US766511A - Weft-tension means for looms. - Google Patents

Description

PATENTED AUG. 2, 1904.

B. F. MOGUINBSS.

WBFT TENSION MEANS FOR LOOMS.

APPLICATION FILED DEC. 21. 1903.

2 SHEETSSHEET 1- H0 MODEL.

PATENTED AUG. 2, 1904.

B. F. MGGUINESS.

WEFT TENSION MEANS FOR LOOMS.

APPLICATION FILED DEC. 21. 1903.

2 SHEETS-SHEET 2.

N0 MODEL.

UNITED STATES Patented August 2, 1904.

PATENT OFFICE.

BENJAMIN F. MGGUINESS, OF IVOROESTER, MASSACHUSETTS, ASSIGNOR TO OROMPTON & KNOWVLES LOOM WORKS, OF IVOROESTER, MASSA- CHUSETTS, A CORPORATION OF MASSACHUSETTS.

WEFT-TENSION MEANS FOR LOOIVIS- SPECIFICATION forming part of Letters Patent No. 766,511, dated August 2, 1904.

Application filed December 21,1903. Serial No. 185,948.

To all whom it may concern:

Be it known that I, BENJAMIN F. MCGUIN- ESS, a citizen of the United States, residing at WVorcester, in the county of \Vorcester and State of Massachusetts, have invented certain new and useful Improvements in \Veft-Tension Means for Looms, of which the following is a specification.

My invention relates to weft-tension means for looms and to that class of looms for weaving heavy belting, matting, &c., in which very strong and thick filling, sometimes with a wire center, is used. In this class of fabrics it is desirable to have a good and uniform selvage, and to make this the filling has to be drawn very tight after the shuttle has passed through the shed.

The object of my invention is to provide a supplemental attachment or mechanism located at each end of the lay between the shuttle-boxes and the reed and automatically operated after the shuttle has passed through the shed to grip and hold the filling and draw it tight on the forward movement of the lay and release it on the backward movement of the lay.

My invention consists in certain novel features of construction of my improvements, as will be hereinafter fully described.

I have only shown in the drawings a detached portion of one end of a lay and my improvements applied thereto sufficient to illustrate the construction and operation thereof.

Referring to the drawings, Figure 1 shows a detached sectional view of a lay in its forward position with my improvements applied thereto. Fig. 2 corresponds to Fig. 1, but shows the lay in its rear position and my filling-gripping mechanism in its opposite position; and Fig. 3 is a plan view of some of the parts shown in Fig. 1 and shows also the reed and a portion of the woven fabric.

In the accompanying drawings, 1 is the laysword, which is pivotally supported at its lower end, (not shown) and has a rocking motion in the ordinary way.

end of said link is pivotally connected to an (N0 model.)

2 is the lay.

3 is the hand-rail, supported on uprights 4, secured to the back of the lay, as is customary.

I will now describe my improvements.

A stand 5 is secured to the back of the lay, and at the upper end of said stand 5 is pivotally mounted at 5 the rear end of the gripping jaw or lever 6. Said lever 6 has in this instance a central longitudinal opening 6' therethrough, (see Fig. 3,) and the front end of said lever 6 is in this instance pivotally connected to one end of a link 7. The other arm or extension 8 on the filling-finger 8, which is pivotally mounted on a pin 9, supported on a plate 10, secured upon the top and the front surface of the lay and extends into a recess (shown by broken lines) in the upper surface of the lay and is adapted to be raised and lowered through a central opening in the plate 10. The plate 10hasa projection 10 thereon which extends out from the front of the lay.

The filling-finger 8 extends under the filling when the lay is in its rear position, as shown in Fig. 2, and when the shuttle is thrown through the shed. As the lay moves forward the finger S rocks on its pivotal support and moves up to engage and move the filling 11 forward onto the projection 10 on the plate 10, as shown in Fig. 1, into position to be engaged and gripped by the flat grippingsurfaces 6 on the lever 6. (See Fig. 1.)

I will now describe the mechanism for actuating the gripping-lever 6 and the fillingfinger 8 on the forward and backward movement of the lay. A vertically-moving rod 12 is loosely supported at its upper part in a swivel or rocking bearing in the lower end of the stand 5 and has its upper end 12 extending directly beneath and in engagement with a rear\vardly-extending projection 6 on the gripping-lever 6.

secured in place by a set-screw 15'.

