US743674A - Center-selvage motion. - Google Patents

Description

UNrTED STATES PatentedN'rovemloer 10, 1903.

PATENT Fries.

HENRY BARDSLEY, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO OROMPTON du KNOWLES LOOM WORKS, OF WORCESTER, MASSA- CHUSETTS, A CORPORATION OF MASSACHUSETTS.

CENTER-SYELVAGE MoTioN.

SPECIFICATION forming part of Letters Patent No. 743,674, dated November 10, 1903.

Application led March 23, 1903. Serial No. 149.017- (No model.)

To all whom it Magnan/cern,.-

Beit known that I, HENRY BARDsLaY,a citizen of the United States, residing'at Providence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Center-Selvage Motions, of which the following isa specification.

My invention relates to an attachment for looms for weaving center selvages, or what is ordinarily termed a center-selvage motion, which is used on looms upon which more than one width of cloth is woven at the same time to produce a selvage in the center'or some other place in the body of the warp.

The object of my invention is to make an improved center-selvage motion of simple construction and operation; and my invention consists is certain novel features of construction of my center-selvage motion, as will be hereinafter fully described.

Referring to the drawings, Figure 1 is a front elevation of a center-selvage motion embodying my improvements looking in the direction of arrow ot, Fig. 2. Fig. 2 is a side view looking in the direction of arrow l), Fig. 1. Fig. 3 shows some of the parts shown in Fig. 1 looking in the direction of arrow c, Fig. 4. Fig.4isaside elevation of the parts shown in Fig. 3 looking in the direction of arrow d, same figure'. Fig. 5 is a detached detail of the motion-adjusting plate shown in Figs. 3 and 4, and Fig. 6 shows a detached portion of the fabric in which there is a center selvage formed by means of my center-selvage motion. Figs. 3 to 6, inclusive, are shown on an enlarged scale.

In the accompanying drawings, 1 is a detached portion of a loom-arch or some 'stationary part to which is bolted astand 2.

o thestand 2 is 1oolted by abolt 3 the upper end of a rigid bar orplate 4, which extends-in a vertical.- position back of the lay and in front of the harnesses. Y

Upon the rear side ot Atheplate 4, at the upper part thereof, which plate forms a support for the several parts of my center-selvage motion, is secured by a bolt 5 the inner end of a rigid horizontal arm 6, which has a downward extension ing a spool-stand and having two parallel 6' on its outer end formpins orshafts 7 and 7' extending out therefrom, which form shafts or supports for therotary spools 8 and 8', on which are Wound the doop-threads forming edges. The pin orshaft 7 has mounted on its projecting end aspirai spring 9, hearing at its inner end against awasher 10, loose on thepin 7, and at its outer end against a nut 11, turning on the threaded end of thepin 7. A check-nut 12 is also threaded on the end of the pin 7'. On the pin 7' are corresponding parts, (lettered 9,10, 11,and 12'.)

The arm 6,carrying the spool-stand,extends out some distance from theplate 4 and is central to the motion of the slide, to he hereinafter described, so that the doup-threads move in a longer radius, thus reducing the amount of slack in the threads and reducing the strain thereon.

Mounted on thestationary plate 4 is a vertically-moving and rockingslide 13, conthe center selvage sisting of a plate widened at its upper end ,Y

and having two rearwardly-extendingparallel arms 13 and 13", to one of whichkas 13', is attached astrap 14, extending to the upper edge of theharness 15. `'I o the other arm, as 13, is attached the strap 14', extending to the upper edge et the harness 15'. A wire orsmall rod 16 extends back ot theplate 4 and is secured at its ends in the twoarms 13 and 13 and acts to hold the upper end of theslide 13 in position on theplate 4. On the front side of the widened part of theslide 13, at the upper end of saidslide 13, are two thread-guides 17 and17' for thedoopthreads 1S and 18 from thespools 8 and 8", respectively.

Theslide 13 is widened at its lower end and has two rearwardly-extendingprojections 19 and 19 thereon which straddle or extend over the opposite edges of theplate 4 and serve as a fulcrum for the rocking motion of theslide 13 at its upper end. A wire orsmall rod 20 extends back ot theplate 4 and is sccured atits ends to the twoprojections 19 and 19' and acts to hold theslide 13 at its lower end on saidplate 4. f

A coil spiral spring 2l is attached in this instance at its upper end to the arm 6 of the spool-stand and at its lower end to the wire orsmall rod 20 and acts to raise theslide 13 on theplate 4 on the upward movement of the harness-frames. At the lower end of theslide 13 is a hub orprojection 22 to receive the twoneedles 23 and 23', which are securedr in thehub 22 byscrews 24. Theneedles 23 and 23' have eyes at their ends to receive the doup-threads 18 and 18' on thespools 8 and 8', which threads are carried to one side or the other of the warp-threads 25 and 25', which pass between the three stationary pins 4', projecting down from and secured in the lower end of theplate 4.

