US394893A - Signors of one-third to herbert l - Google Patents

Description

(No Model.) a 2 SheetS-Sheet 1.

J. P. TILTON 8c W. SCOTT.

STOP MOTION POR LOOMS.

No. 394,893. Patented Dec. 18, 1.888.

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(No Model.)

J. P. TILTON & W. SCOTT.

STOP MOTION PoR Looms.

No. 394,893. Patented Dec. 18, 18.88.

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JOHN PURLEY TlLTON AND \VILLIAM SCOTT, OF LEVISTON, MAINE, AS- SIGN ORS OF ONE-THIRD TO HERBERT L. PRATT, OF SAME PLACE.

STOP-MOTION FOR LOOMS.

SPECIFICATION forming part of .Letters Patent No. 394,893, dated December 18, 1888.

Application tiled February 2, 1888.

To @ZZ whom i may concern:

lie it known that we, JOHN PURLEY TIL- TON and WILLIAM SCOTT, citizens of the United States, residing' at Lewiston, in the county of Androscogginv and State of Maine, have invented certain new and useful Improvements in Stop-Motions for Looms; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being' had to the accompanying' drawings, and to letters or iigures of reference marked thereon, which form a part of this specification.

This invention relates to an attachment to be applied to a loom for weaving' cotton cloth or textile goods of any kind, and is designed to prevent imperfections in 'the wovon cloth caused by imperfectly-separated threads or hitch-backs, so called, which frequently occur in the operation of weaving.

I'litherto in weaving cloth, and especially when weaving high-sleided goods, it not infrequently occurs that the yarns after leaving' the warp-beam are crossed or stuck tog'ether, and when such yarns reach the lease-rods they press against them, thereby tightening' such crossed yarns and often breaking them, thereby producing loose threads and otherwise causing' imperfect weavi ng. lf the thread is not broken, itis at least stretched or tightened, thus distorting the figure, and in some cases itis tightemrd to such an extent as to tear the cloth.

The present invention is designed to obviate these defects by having the leasen-ods connected with the belt-shipper by suitable mechanism, as hereinafter described, so that when the crossed thread or threads that are adhering together from any cause press against the lease-'rods it causes them to move, this movementbeingused by suitable connections to operate and throw off the shipper, thus stopping the loom and giving the operator immediate notiec of the defect and an opportunity to remedy it.

The drawings accompanying' this speeilication represent, in Figure l, a plan of part of a loom with the present invention attached. Fig. 2 is a detail view of the device and its Serial No. 262,779. (No model.)

'connections with the loom-frame omitted.

Fig'. 3 is an enlarged detail view of a portion of t-he device, showing the moving' latch and slide-bar. 4 is a perspective view of the sliding bar. Fig. 5 shows a plan, and Fig. (i a side elevation, of the latch.

In said drawings the frame of the loom is shown at N, the breast-beam at F, the lay at E,harnesses at D, and warp-beam at A, these various parts being like those ordinarily now in use on looms of this class. At c c are shown two lease-rods of ordinary construction, which extend the whole width of the warp and which divide and separate the adjacent warp-threads. The ends of these lease-rods are fastened into leather straps a d., these latter being slotted to permit the reception of the rods It' lo', one of which rods, 7c", forms an arm'. of the lever M. These slots or loops in the leather straps a a are made in such a manner and of such a size as to snugly fit the rods lf. k when they are passed through them. The rods 7c 7V" are lirmly fastened to the shaft L, this latter' beingloosl-ly journaled to the loom-fram e, so that any movement of the rods it' 7c simultaneously moves the shaft L. The rod 7c constitutes one arm of the lever M, above alluded to, the arm in. constituting the otherarm. On said arm in. is an adjustable weight, t, of sufficient size to keep the leaserods, lever M, and its connecting' mechanism in their proper position during the operation of the loom. The upper end of the rod 7c is connected with a long horizontal rod, J, the other end of said rod being securely fastened to a sliding bar, l, said sliding' bar resting in ways d, (shown by dotted lines in Fig. 3,) by means of which construction the sliding bar, whenever operated by the rod J, can readily move back and forth.