The lower end of the rod 9 spring 16 encircles the rod 12 and bears at one end against the swivel-bearing 13 and at its other end against a collar 17, secured on the rod 12 by a set-screw 17. The spring 16 acts to 'hold the upper end 12 of the rod 12 in engagement with the lower surface of the projection 6 on the lever 6 and causes said lever to engage the filling 11 with a springactuated or yielding motion. On the forward movement of the lay the spring 16 is compressed and the rod 12 is moved downwardly, as shown in Fig. 1, and on the backward movement of the lay the spring 16 expands and causes the rod 12 to-mo've upwardly, as shown in Fig. 2. On the forward movement of the lay the lower end of the rod 12 is held bythe swivelbearing 13; but the upper end of said rod moves with the lay and by reason of its swivel-support on the stand 5 moves on the projection '6' on the lever 6 toward the pivotal support of said lever and causes'said lever to rock and move down and bring the engagingsurfaces 6" thereon onto the filling-thread "11 on the projection 10 on the plate 10, asshown in Fig. 1, to grip the filling between the-surfaces 6" and the projection 10. The movement of the lever 6 through link 7 moves the arm '8 on the filling-finger 8 and causes said finger 8 to move up out of the recess in the lay and engage and move forward the filling '11 onto the projection 10 on the plate 10, as shown in Fig. 1, in position'to be gripped by the grippingsurfaces 6' on the lever '6. The continued forward movement of the lay draws tight the filling 11, which is held by the lever 6, as shown in Fig. 3. On the backward movement'of the lay the rod 12 at its upper end is carried back 'withthe'lay and also moved in its swivel-support to cause its upper end to move out on the rearwardly-extending projection 6' on the lever 6 to the end thereof, as shown in Fig. '2. At the 'same time a spiral spring-18, attached at one endin this instance by a screw 19to the stand 5 andat its other end by a screw20 to the projection 6' onthe lever 6, acts tomove said lever 6 on its pivotal support and raise the outer end thereof and through link 7 and arm 8"move the finger 8 and lower said finger into the recess in the lay, as shown in Fig. 2, preparatory to another forward movement of the lay and the repetition of the-operation of my gripping'mechanism'to grip and draw tight the ation, requiring no additional work from the operator.

It will be understood that the details of construction of my improvements may be varied, if desired.

down motion at its front end, a link or connector from said lever to a rocking finger adapted to engage the filling, and said finger, of means for operating said lever and finger to lower the lever on the forward movement of the lay, and raise it on the backwardmovement of the lay, said means consisting of a vertically-movingrOd,supported on and moving with the lay at its upper end, and loosely held in a'swive'l-bearingat its lower end, and adapted to engage saidlever at its upper end, a spring to actuate said rod,and'a spring connected-to said lever, substantially as shown and described.

2. A weft-tension mechanism for looms, consisting of a lever :pivotally supported at the rear of the lay, a filling-fingerto engage and move forward the filling on the forward movement of the lay, into position 'tobe engaged by said lever,connectionsbetween said lever and finger, and meansfor operating said lever to cause it to move down to engage the filling, on the forward movement of the lay, and to move upand disengage the'filling on the backward rnovementof the lay, substantially asshown and described.

3. weft-tension mechanism for looms, consisting of 'a'lever pivotally supported at the rear of the lay, afilling-"finger to engage and move -forward -the-filling on the forward movement of the lay, into position'to be engaged by said. lever, connections between said lever and finger,'and means'for operating said lever-to cause it to move 'down to'en'gage the filling, on the forward movement of the lay, and move up to disengage the'filling on the backward movement'of thelay, said means consisting of a vertically -moving rod suppor'tcdat its upper'end onand moving with the lay, and adapted to engage a projection on said lever and'move'forward with thelay, and loosely'mounted in a swivel-support at its lower end,'and a spring to actuate said rod, and a spring connected to said lever, substantially as shown and described.

BENJ. *F. MGGUINESS.

Witnesses:

1C. IDEWEY, M. HAAs.

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