US1870814A - Thread clamp - Google Patents

Description

Aug. 9, KEYS THREAD CLAMP Filed Oct. 20. 1930 2 Sheets-Sheet 1 INVENTOR ATTONEY'S.

Aug. 1932' THREAD CLAMP 2 Sheets heet 2 Filed Oct. 20. 1930 T I ,INv TOR Q BY. I v

I ATTORNEYS.

Patented Aug. 9, 1932 FATE F F ICE JEREMIAH KEYS, 0F PHILADELPHIA, PENNSYLVANIA; ASSIGNOR T'O ALVA CARPET 85 I 1 I RUG COMPANY, A CORPORATION OF PENNSYLVANIA THREAD CLAMP Application filed October 20,1930. Serial 1310,4895.

This invention relates to thread clamps adapted for use with a loom particularly in holding and anchoring the ends of warp threads which are supplied alternately from 5 two beams. v

In the weaving of certain fabrics, such as velvet or tapestry rugs, according to a method wherein one portion of a rug is woven from pile-warp threads from one beam of the loom and the other portion is woven from pile-warp threads from a second beam of the likewise hold and anchor the ends of the pile-warp threads of the first beam whilethey are inactive'and the pile-warp threads of the second beam are in operation.

Objects of this invention are to provide a simple and efiective means for holding and M anchoring the pile-warp threads, first of one m beam and then of the other beam, in carrying on the weaving operations necessary to the'making of a complete rug; and to embody such means in a single device which is 0 so constructed that it may be easily and 60 quickly attached to and detached from the ends of all of the pile-warp threads of one beam at one time and of the other beam at other times.

It is also an object of this invention to provide simple and effective means for so holding all the pile-warp threads of one beam at a time, in fixed longitudinal relation to each other, so that these pile-warp threads may be out without fear of disturbing their relative longitudinal relation and, when they are parti-colored threads, their pattern registration.

To the above ends the present invention contemplates a clamp, characterized by a pair of parallel side members, which are yieldingly pressed towards each otherbut prevented from approaching closer together than substantially the width of a clamp bar, this clamp bar being arranged so that it may be inserted between the parallel side members and carry the warp threads with it with the result that the warp threads will be'tightly clamped between the clamp bar and'the side members. ,The clamp bar is provided with a notch adapted to receive a pin'or the like secured to one of the side members at or near the end thereof and pro-- je'cting into an opening in the other of such members, the pin, together with the notched end of the clamp bar, serving as a pivot. whereby the bar maybe readily attached to and removed from the, side members, and

' whereby the clamp bar may be easily moved into clamping position between the side members; to there engage and hold the ends of the warpth'reads thatare to be anchored to a stationary part of the loom, as by supporting; the clamp on suitable brackets or the like" carriedbyjan appropriate part of the loom as, for example, the frame thereof. 7

1 Otherobjectsand advantages of the invention will become apparent from the "following description, taken inconnection with I the accompanylng ,drawlngs 1n -wh1ch- Figure 1 1s a fragmentalview 1n elevation of a'loom having the thread clamp embodying this "invention. supported thereon in thread-anchoring position; Figure 2 is a fragmental perspective view of a loom, showing the relation of certain heddles to each other and to the thread clamp when in thread-anchoring position; Figure? is an enlarged fragmentalside elevation of. the thread clamp; Figure 4is av plan view of the clamp, and Figure 5 is an end view of the clamp.

The tem, in association with which the clamp embodying this invention is herein illustrated, comprises a frame 5, including an arch-beam 6 and abreast beam 7. The

loom further comprises a. lay 8 which is constructed and operated as usual in front of a plurality of heddles 9, 10, :11, 12' and '13, the first two of which are adapted to ing threads 2, according to common practice.

