US784310A - Warp-guiding means for looms. - Google Patents

Description

No. 784,810. PATENTED MAR. '7, 1905. C. H. DRAPER:

WAR? GUIDING MEANS FOR LOOMS.

APPLICATION FILED NOV. 18, 1904.

No. 784,310. Patented March '7, 1905.

UNITED STATES PATENT OFFICE.

CLARE H. DRAPER, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPO- RATION OF MAINE.

WARP-GUIDING MEANS FOR LOOMS,

SPECIFICATION forming part of Letters Patent No. 784,310, dated March '7', 1905.

Application filed November 18, 190A. Serial No. 233,261

To (Z7 1071/0111 it may OOH/ is a comb having upright teeth, the use of a l l l Be it known thatI, CLARE H. DRAPER, aciticomb obviating the necessity of drawing in Zen of the United States, and a resident of the warps, as the latter are easily and quickly Hopedale, county of orcester, State of Masintroduced between the teeth of the comb af- 5 sachusetts, have invented an Improvementin ter the new beam is placedin the loom. I IVarp-(Jruiding Means for Looms, of which also use a comb having laterally-ad iustable the following description, in connection with tecth,as thereby the arrangementof the warps the accompanying drawings, is aspecilication, is facilitated, as will be explained more fully like characters on the drawings representing hereinafter.

10 like parts. The various novel features of my invention It is very general practice in weaving texwill be fully described in the subjoined specitile fabric to use a warp-beam on which the cation, and particularly pointed out in the folmass of warp is wider than the cloth at the lowing claims. fell, because it contains more yarn, and thus Figure 1 is a side elevation of a suflicient 5 saves in expense of frequent drawing in. As portion of a loom to be understood with one a result of such practice, the longitudinal embodiment of my invention applied thereto. edges of the sheet of warp converge from the Fig. 2 is a perspective view of a convenient 5 beam to the reed, passing through the harform of warp-guide, and Fig. 3 is a diagramnesses, and as the lay swings back and forth matic plan view showing the operation in a 20 the angles of many of the warp-threads change, loom embodying my invention.

particularly those threads nearer the edges of Referring to Fig. 1, the reciprocating lay the warp.v The reed-dents thus exert a saw- A", the reed R carried thereby, harnesses 7 ing or rubbing action on the warp-threads as H H, lease-rods L, and whip roll or bar IV the threads are moved in and out laterally, may be and are all of well-known construc- 5 and a great deal of undesirable wear is protion and operate in usual manner. At a conduced, causing numerous warp breakages venient place behind the harnesses I introduce and acting with objectionable results on the means to guide and aline the warp-thre:uls harnesses. When the steel heddles or harinto substantial parallelism with the paths of nesses are used, the lateral movement of the movement of the reed -dents, and, referring 3 warp-threads imparts a corresponding moveto Fig. I, I have shown suitable brackets 1, ment to the cooperating portions of the harsecured to the loom sides A, one at each side, nesses,causingundue wear and frequent breakand said brackets support a comb. This comb 3O ages. It will be manifest that if the warpmay be convenientlysuch as shown in Fig. 2, threads are properly alined relatively to the comprising a box 2 and upright laterally-ml- 3 5 paths of movement of the reed-dents the backjustableteeth 3, mounted therein,substantially and-forth movement of the lay will move the a well-known form of comb used in warpingdents parallel to the threads, whereas if the machines. I use such a form of comb because 5 threads are not so alined the adjacent dents the teeth thereof can be spread in the first in-- must rub or saw across them with the results stance to as nearly as possible accommodate 4 set forth. the width of the beam, after which the warp My present inventon has for its object the threads are introduced between the teeth. production of means to overcome the objec- Then the comb is adjusted to contract the teeth, 9 tions stated, and accordingly I have provided thereby decreasing the spaces between them Warp-guiding means located behind the harand reducing the width of the sheet of warp to- 45 nesses to positively act upon and guide the that of the reed and harnesses. Iam thus enwarp-threads in parallelism with the paths of abled to obviate the step of drawingin the warp movement of the reed-dents. through an additional reed, and I am further The Warp-guiding means employed by me enabled to quickly and accurately contract the width of the sheet of warp to the proper extent between the beam and the harnesses. The teeth or guide members project upward through the warp w, and the series of teeth are arranged transversely thereof, herein being shown between the whip-roll and the re lease-rods. The teeth 3 are so positioned that they will engage and draw in and positively position the warp-threads, particularly those nearer the edges of the warp in parallelism With the paths of movement of the reed-dents. The operation of the comb is clearly shown in Fig. 3, the width of the warp being reduced thereby from the width of the yarn mass on the beam to substantially the width of the cloth. With this arrangement any lateral derangement of the warp-threads as they pass from the beam will be corrected, and the motion of the harnesses in the formation of the shed cannot throw the threads out of the proper alinemcnt, while conversely the harnesses are not subjected to any undesirable lateral displacement.

As the threads are led in parallelism with the path of movement of the reed-dents there can be no cross rubbing or sawing, and hence the wear of the reed-dents upon the warps is reduced to a minimum. The warper-comb is very convenient as the guiding means, as the teeth can be spread when the comb is applied and then drawn in by reducing the spaces between them to reduce the width of the warp to the desired extent.

Having fully described my invention, what I claim as new, and desire to secure by Letters 3 5 Patent, is

1. In a loom, a reciprocating lay provided with a reed, harnesses, and a comb lixedly mounted on the loom behind the harnesses, transversely of the warp and having laterally-adjustable teeth, the teeth of the comb passing through the warp and guiding the threads in parallelism with the paths of movement of the reed-dents, whereby the sheet of warp can be reduced to the desired width after the warp-threads have been introduced between the laterally expanded or separated teeth of the comb.

2. In a loom, a reciprocating lay provided with a reed, harnesses, a warp-beam adapted to sustain a yarn mass wider than the reed, and a comb havinglaterally adjustableorcontractible upright guide-teeth located intermediate the beam and the harnesses to pass between the war 'i-tln'eads and contract the width of the sheet of warp, and substantially aline the warp-threads with the reed-dents and the heddle members of the harnesses. to prevent wear on the warp-threads and lateral displacement of the heddle members.

In testimony whereol l have signed my name to this specification in the presence of two subscribing witnesses.

ULARE ll. [)l-tAllCl-i.

\Vitnesses:

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