I will now describe the equalizer and motion adjusting stand forming a part of my center-selvage motion.

A plate 26 (shown detached in Fig. 5) extends upon the front side of theslide 13 and is adjust'ably attached thereto by abolt 27, which extends through a hole 26'in theplate 26 and through an elongated opening orperforation 28 in theslide 13. Anut 27 is secured upon the inner end of thebolt 27. (See Fig. 4.)

The position of theplate 26 by means of theslot 28 andbolt 27 may be adjusted as desired to regulate the amount of rocking motion of theslide 13. Saidplate 26 has extending rearwardly from its outer edges ears orprojections 26", which straddle or extend over the edges of theplate 4, as shown.

The engagement of theprojections 26" with the edges of theplate 4 limits the amount of rocking motion of theslide 13. Extending from the front portion of theplate 26 are twoparallel projections 26"' and 26"", having holes therein which guide the doup-threads 18 and 18'. Theupper projection 26"' has an opening therethrough to support the bent portion 29' of the rocking arm orequalizer 29, which has a loop in one end to receive the doup -threads and at its other end is attached to one end of a lightspiral spring 30. The other end of said spring is attached to an ear 3l on theplate 26.

From the above description, in connection with the drawings, the operation of my centerselvage motion will be readily understood by those skilled in the art.

The center-selvage motion is attached to thestand 2 on the loom-arch or some other stationary part, as shown in the drawings, with the needles extendingdownwardlytherefrom. If preferred, the center-selvage motion may occupy a reverse position extending below the warp-threads, with the needles projecting upwardly through the Warpthreads, as will be well understood.

The downward movement of one of the harnesses, as 15', will through the strap 14' move downwardly theslide 13 on theplate 4 against the action of the spring 2l and at the same time rock theslide 13 to carry theneedles 23 and 23' to the right, as shown in Fig. 1. The engagement of one of theprojections 26" on theplate 26 with the edge of theplate 4 limits the rocking motion of theslide 13. On the release or upward motion of the harnesses 15' thespring 21 will act to raise theslide 13, and on the downward motion of the other harness, as 15, through thestrap 14 theslide 13 will be moved downwardly and alsorocked to carry theneedles 23 and 23' to the left, as shown by broken lines in Fig. 1. The proper tension on the doup-threads 18 and 18' is obtained by means of the tension attachment connected with the spools and also by the equalizer attachment on theplate 26.

The advantages of my improvements in center-selvage motion will be readily understood by those skilled in the art.

The adjustment of'the rocking motion of theslide 13 is obtained by simply moving up or down theplate 26. Any wear on theprojections 26" on theplate 26, which engage the edges of theplate 4, is provided for by adjusting theplate 26 on theplate 4.

The spools carrying the doup-threads are supported on a `stand attached to therigid plate 4, and therefore the weight of said spools is not carried on the movable'slide13, as has been customary heretofore, and larger spools which hold a larger amount of thread may be used.

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

Having thus described my invention, what I claim as new, and desire to secure byLetters Patent, is-

1. In a center-selvage motion, the combination with a stationary plate, kof a vertically-moving and rocking needle-slide supported on said plate, and means for actuating said slide, and a motion-adjusting plate supported on said slide and vertically adjustable thereon, and means for adjusting said plate, substantially as shown and described.

2. In a center-selvage motion, the combination with a stationary plate, of a vertically-moving and rocking needle-slide supported on said plate, and means for actuating said slide, and a motion-adjusting plate adj ustably supported on said slide and having guides thereon for the doup-threads, and an equalizer or tension device on said plate for the doup-threads, substantially as shown and described.

3. In a center-selvage motion, the combination with a stationary plate, of a verticallymoving and rocking needle-slide supported on said plate and connected therewith at each end, and means for actuating said slide, and one end of the slide having two projections thereon which extend over the edges of the supporting-plate and serve as a fulcrum for the rocking motion of the slide at its opposite end, substantially as shown and described.

HENRY BARDSLEY. Witnesses:

JOHN C. DEWEY, M, HAAs.

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