During such time as the weaving operation is being carried out with respect to the set of pile-warp threads 14, the heddle 9 controlling such threads is raised and lowlongitudinal relation toeach other a-nd are anchored to a stationary part'of the loom,

such as the breast beam Such holding a y r whereby the warp threads 14 and 15,to whlch and anchoring" of thethreads isaccomplished by athread clamp-'l7,-comprising a-clamp body, which includes a pair of parallel side members 18 and18, provided along their lower" longitudinal margins .with spacing plates 19, which serve to hold theupper margins of the side members in a spaced relation, so that such side members form with each other a longitudinal grooveor channel 20inter-mediatethe upper margins there of Securedto the-lower margin of theside member 18- are a plurality ofguide pins2l, ,which are screw-threadedat-their extreme outer endsand= are spaced from each other longitudinally of that member: and project through the spacing members 19 -and the side member 18-' the yside member 18",'"together with the spacing ,member- .19 carried thereby, being freely movable on such pins. on the projecting-endo-feachpin:2l -is carried acompressionvspring 22, one-end of which engages the @outeraface :of the side member 18"and the other end of which engages a washer 23 .held-onrthe pin by a nut 24' which :is carried rby the =screw-threaded portion of the pinand'is adapted to-serve as av means whereby the thrustof the spring which is utilized to: urge the side members 18 and 18 toward each other,-m-ay be-varied.

Into the groove or channel 20, isadapted to be introduced a clamp bar' 26 .whichis of a length substantially equal to the-length-of the respective sidem'embers 18 and 18' and is of a thickness substantiallyequal to the normal width of the groove', -su'chrznormal width" being determined by the combined thickness of the *spacingmemberslQ. The

clamp bar 26 is provided at one end with a notch'27 adapted toi'receive'a pin28secured to the sidemember '18,"at or near one end thereof, and projecting *intoan'opening 29 jnthe side member ;18 -,tl1'e pin being freely slida'ble witbinfhat iopening; and serving,

together withthe notched end of'the. clamp bar, as a pivotpwhereby the' bar may be may be, depending upon which of these sets of threads is inactive during the weaving operation. As shown in F igure 5, the corners of the clamp bar 26, where it enters the groove orschannel20,are rounded or slightly curved,

and this is also true with respect to the corners of the side members at the entrance to such groove or channel, the purpose of such rounding of thesecorners being to facilitate introduction of theclamp bar into the channel and to prevent cutting the warp threads as the clamp is being applied to the same.

For removably supportingpthe clamp '17 such clamp is alternatelyapplied, may be anchored to a stationary part of the loom,

. the breast beam 7 isprovided withubrackets, [of which preferably two are provided upon the breast beam, to support and anchor the ends of the clamp. One: of these brackets is shown and indicated by .the numera1v31. Each comprises base portion 32 suitably connected to the: upper .face of the breast beam, a vertical standard 33 and a horizontal arm 34:, the. latter carrying a U-shaped yoke 35 which may be formed by bending the arm upwardly, as shown at a; downwardly, as shown at b; outwardly, as shownat 0, and

upwardly, as shown atrZ'; the arms of the 1:

yoke being spaceda sufficient distance apart to accommodate the clamp which rests upon the base portion thereof. In order. to medially support the clamp and hold it against flex 111g" under tension of the anchored warp vat f; and upwardly, as shown at g. The'dimensions of the engaging part of the bracket 36 are substantially the same asthose of: the bracket 35, so that the clamp may be introduced between the arms thereof to there rest on the base of the same. By supportingthe yoke 36 from the rear arm thereof, rather than from a front arm of the same, the bracket 37 is so disposed with respect to the suspended yoke 36 that the clamp is free to be moved rearwardly without obstruction, when lifted from the yokes 35 and 36,and it is, ofcourse, true that the clampmay be likewise introduced into these yokes when moved forwardly.

