US1131608A - Loom. - Google Patents

Description

S. S.'JAGKSON.

LOOM. APPLICATION FILED NOV. 21, 1911.

1,1 31,608.. Patented M21119, 1915.

7H5 NORRIS PETERS CO.. PHOTC-LITHQ. WASHINGTON. D. c

UNITED STATES PATENT @FMCE.

SIMEON S. JACKSON, OF READVILLE, MASSACHUSETTS, ASSIGNOR TO THE STAFFORD COMPANY, OF READVILLE, MASSACHUSETTS, A CORPORATION OF NEW JERSEY.

LOOM.

Application filed November 21, 1911.

To all whom it may concern:

Be it known that I, SiMnoN S. JAcKsoN, a subject of Great Britain, residing at Readville, in the county of Norfolk, State of Massachusetts, have invented a certain new and useful Improvement in Looms, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to weft-replenishing looms of the class in which the loom is stopped automatically for the weft replenishment, and the latter is effected by the automatic weft-replenishing mechanism while the weaving mechanism stands at rest.

The general aim of the invention is to safeguard against the weaver starting up the loom, either by mistake or accidentally, while the weft-replenishing mechanism is in action, before the operations incident to replenishment have been completed and the parts restored to condition suitable for the resumption of weaving. For the accomplishment of this aim I provide means for preventing the loom-mechanism from being shipped into action until the replenishing action is safely completed. I have herein shown for the purpose a stop-device which is automatically made eflective, while the replenishing mechanism is in action, to prevent the shipper-devices from being actuated to restart the weaving mechanism. This stop is adapted for engagement with a member in connection with the shipper though normally it does not interfere with effective movement of the latter, and it is so combined operatively with a part which is called into action for the purposes of the replenishment that during such action, and until the action is safely completed, it interferes with such movement. Preferably, the stop is arranged to stand, normally, adjacent the path of an arm which moves in unison with the shipper-handle, and conveniently is operatively connected with the mechanism which raises the shuttle-box front-plate for the ejection of a spent working shuttle from the lay. Thereby, when the said front-plate is raised the stop is moved into position to interfere with movement of said arm, and thereby prevents the shipper-devices from being operated to ship the loom-mechanism into action, and when the front-plate is lowered again on the substantial completion of the replenishing ac- Specification of Letters Patent.

Patented Mar. 9, 1915.

Serial No. 661,478.

tion the stop is moved into a posit-ion in which it does not interfere with movement of the arm and shipper-devices to ship the loom-mechanism into action.

In the drawings,-Figure 1 is an end elevation of a loom having an embodiment of the invention applied thereto, showing only so much of the mechanism of the loom as is required for illustrating the relations and nature of the invention. Fig. 2 is a front elevation of certain of the parts which are shown in Fig. l at the change-end of the loom.

Having reference to the drawings, the loom-frame 1 with its breast-beam 2, the crank-shaft 3, lay pitman a, lay 5, and laybeam 6, shipper-handle 7 and shipper rockshaft 8 extending across the front of the loom immediately below the breast-beam are of usual character. The front-plate 9 of the shuttle-box at the change-end of the loom is supported, as heretofore, by the forwardly-projecting arms of a rocker 10 which is pivotally mounted at 11 upon the lay at the rear of the said shuttle-box, the said rocker having connected therewith the closing spring 12 by which the front-plate is normally held down in working position upon the lay-beam, and by which it is returned to such position after being raised. The usual means of raising the said frontplate 9 for the discharge of the spent or failed shuttle is shown, such means comprising a connecting-rod 13 having its upper end joined to a rearwardly-projecting arm of the rocker, a lever 14: having joined to its forward end the lower end of the said connecting-rod, the said lever being pivoted at 15 to a bracket 16 attached to the loom-frame, a cam 17 which acts against a roll carried by the said lever, and the change-shaft 18, upon which the said cam is fixed.

