means tending normallyv to withhold it from looking relation to'the thread parter, and with means operated by successive movements of said thread parter for moving said detent into locking position.

Other objects and features of the invention will more fully appear from the following description and the annexed drawlngs and will be pointed out in the accompanying claims.

preferred embodiment of my invention 1s lllustrated in the annexed drawings in which, r V

Figure l'is a side elevation of a loom temple and thread parter illustrating the preferred form of my invention;

Fig. 2 is a plan view of the same;

Fig. 3 is a rear elevation; and, v

Fig. 4 is a detail vertical sectional view through a portion of the head showing the assembled relations of the thread parter and locking mechanism therefor.

The loom temple which is illustrated in the accompanying drawings may be and is of the usual type comprising a pod 1 provided with a shank 2 which is slidably mounted in a stand 3 adapted to be secured to the breast beam of the loom, the usual spring (not shown) being provided for holding the temple and thread parter in rearward position. The usual heel 4 is secured to or formedintegral with the pod and is adapted to be engaged by'the lay upon each beat-up.

A temple roll or rolls 5 are mounted within the pod in the customary manner. The temple is provided with a cap 6 which is secured to the pod by a bolt 7. In the preferred construction illustrated the cap is provided with a slot 8 in which the stationary cutting blade of the thread parter is secured by a screw 9 or, other suitable fastening.

The thread parter comprises a cutting blade '10 which is pivotally mounted upon a stud 11 and is provided with a forwardly extending arm or actuator 12 which desirably is rearwardly curved and is provided The counterweight desirably may be substantially cylindrical in form so that it will present a relatively broad face for engagement with the lay. By reason of this construction the usual springs which hold the thread parter in open position are eliminated and a construction provided which will not be subjeetto material wear or likelihood of breakage during the operation of the loom.

One of the principal features of the invention is to provide means for locking the thread parter in inoperative position during such portion of the operation of the loom as the function of the thread parter is not required. In the preferred construction illustrated herein a bracket 1 1 is secured to the head or cap 6 by a screw and is desirably provided with a boss 16 underlying and engaging an extension 17 of said cap or head. The bracket 14ldesirably also is provided with a laterally extending boss 18 in which a detent 19 is slidably mounted. The upper face of the detent 19 is provided with a series of teeth 20 which are adapted to be engaged by a pawl and dog which will hereinafter be described.

A lug 21, projecting downwardly from the detent 19 through a slot 22 in the boss 18, is engaged by a spring 23 which is coiled about a stud 241 projecting outwardly from the bracket 14.

Thedetent 19 is so positioned that when it is forced inwardly its end will lie in the path of the actuator 12 and will retain it in inoperative position illustrated in dotted lines in Fig. 1 and prevent the same from oscillation. The spring 23. however, normally tends to force the detent 19 out of locking relation to the actuator 12 into the position illustrated in Figs. 1 2 and 3.

Any suitable mechanism may be employed for forcing the detent into locking position upon a predetermined number of movements of the actuator. In the preferred construction illustrated herein a plunger is reciprocabl y mounted 111,21 suitable way in the tem head. The way may conveniently be f 'med'by grooving the under-face of the extension 17' of the head adjacent the portion which engages the shank 2.

The plunger 25 rests at its lower end upon the actuator and at its upper end engages one arm 26 of, a lever which is pivotally L mounted upon a stud 27 mounted in the bifurcatedupper end 28 of the bracket 14%. The other arm 29 of said lever is bifurcated at its end and connected by a stud 30 to one end of ailin-k 31, the other end of which is pivotal'ly connected to a stud 32 in one arm of a bell crank lever 33 which is fulcrumed upon a stud34= carried by a bifurcated lug 35 extending laterally from the bracket 14. The other'arm of the bell crank lever 33 is pivotally connected by a stud 36 to a pawl 37 having a tooth 3S engaging the teeth 29 of the rack 19. The pawl 37 desirably is provided with an upwardly extending web, 39 having at its upper end. laterally extending flanges 4-0 which overlie a locking pawl for the rack for apurpose hereinafter to be described.

The bell crank lever 33 desirably is provided near its fulcrum 341 with an extension 41 which is engaged by one end of a spring 42, the other end of which abuts against the bracket 11- and tends to force the pawl 37 outwardly. It is obvious, therefore, that the 'velztical swinging movement of the actuator will act through the plunger 25 to oscillate the lever arm'26 thereby causingthe opposite arm of the lever. acting through the link 31. to oscillate the bell crank lever 33 thereby forcing the pawl. 37", which engages theteeth 20 of the rack 19. forward and'advancing the rack step by step.

