US1265590A - Weft clamping and parting mechanism for looms. - Google Patents

Description

E. F. BEAVERSTOCK.

WEFT CLAMPlNG AND PARTING MECHANISM FOR LOOMS.

APPLICATION FIL'ED SEPT. 25, 1917.

,265,59@. Patented May 7,1918.

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E. F. BEAVERSTOCK.

WEFT CLAMPING AND PARTING MECHANISM FOR LOOMS.

APPLICATION FILED SEPT. 25, 1917.

1,265,590. Patented May 7,1918.

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Fig.7 73 8 nvenfor. I Ehsha F Beuve sTocK by/md MQW EI-AISHA F. BEAVEESTOCK, 0F HOLYOKE, MASSACHUSETTS, ASSIGNUR TO BRAPER CORPORATION, 6F HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAL NE.

WEFT GLAMPING- AND PARTING MECHANISM FOR LOOMS.

Specification of Letters Patent.

Patented May '21. rare.

Application filed September 25, 1917. Serial No. 193,083.

To all whom it may concern:

Be it known that I, ELISHA F. BEAVER- STOCK, a citizen of the United States, re-

,siding at Holyoke, county of Hampden,

State of Massachusetts, have invented an improvement in eft Clamping and Parting Mechanism for Looms, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to mechanism for clamping and parting the weft of the abancloned filling carrier in weft replenishing looms.

In looms such as the automatic weft ref plenishing loom of the Northrop type it is" necessary when weft replenishment takes place .to part or sever the weft adjacent the edgeof the cloth and to provide means for preventing the trailing end extending to the abandoned filling carrier from being caught by the fresh filling carrier or the mechanism of the loom and thrown or whipped back'into the shed where it would cause an imperfection. Various mechanisms have been provided for this purpose.

The present invention provides mechanism in which the end extending from the edge of the cloth to the filling carrier is severed or parted at two points, first, adjacent the filling carrier itself, and, second, adjacent the edge of the cloth, and wherein the severed section is seized by clamping means and 'carried forward out of the way andldropped at a point where there will be no danger of its being caught and thrown. into the shed.

The present invention has for its object to provide acombination of elements for securing this result, also to provide a simple and eflicient mechanism for. severing or parting the weft adjacent the filling carrier, and also a simple and efficient mechanism forclamping the weft. and securing its removal and discharge from the loom.

These and other features of the invention. will appear more fully from the accompanying description and drawings and will be particularly pointed out in the claims.

The invention is illustrated in connection with an automatic'weft replenishing loom of the well known Northrop type, but it will be obvious that it may be embodied in any type of loom wherein the results which are accomplished by it are desirable.

In the drawings,

Figure 1 is an elevation partly in vertical cross section looking from the center toward the inside 01" the transfer end of a loom or the Northrop type with only those 'parts shown which are necessary to a disclosure of the invention;

Fig. 2 is a top plan view partly in horizontal cross section of a portion of the transfer end of the loom showing the same form of the invention as in Fig. l in position;

Fig. 3 is a side elevation partly in vertical cross section taken through the shuttle, shuttle box and lay with a preferred form of the parting means adjacent the filling carrier in place;

Fig. 4 is a longitudinal vertical cross section of the device for operating the parting means shown in Fig. '3;

Fig. 5 is a view principally in horizontal cross section of the construction shown in Fig. 3; I

Fig. 6 is a jcross sectional view taken on the line AA' of Fig. i;

Fig. 7 is a side elevation of the clamping mechanism shown as supported on the upper end of a usual shuttle fecler;

Fig. 8 is a view similar to Fig. '7 showing the parts in a different position.

Fig. 9 is a top plan view of the construc-- tion shown in Fig. 7;

Fig. 10 is a view in side elevation taken from the opposite side of Fig. 7;

Fig. 11 is a View in vertical cross section taken on't'he line 3-3 of Fig. 7

The invention is illustrated for convenience of disclosure in connection with the well known type of Northrop automatic weft replenishing loom, but as the particular construction of loom forms no part of the invention in its broader aspects, it is unnecessary to illustrate or describe the loom in detail.