At G (see Fig. 2) is shown a lilling-stopmotion lever, so called, such as ordinarily used on looms. This lever G, when the loom is in motion, is continuously kept moving' by the operation of the cam (,the ordinary function of this lever being to throw off the shipper l' when thel iilling has run out, thereby stopping the loom. This done by means of fingers coming in contact with the filling, and when the iilling is run out they permit the lever G by suitable connections to operate and IOO throw ott: the shipper r; but as it is no part of this invention it is not necessary to describe it in detail. Inthe present device this tilling stop-motion lever is made to perform another function in a manner to be now described.

To the arm j' ot' the lever G there is attached a support or arm, (shown at 1,) to the upper end el which is loosely fastened a latch, n, the said latch being' shown in detail in Fig. lt will be observed that thesupport vi andlateh a are so fastened to the side ol:l the arm 1" oli' the Iillilig-stolymotion lever as to project out the width oli` the support 'i and .in no way i11- tcrfere with the proper operation ot' the stopmotion lever when operating' in its ordinary wav.

The sliding; bar l is constructed, as shown in Fig. 1-, with two projections, c c, the purpose of these beingI to prevent the sliding barl'rom ever getting from under the lever ll, which latter operates the shipper. One end ot' this sliding,l bar is provided with a projection, in which is formed a slot, o, in which slot the movinglatch n rests. The rod .l attached to the sliding bar at p.

4The operation ot this attachment is as li'ollows: Assumin the warp, which is shown by dotted lines l' `1', to be in position and the loom in the process ot' weavingr eloth,il` there arene cross -threads and no threads stickin together the attachment will be in its normal posit-ion, as shown in Fig'. 2; but su1j posingl a thread which is coming' [from the warp-beam and has passed over the whip-roll l5 is stuck to another thread, one of which should properly pass above and one below the lease-rods, in this ease when it reaches the lease-rod c it presses against it, and it' it does not properly separate this moves the rods 7s 7s', which in turn and at the same time move the rod J. This lat-ter moves the sliding; bar l, in which rests the latch n, sufficiently to allow said latch n to drop by reason of its curved surface, and by this dropping,` the notch (shown at 1.1) engages with the lever H, and as this lever G and latch n are always moved by the cam y the lever H is moved, the said lever being` in contact with th e sh ipper l', thus th rowin e it out of its position, and thereby stopping; the loom. ln weavingdilterent styles and kindsol' 51'(.ods there are sometimes employed a number ol' lease-rods, and it is obvious, it' the threads are caught while passing each other between the lease-rods, that this `rives the attae'lnnent the same oifleration. lt mahes no (litlerence in what part ol'I the warp the threads are stuck, as by the within-deseribed construction ol` the rods .'l ln and shal't ly the motion will have the saine el'tect it' the threads should be stuck or crossed at either selvagge as well as il' they were. stuek in any intermediate part ol the warp.

Our invention ol.' course extends tothe substantial equivalents olf the devices shown and desm'ibed, as well as to said devices themselves.

\Ve claiml. The lease-rods and straps connecting' them, in combinatioi'i with rods L' 7L", evtentfling up through said straps, the shalt l., to which these rods are attached, the weighted arm nl, extending from said shaft, the rod J, extending' from the rod 7;', the sliding bar l, connected with rod J, the lever ll, which operates the shipper e, the latch fn, allowed to drop into engagement with lever ll when the bar l is moved, and the cam and lever which operate said latch and lever l l', substantially as set forth.

2. The cam g, lever (t, lever ll, and shipper yi', in combination with the latch `11, attachetil. to said lever G, the sliding' bar which allows said. latch to l'all for engaging lever ll', the leaserods, and connectionsbetween said leasesrods and said slidingbar, l'orthe purpose set lorth.

ln testimony whereot' we altix our signatures Ain presence ot witnesses.

lV itn esses:

R. W. POTTER, B. XV. RANDALL, J. M. KIMBALL, E. L. HUTCHINs.

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