As shown in Figure 2, the warp threads 14 controlled by the heddle 9 are in operation, and the-heddle 10 is supported out of operation, and the warp threads 15 controlled by the heddle 10 are held in a fixed longitudinal relation to each other, by the clamp 17, and are anchored to a stationary part of the loom frame, namely, the breast beam 7, by that clamp which is supported by the yokes 35 and 36. Upon completion of the weaving operation with respect to the set of warp threads l l, the heddle 10 is removed from the hanger 16 and lowered to operating position and connected to the heddle-operating mechanism, not shown, and the heddle 9 control ling the set of warp threads 14 is disconnected from said heddle-operating mechanism and connected to the hanger 16 which holds that heddle up out of operating position. Then the clamp 17 is lifted from the yokes 35 and 36 and moved rearwardly and placed in such position with respect to the fell of the cloth that the warp threads 15 may be secured to the fabric at a point slightly rearwardly of the clamp. These warp threads 15 are secured to the fabric by operating the loom to throw two or three picks, whereupon the clamp is removed from the ends of warp threads 15 that protrude from the face of the fabric and applied to the warp threads 14. In applying the clamp to the warp threads l t, the clamp body is introduced between the sets of warp threads 14 and 15, the former being held up out of operative position and the latter lowered to operative position, whereupon the clamp bar is interlocked at its notched end with the pin 28 and moved-about such pin as a pivot to thread-engaging position intermediate the side members 18 and 18, the clamp bar carrying downwardly with it into the groove or channel 20 portions of the set of warp threads 14 The threads thus engaged by the clamp bar are held in a fixed longitudinal relation by reason of their being impinged, through the action of the compression springs 22, between the clamp bar 26 and the side members 18 and 18, which are permitted to yield or separate, a distance proportional to the thickness of the threads, as the clamp bar moves into clamping posi tion. After the warp threads 1d have been thus clamped, they, together with the free ends of the warp threads 15 thatprotrude from the face of the fabric, are cut or severed flush with the surface of the fabric, whereupon the clamp is lifted, moved forwardly and placed in the yokes 35 and 36, so as to anchor these threads while the weaving operation is being carried out with respect to the set of warp threads 15.

Although only one form of the invention is herein shown and described, it will be understood that certain changes may be made without departing from the spirit of the invention or the scope of the following claims:

What is claimed is:

1. A thread ciamp comprising a clamp body including a pair of side members, one of which is provided with pins and the other of which is provided with openings adapted to receive such pins, yieldable means urging said side members toward each other, and a clamp bar adapted to be moved into threaden agingposition 7 intermediate said side members.

, 2. A thread clamp comprising a clamp body including a pair of side members, one of which is provided with pinsand the other of which is provided with openings adapted to receive such pins, yieldable means urging said side members toward each other, a clamp bar adapted to be moved into thread-engaging position intermediate said side members, and means fordetachably and pivotally connecting said clamp bar to said clamp body.

3. A. thread clamp comprising a clamp body including a pair of side members, one of which is provided with pins and the other of which is provided with openings adapted to receive such pins, yieldable means urging said side members toward each other, a pivot pin carried by one of said side members, and a clamp bar having at one end a notch adapted to receive said pivot pin and adapted to serve in conjunction therewith as a separable connector between said clamp bar and said clamp body and as a pivot means whereby said clamp bar may be moved into threadengaging position intermediate said side members.

4. A; thread clamp comprising a clamp body including a pair of side members, one of which is provided with pins and the other of which is provided with openings adapted to receive such pins, a pivot pin carried by one of said side members, a clamp bar havlng at one end a notch adapted to receive said pivot pin and adapted to serve in conjunction therewith as a separable connector between said clamp bar and said clamp body and as a pivot means whereby said clamp bar may be moved into thread-engaging position intermediate said side members, and a plurality of compression springs associated with said clamp body and serving to urge said side members toward each other.

5. A thread clamp comprising a clamp body including a pair of side members, one of which is provided with a pivot pin, and a clamp bar having at one end a notch adapted to receive said pivot pin and adapted to serve in conjunction therewith as a separable connector between said clamp bar and said clamp body and as a pivot means whereby said clamp bar may be moved into thread-engaging position intermediate said side members.

6. A thread clamp comprising a clamp body including a pair of relatively movable side members, one of which is provided with a pivot pin, and a clamp bar having at one end a notch adapted to receive said pivot pin and adapted to serve in conjunction there with as a separable connector between said clamp bar and'said clamp body and as a pivot 7 means whereby said clamp bar may bemoved into thread-engaging POSItlOD intermediate said side members.

7. A thread ciamp comprisinga clamp body including a pair of relatively-movable side members, one of which is provided With a pivot pin, a clamp bar having atone end a notch adapted to receive said pivot pin and adapted to serve in conjunction therewith as a-separabie connector between said clamp bar and said clamp body and as a pivot means whereby said clamp bar may be moved into thread-engaging position intermediate said side members, and yieldable means'urging said side members toward each other.

In testimony whereof, I have signed this specification. V

JEREMIAH j KEYS.

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