It will be suliicient t9 note that the loom comprises a frame 1, the sides of which are connected by the breast beam 2, the lay 3 supported on the lay sword 4 and carrying at each end shuttle boxes. The shuttle box. 5 at the transfer end is shown with the shut: tle 6, and its substantially exhaustedlfilling carrier'7, boxed therein. The transfer mechanism is shown. as including a hopper 8 supported from the loom frame 1 and carrying a supply of fresh filling carriers 9. Upon the call for filling replenishment the usual starter rod or 10 is rotated to raise the arm 11 against the tension of the spring 12 and allow the shuttle feeler 13, pivoted at 14:, to swing rearwardly and simultaneously elevate the dog 1.5 pivoted on the depending shorter arm 16 of the transferrer 1'? into the path of the hunter 18 carried by the lay. As the lay heats up, if the shuttle feeler 1ndicates that the shuttle is properly boxed, the hunter 18 contacting with the dog 15 will depress the transferrer 17 which will force a fresh filling carrier 9 out of the hopper 8 into the shuttle therebeneath, forcing out and discharging the exhausted filling carrier 7 familiar to those skilled in this art.

The filling extendin from the abandoned filling carrier 7 throug the eye of the shuttle to the edge 19 of the cloth must be taken care of and removed from liability of being thrown into the shed or woven into the cloth. r

for severing this end at two points, firs ,"at a point adjacent the shuttle, and not far from the eye thereof so that but a short end is left to be drawn out of the eye/ and, next, at a point close to the edge 19 of the cloth.

At the latter point any well known form of temple thread cutter 20 may be employed for severing or parting the weft. At the former point mechanism is provided which is illustrated in detail in Figs. 3 to 6 inclusive. v

The shuttle box 5 at the transfer end of the loom is provided at a point intermediate its ends and in its front wall or face with an aperture 21, and a corresponding aperture 22 is formed in the side wall of the shuttle so that when. the shuttle is boxed these apertures are in alinement. A cutter support shown as an L-shaped bracket 23 is supported and carried by the lay opposite the shuttle box, being preferably mounted di rectly on the front face of the front wall of the shuttle box 5 by suitable means such as I the screw 24. This support is provided with a pair of scissor-like cutting blades movably mounted thereon'and so located that when moved they enter the alined apertures 21 and 22 and then close, thus severing the filling. In the con struction illustrated a slide bar 25 is mounted to slide transversely of the shuttle box on the face of the forwardly projflcting arm 26 of the cutter support.

vThi. slide bar is longitudinally slotted to receive and be guided. by a pair of screws 27 and .8 threaded into the arm 26 and locked in place by lock nuts 29 and 30. A. pin 31 is threaded into the rearward end of the slide 25 and projects at both sides thereof,

all in a manner well known and In this invention mechanism is prov'ded" neeaeeo provided in the arm 26 for a slot 32 being A helical. contracting spring that purpose. 3 3 is secured portion of the pin 31 and at the opposite end to a projecting portion of the screw 28 so that the slide 25 is held normally retracted as shown in Figs. 3 and 4. The scissor- like cutting blades 34 and 35 are pivoted on the pin 31 at the face of the slide bar 25 and are held in frictional cutting engagement by a helical springBG mounted on the pin 31 between the blades and an adjusting nut 37 on the end of the pin. The forward ends of-the Zolades 34: and 85 are provided with cam-shaped slots 38 and 39, respectively, which fit over the pin 27 so that as the blades are moved forwardly and rearwardly with the slide bar 25 they are opened and closed. A suitable casing 40 is held in position to cover and protect the blades by being secured against shouldered portions of the pins 27 and 28 by the nuts-41. l I

The operation of this cutting instrumentality is secured t the proper time'through the transferrer. The lower arm 16 ofthe transferrer has pivotally mounted I at the' ldwer end thereof the usual dog 15. The pivot p1nl2 1n this case is locked to the dog 15 by a set screw 43 and is conveniently extended at one side and provided; with an integral head portion 44, as shown in Fig. 6. This head portion is bored transversely at 45 to receive a guide pin 46, an enlarged section 47 of which isthreaded into one end of the bore 45 .and locked in longitudinal adjustment by the nut 48. A sliding dog shown as a plate 49 providedwith lateral flanges-50, 51 and 52 is mounted on the head a4 and guide pin. 46. This is secured by providing the plate 49 with beveled edges and fitting it in a corres ondingly shaped slot in the facepf the hea 4 1 and providing 'the flanges 51 and 52 with apertures fitting over the/guide pin 46. A helicalspring 53' at one .end to the progecting section 4:7 and the flange 51- and thus serves normally to pro ect the sliding dog rearwardly until the flange 52 contacts with the end of the threaded section 47. The position to winch the sliding dog is thus rearwardly promoted is adjustable by varying the longitudinal position of the guide pin &6