The operation of the parts thus far referred to is as usual. Thus, in the regular working of the loom the change-shaft 18 and its cam 17 stand at rest, and the frontplate 9 remains down upon the lay-beam, the shuttle-box at the change-end'of the 100111 thereby being closed and in working condition. When the working of the weaving mechanism is suspended in order that replenishment of the working weft-supply on the lay may be effected, and the changeshaft is caused to rotate, the cam 17 acts 110 through the intermediate parts to raise the front-plate, and when the spent or failed shuttle has been expelled and a fresh shuttle introduced into the shuttle-box the said cam allows the front-plate to be closed down into working position again. At 19 is the cam upon the change-shaft 18, which, upon the completion ofthe replenishing operations, and just before the'rotation of the change-shaft ceases, actuates the lever 20 and causes an upwardly-extending arm of the said lever to engage a collar 21 fast upon a rod 22 which at its forward end is joined to an arm 23 loosely mounted upon shipper rockshaft S and depending therefrom, so as to move the said arm rearward. A forward projection from the free extremity of arm 23 is connected by a stiff pullspring with an arm a fixed upon the shipper rockshaft. Consequently, rearward movement of rod 22 acts ordinarily through arm 23, the said spring, and fixed arm a to rock the shipper rockshaft so as to automatically ship the loom-mechanism into action again for the resumption of weaving.

In carrying the invention into efiect, I provide the arm a with a lateral projection a extending toward the middle of the loom. In a bracket 1) attached to the inner side of the end-frame of the loom, below the breast beam, I mount a short rockshaft 0 having fixed thereon an arm (Z which extends upward into proximity to the arm a. I also fix upon the rockshaft 0 a second arm 6, which extends downwardly and outwardly. A rod 7" connects such arm 6 with the lever 14 of the front-plate lifting mechanism. As a result of this construction, and the connection of the rockshaft 0 with the said lever, the lever when moved transmits motion to the rockshaft 0 and arm at. The arrangement is such that while lever 14 is in the position that corresponds with the lowered and closed condition of the front-plate 9 the arm cl occupies a position entirely clear of the arm a and its lateral projection (11/, such position being in this instance at the left of said arm and projection in Fig. 2. "When, however, the lever 14: is moved to raise the front-plate 9, the arm (Z is swimg (to the right in Fig. 2) into a position under the projection a of arm a. In this position the head of arm d will interfere with arm a or its projection a so as to prevent turning movement of shipper-handle 7 and shipper rockshaft 8 in the direction indicated by the arrow near the shipper-handle in Fig. 1, far

enough to ship the weaving mechanism into action.

As the front-plate 9 remains elevated until after the spent or failed working shuttle on the lay has been discharged from the lay and a fresh shuttle has been placed in the shuttle-box back of said front-plate, and as the descent of the said front-plate completes the essential operations of the replenishment, it will be obvious that a safetydevice which precludes shipping the weaving mechanism into action so long as the said front-plate remains raised, will attain the aim of the invention. The relations and timing of the cams 17 and 19, and of the parts combined therewith, are such that the lowering of the front plate 9 and shifting of the safety-arm (Z out of the way of the arm a on the shipper rockshaft 8 take place in advance of the action of cam 19 in automatically restarting the loom.

The construction and arrangement of the safety-device may be varied in practice.

What is claimed is: V

1. In an automatic weft-replenishing loom in which the replenishing is effected during suspension of the weaving action, the combination with a shipper, and with the front plate lifting means, of a shipper-lock combined with said means and caused thereby to lock the shipper to prevent the weaving mechanism from being shipped into action until the replenishing action has been safely completed.

2. In an automatic weft-replenishing loom, the combination with a shipper, and the front-plate lifting means, of a device operatively combined with said means and caused thereby to interfere with actuation of the shipper to ship the weaving mechanism into action until the front-plate has been closed into working position.

3. In an automatic weft-replenishing loom, the combination with a shipper and an arm connected therewith, and the frontplate lifting means, of an interference-arm operatively combined with said lifting means and operated thereby to prevent the shipper from shipping the weaving mechanism into action while the front-plate is lifted.

In testimony whereof I afiix my signature in presence of two witnesses.

SIMEON S. JACKSON.

'Witnesses:

CHAS. F. RANDALL, Enrrr-r A. VVISEMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. p

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