US1366939A - Terry-loom - Google Patents

Description

A. E. RHUADES.

TERRY LOOM APPLICATWN HLED JUNE 17, 1919.

Patented Feb. 1,1921.

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UNITED ":ILATENT OFFICE.

ALONZO E. nnonnns, or irornnALE, MASSACHUSETTS, ASSIGNOR T0 DRAPER con.

PORATION, OF IIOPEDALE, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

TERRY-1.00M.

Specification of Letters Patent.

Application filed June 17, 1919. Serial No. 304,859.

I '0 all whom it may concern:

Be it known that I, ALoNzo E. Rnoaons, of Hopedale, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements 1n Terry-Looms, of which the following is a controlling the beat-up motion, the let-off and the let-back, which together govern the weaving mechanism to produce the desired effects. It sometimes happens in the course of the weaving that the weft hreaks, and there may be one or more missing or partial picks before the loom stops. Accordingly, the loom must be turned back so that there may be no missing picks in the weave when the loom is again started. At the same t1me, it is necessary to prevent the actuation of the let-off roll so that the terry warp Wlll not continue to be fed forwardly, as itwill be if the pawl is not thrown out of engagement with the ratchet wheel on the shaft of the terry let-off; Heretofore, it has been necessary to lift by hand the terry actuator controlling the let-ofi" motion to throw the pawl out of engagementwith the ratchet wheel on the shaft of the terry-let-off roll, and to hold it in this position while the loom is turned back.

It is the object of the present invention to provide a mechanism whereby the terry actuator will be raised and held in its raised position, thereby disengaging the actuatnig pawl for the terry let-oii' roll, so that the loom may be turned back without moving the terry let-off roll, thus giving the weaver both hands free to turn the loom back, and to restart the loom.

The improvements are illustrated in the accompanying drawings, wherein- Figure 1 is a plan view of so much of the loom as is necessary to Show the operation of the present invention. Fig. 2, is a section on the line 2-2 in Fig. 1. Fig. 3 is a section on the line 3-3 in Fig. 1.

As described in the aforesaid patents, the pattern mechanism controls the beatup mo- As set forth in the aforesaid patents there are two actuators tion, the let-back and the let-ofi' through two actuators, 10 and 11, each shown as a lever pivoted at its outer end. This pattern Patented Feb. 1,1921.

mechanism need not be here described in 1 detail being the same as in said patent N o. 15225730. Suffice it to say that a Wire 12, leads from the inner end of actuator 10 to the let-back motion, and a wire 13 leads from the inner end of actuator 11 to the beatup motion, and each forms an o oerative connection to its controlled mec anisms. 11 second wire 141- leads from the inner end of the terry actuator 11 to the terry let-off. This wire 14 connects at its lower end with one arm 28 of a bell crank lever, the other arm 29 of which is connected by a link 30 with the spring pressed pawl 20. This pawl 20 is plvotally connected to the upper end of a reciprocating rod 21 which is operatively connected to a cam shaft of the loom to feed the terry warp positively forward during the formation of the terry loops, as described in the aforesaid Patent No. 1,322,730.

The terry warp 15 runs from the usual terry warp beam (not shown) under the idle roll 16, around rough surfaced terry let-off roll 17, over and under idle roll 18, to the harnesses. The ratchet wheel 19, which is acted upon by the Spring pressed pawl 20, is fast onthe shaft of the let-off roll 17.

In all the respects thus far described the mechanism is identical with that of the aforesaid patents.

When a weft thread breaks, the loom is stopped in the usual manner, but after the thread is broken, there may be one or more missing or partial picks before the loom comes to a standstill. It, therefore, becomes necessary for the weaver to lift the terry actuator 11 by hand so as to disengage the pawl 20 from the ratchet wheel 19, and to maintain it uplifted to render the terry letoif idle while turning the loom back, and restarting the loom. This is a serious inconvenience.

The present invention provides a controller mechanism for the terry let-off actuator, and comprises a hollow shaft A mounted to rock upon a stud B screwed into the pattern mechanism supporting frame C, as shown at D in Fig. 1, and extending beneath the letback actuator. A nut E, screwing onto the reduced end of the stud B, maintains the shaft A in place. The shaft A carries near its rear end an arm F which is directly beneath the terry actuator 11. Shaft A extends-A forwardly sufficiently so that its forward end is entirely clear of the actuators. At its forward end in front of the let-back actuator, it carries a handle G.

Normally the controller mechanism is in the idle position shown in dotted lines in 3, entirely out of the plane of the actuators 10 and 11. When it becomes necessary to lift theactuator l1 and turn the loom.

, wardly beyond its axis until stoppedsby the fixedstop-68; as shown in Figs. 1 and 3,. Accordingly, it is securely held pivoted, and maintains the-terry actuator 11 in its raised position. Therefore the weaver can release the handle Gr and has both hands free to turn the loom back so that when weaving is again started the fabric will be even and 7 there will be no missing picks. \Vhen the weaver has turned the loom back it is only necessary'forhim to turn the handle G and arm'F back to idle pendent position, as indicatedin dotted lines in Fig. 3, thereby disengaging the terry actuator and permitting it to assume its lower position. Accordingly, 'less time is consumed by the weaver in correcting the defect, which in turn means that the loom is out of commission a less time thus doing more work, and the weaver is released sooner to attend to other duties.

In the present embodiment it so happens that the terry actuator must be raised. The terry actuator could just as well be arranged so that it might have to be depressed to disengage the let-oif roll, or moved sidewise. The present controller mechanism could be equally well applied to move the actuator in any of these directions.

I claim:

1. A' terry loom having a pattern-controlled terry actuator operatively connected to the beat-up motion and to the terry letoff, and a fixed stop in combination with a controller mechanism for the terry actuator comprising a rock shaft mounted upon a hired stud beneath said terry actuator, said shaft carrying near its rear end an arm directly beneath the terry actuator and carrying near its forward end a handle for rocking said shaft, said arm being normally out of the plane of the terry actuator but adapted to be rocked to coiiperate therewith to raise the terry actuator at the will of the operator and toswing past its axis and against said'fixed stop so as to hold said actuator in its raised position to permit the loom to be turned back without actuation of the terry let-off.

2. A- terry loom having in combination, a terry lct-ofi', a pattern-controlled terry letoff actuator, a fixed stop and a lifter movable to lift said actuator to a position against said stop so as to hold said actuator uplifted, whereby the loom may be turned back with out actuation of the terry let-off.

In witness whereof I have hereunto signed my name.

ALONZO E. RHOADES.

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