in the head 4:4: by means of the threaded section 47 and lock nut. 48. I

The operation of this parting or severing mechanism will now be apparent. The slid-- ing dog mechanism shown in Figs. 4 and 6 is mounted on the dog 15 in lineawith the slide bar'25 and in-such position that during the normal operation of the loom when the lay beats up the slide bar 25 will come opposite the head 45 and enter if necessary'the slotted portion 54 thereof. Thus, during the normal operation of the loom the slide 25 and consequently the mechanism will not naeaeeo be actuated. Upon the call for filling replenishment the dog 15 will be elevated in the usual manner and through the medium of the pivot pin 42 will carry with it the sliding dog mechanism, swinging it into such position that the outer flange 5Q of the sliding dog is in the path of the slide bar 25. As the lay new heats up the end of the slide bar 25 engages the flange and is forced t thereby rearwardly against the tension of the spring 33 causing the cutting blades to enter the aperture in the shuttle and sever the end of the weft extending from the eye of the shuttle toward the cloth. By adjusting the guide pin 16 longitudinally the proper movement and operation of the cutting blades may be insured. As the lay retracts the spring 33 restores the cutting blades to normal retracted position and, transfer having taken place, the sliding dog with its flange 50 drops with the dog 15 and is carried out of the path of the slide bar 25,

The severed end extending from adjacent the shuttle eye, or from the point at which it is severed by the-cutting mechanism just described, to the edge if the cloth is taken care of, first, by bringing itinto the field of operation of the temple thread cutter 20 by which it is again severed, this time close to the edge of the cloth and,'then, by carrying it forwardly and dropping or discharging it at such a point that it will not be liable to be caught and thrown or carried into the shed. For all these purposes this invention provides a mechanism, a preferred formof which is illustrated in detail in Figs. 7 to 11 inclusive of the drawing.

This mechanism seizes and clamps the weft preferably at a point adjacent the nose of the boxed shuttle and carries the weft forwardly bringing it into the path of the temple thread cutter and then carries and holds the weft end, now severed and free, to and in a position where it is dropped and discharged from the loom.

This. mechanism may be carried by any suitable movable support. but for convenience the usual shuttle feeler 13.is utilized. This shuttle feeler upon the call for filling replenishment swings rearwardly past the nose of the boxed shuttle feeling to ascerrain if the shuttle is properly boxed and acting if the shuttle is not properly boxed to prevent transfer taking place all in a manner well known and familiar to those skilled u: this art.

In the present invention the cutter support, in this case the shuttle feeler 13, is

provided at its end with an extended or elongated slot preferably somewhat downwardlycurved as indicated so that as the support moves rearwardly it will straddle the weft end and the weft end will pass well into the slot.

The clamping mechanism which is carried 1 clamping member.

by the support comprises essentially a fixed clamping member, that is, a member fixed with relation' to the support, a movable and preferably pivoted clamping member mounted on the support, and cotiperating with the fixed clamping member to grasp and clamp the weft lying in the slot 55, and a usher sliding on the side of the fixed clamping member opposite to that side on which the movable clamping member operates, and acting to push the end of the weft extending through the slot 55 out from the slot so that itwill hang over the same side of the fixed clamping member as the other end hangs and thus insuring that the severed weft section may be easily and readily discharged from the clamping mechanism when a the movable clamping member opens.

. The fixed clamping member in the par ticular form herein illustrated is shown as comprising two parts, namely, a main section and an auxiliary arm. The main section 56 is shown as a plate corresponding in somewhat general shape to the rearward end of the support or shuttle feeler 13 and slotted at its rearward end opposite the slot '55. The auxiliary arm 57 is shown as a thin, fiat metal plate lying between the plate 56 and the support 13 and at its rearward end bent laterally and forwardly and having the shape illustrated. These parts are held in place in fixed relation with respect to the support 13 by the studs 58 and 59 passing therethrough and threaded into the support 13.