, In order to lock the rack against reverse movement a dog 43 is provided having a toothed end which engages the rack. The dog 13 is provided with arms 1 1 which are pivotally mounted upon studs 45in ears 445 which extend upwardly from the boss 18, the pawl 87 reciprocatingbetween said arms 1 1. The flanges 10 upon the pawl 37 overlie the arms 1 1 sothat when the dog 13is'raised, the arms 41 1- will engage said flanges and raise the pawl 37 out of engagement with the teeth20 of the rack 19. By thus disengaging the dog 13. and the tooth 38 of the pawl 37 from the rack'20, the detent may be quickly released under the pressure of the spring 23 so that it will'be at once withdrawn from locking engagement. Such release desirably is accomplished at the time transfer takes place and means are, therefore, provided for releasing the dog and pawl from some movable part of the loom which operatesv in conjunction with the transferring mechanism.

as illustrated herein the dog 48 is provided with a laterally extending rod or stem 17' which lies in the path of a bar 418 which is connected to. andoperated by the'controller of the loom. The mechanism is so arranged that when transfer is called for, and the controller rod actuated to position the transferring mechanism, the'bar 48 will be forced upwardly against the rod or stem 17 raising it sufiiciently first to disengage the dog 18 and upon'further movement to cause the arms 44; of'the dog to. engage the flanges410 upon the pawl 37. Further upward "movement of the dog will, therefore, cause the pawl to be released from its engagement with the rack 20 so that the spring 28' may force the'detent from locking position thereby freeing the actuator and permitting thecounterweighted end of the same to drop into a position in which it will be engaged by the lay upon beat-up.

As this action occurs just before transfer is effected the thread parter will begin its cutting movements at or before the transfer of the new bobbin of the shuttle is effected and will continue such cutting movements for a predetermined number of beat-ups of the lay corresponding to the number of teeth in the rack of the detent. During the suc cessive beat-ups the rack bar will, of course, be forced forward by the pawl 37 and will be retained at each step of advancement by the dog 43. When the detent 19 shall have advanced so that its end projects in the path of the actuator it will engage and hold the actuator out of operative position relatively to the lay until transfer is again called for. Thus the thread parter will be inoperative during a greater part of the operation of the loom and its wear will be correspondingly decreased.

It will be understood that the embodiment of the invention disclosed herein is illustrative in character and is not restrictive and that various modifications in form, construction and arrangement of parts may be made within the spirit and scope of the following claims. v

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is:

1. A loom temple provided with a thread part-er, a detent operable to lock said thread parter in inoperative position, means tending normally to withhold said detent from locking position, means operable upon a predetermined number of movements of said thread parter to force and to hold said detent in locking position and means for releasing said detent.

2. A loom temple provided with a thread parter, a slidably mounted detent operable to lock said thread parter in inoperative position, a spring tending normally to withhold said detent from looking position,

means operable upon a predetermined num ber of movements of said thread parter to force said detent into and to hold the same in looking position and means for releasing said detent.

3. A loom temple provided with a thread parter, a detent movable into the path of said thread parter, resilient means tending normally to withdraw said detent from the path of said thread parter, means operable by a predetermined number of movements of said thread parter to advance said detent into the path of said thread parter, means for retaining said detent in looking position and means for releasing said detent.

' a. A loom temple provided with a thread parter, a slidably mounted detent operable to lock said thread parter in inoperative position, means tending normally to withhold said detent from looking position, pawl and ratchet mechanism operable by successive movements of said thread parter to advance said detent to locking position and means for releasing said detent.

5. A loom temple provided with a pivotally mounted thread parter having a cutting blade and an actuating arm, a detent movable into the path of said actuating arm, a plunger engaging said thread parter, pawl and ratchet mechanism operable by the movements of said plunger to position and hold said detent in the path of said actuating arm and means for withdrawing said detent from looking position.

6. A loom temple provided with a pivotally mounted thread parter having a cutting blade and an actuating arm, a detent movable into locking relation to said actuating arm, means acting normally to withhold said detent from looking position, a rack on said detent, a pawl engaging said rack, means operable by successive swinging movements of said thread parter to actuate said pawl, a dog engaging said rack and means for releasing said dog and pawl.

7. A loom temple provided with a pivotally mounted thread parter having a cutting blade and an actuating arm, a detent movable into locking relation to said actuating arm, means acting normally to withhold said detent from looking position, a rack on said detent, a pawl engaging said rack, means operable by successive swinging movements of said thread parter to actuate said pawl, a dog engaging said rack, means on said pawl overlying said dog and means carried by said dog adapted to'be engaged by a movable part of the loom mechanism to release said dog and pawl.

In testimony whereof, I have signed my name to this specification.

ULYSSE N. TREMBLEY.

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