The movable clamping member is shown as a blade-like member 60 having a hookshaped rearward end 61 and a forwardly depending tail 62. This movable member is pivotally mounted on the stud 63 threaded into the support 13. A helical spring 64: surrounds/the odter end of the stud 63 and is seated against the support 13 and the inner face of the movable clamping member 60.

thereon. This slide 66 is provided with a heart shaped opening and is mounted on the face of the pivoted clamping member and slotted to engage and slide over a projection 67 and a stud 68 carried by the pivoted This locking slide is yieldingly projected rearwardly by a spring 69 secured at 70 to the clamping member and abutting at its ends the tail 62 and the slide 66. The heart shaped opening 00- vided with a longitudinal the studs 58, 59 and 63. This pusher is for face of the plate 56.

' as thebreast beam 2. This serves as a mechanism is carried by the shuttle feeler, a v

means to control the movement of the pusher.

Any convenient means may beemployed for causing the operation of the movable or pivoted clamping member. When, as in the preferred form illustrated, the clamping transverse pin 75 projecting from the pivoted clamping member with a switch cam jecting bracket arm 77, in a manner-familiar in this type of construction. Upon the rearward movement of the shuttle feeler I this construction operates to swing the clamping member to open position and upon the beat up the lay contacting with the tail 62 acts tolsw'ing thepivoted clamping memher to closed position. I

v The operat1on of this clamping mechanism herein illustrated as a preferred em bodiment of this feature of the invention will now be readily understood. The parts normally occupy the positionindicated in Fig. 1, the support being in forward position, the tail of the pusher 7 3 resting against 1 3 swings rearwardly.

: sition by engagement of thi; pin? 5 the breast beam and caught beneath the spring 74 holding the pusher projected, the pivoted clamping member being swung downwardly to closed position. Upon the call for filling replenishment the support s it swings the pusher 71 remains stationary until it is retracted" to the limit of its" movement when the tail 73 rides from benerlth the spring 74: which yields for that purplose, and the pivoted clamping member is swung to open powith the switch cam 76. As the support reaches its rearward position'the lay beating up causes the weft extending from the shuttle to enter the slot 55 and as this slot is elongated the weft is carried well in between the clamping member. As the lay continues the beat up the weft is severed by the mechanism alshuttle and the lay} striking the tail 62' swings the pivoted clamping member to closed position, thus pinching or clamping has the weft between the two clamping members. The severed end of the weft'now hangs at the transfer side of the support 13 may cooperate 7 6 on the upwardly pro fixed clamping. member movable toward and readydescnbed intermediate the ends of the and swinging from an op and clamping mechanism while the other end extends to the fell ofthe cloth.- Asthe beat up continues the support 13 swinging forwardly carries the weft end into engagement with the temple thread cutter 20 where it is severed in the usual manner. As the beating up movement continues the tail 73 of the pusher rides beneath the spring 74:

and comes into contact with the breast beam 2 and is thereby projectedso that the parts arrive at the position illustrated in Fig. 8.

As the pusher is thus projected it pushes the end of the weft first severed out of the slot 55 and over onto the fixed clamping member as is occupied by the end of the weft last severed so' that both ends of the'severed sectlon of weft now hang same side of the over the same side of the fixed clamping member or in thiscase over the-same side of the auxiliary arm 57, the weftv section re maining held pinched or clamped between the clamping members, all as illustratedin Fi 8. The parts are new again inthe po sit on illustrated in Fig. 1. The weaving operation now continues as usual. next call for filling replenishment theopen ation described is repeated and as the piv,--

oted clamping member swingsto open pos1- over the same side of the fixed clamping Upon the 'tion the severed section of weft hanging r reason it should catch and not drop off it is promptly brushed off by the lay upon the beat up. In any casei this severed weft section drops or is brushed off at a- 'oint where it cannot be caught and whippe or carried back'into the shed to cause an imperfection.

Havingi fully described .my invention,

- what I claim as new and ddsire to secure by Letters Patent is:

1. In a weft replenishing loom a support movable toward and from the lay and provided with a longweft receiving slot extending into and transversely of its end, a secured to the side of said support beneath said slot, a pivoted clamping member pivoted on said support and swinging from an open position above said slot into a coiiperative clamping relation with saidfiired clamping member,

a pusher slidably mounted between said support and said fixed clamping member and acting when projected to push the end of a severed weft out of said slot and over the same side of the fixedclamping member as occupied by the other end of said weft.

2. In a weft replenishing loom, a support from the lay and provided with 'along weft receiving slot ex tending into and transversely of its end, a fixed. clamping member secured to the side of said support beneathsaidslot, a pivoted clamping member pivoted on said support en position above said slot. into a eoeperat ve clamping relaj y 3. In a weft replenishing loom, a sup- Leashes tioii w th saidlixed clamping member, a pusher slidably mounted between said support and said fixed clamping member, means (to sever the weft at each side of said suport, and means acting when replenishment takes place to cause the support to move toward the lay and receive the weft in said slot and between the clamping members, to

thereofland then to elevate and thus open L the pivoted clamping member freeing the weft and permitting it to drop ofi or be pushed ofi on a succeeding beat up of the lay.

port movable toward and from the lay and provided with a long weft receiving slot extending into and transversely of its end, co'ciperating clamping members secured to the side of said support opposite said slot, a pusher slidably mounted between the said support and said clamping .members and acting when projected to push a severed weft end held by the clamping members out of said- SlOt- SO that both ends of the weft will hangover the same side of one of the clamping members and thus be free when the clamping members are opened.

4:. In a weft replenishing loom the combination of elements set forth in claim 3 together with means to sever the weft of an abandoned filling carrier at each side of said support.

5. In a weft replenishing loom the combination of elements set forth in claim 3 to gether with means carried by a fixed part of the loom for efi'ecting the operation of the pusher upon the movement of the said support.

6. In a weft replenishin loom the combination of elements set iorth in claim 3 togetherwith means on the loom frame for arresting the forward movement of the pusher as it iscarried forward by said support and thus causing its said projection and a yielding catch for engaging and hold: ing the said pusher during the first part of the rearward movement of the said support.

7. A weft clamping mechanism for weft replenishing looms comprising a movable-- support slotted longitudinally to receive the weft, a fixed clamping member secured to on. and slidable transversely of said one side of said support beneath'said slot, a movable clamping member mounted at the opposite side of said fixed member and coiiperating therewith to clamp the weft,'a

pusher slidingly mounted between said support and said fixed clamping member and acting when projected after the closing of the clamp to push the'weft out of said slot and thus leave the weftheld by the clamp with both ends hanging down over the same sideof the fixed clamping member whereby upon the opening of the clamp'the welt may drop or be readily pushed ofi.

8. A weft replenishing loom comprising means carried by the lay intermediate theends of the shuttle when boxed at the trans fer end of the loom for severing the we? extending from the shuttle to the cloth means for severing the weft adjacent the cloth, means for clamping the weft between the said. points of severance and carrying it well forward; and means acting atop severance to push that end of the weld extendmg'toward-the shuttle over onto the same side of the clamping means as the other end so that upon the release of the clamping means the severed weft is free to it a.

mounted on the lay for severing" the filling extending from the shuttle eye to the cloth,

a transferrer, a pivot pin extending later ally from said transferrer, a dog mounted ivot pin, and means operative on the cal for filling replenishment to turn said pivot pin and bring said dog" into position to effect the actuation of the severingmeans upon the movement of the transferrer,

10, in a weft replenishing loom the combination of elements set foitl'i in claim 9 together with means for adjusting the rearward limit of the sliding movement oi said sliding; dog.

11. In a weft replenishing loom thaoombination of elements set forth in claim 9' l wherein the yielding sliding movements of said sliding dog is secured by providing said pivot pin with a guide pin extending transversely thereof and transversely adjustable tnerein, by mounting the'said slidmg dog on said ide pin, and mounting a helical compression spring between a'rearward portion of said sliding dog and a shoulder on said guide pin.

in testimony whereof, I have signed my name to this specification.

ELISHA F. BEA'VERSTOGK.

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