US1703883A - Cloth board for looms - Google Patents

Description

Mar. 5, 1929. E. R. HOLMES 1,703,333

cL'rH Bonn Fon Lols Filed Aug. 22, 1927- [Wm/ar 5719/72/96 //nes zu@ @M Patented Mar. 5, 1929.

1,703,883 Y f UNITED .STATES PATENT OFFICE.

MASSACHUSETTS.

ELBRIDGE R. HOLMES, OF W'ORCIBSTIEJB., MASSACHUSETTS, ASSIGNOR TO CBOMPTON & KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A CORPORATION OIF'V cLorH BOARD `For. Looms.

Application led August 22, 1927. Serial No. 214,506.

.multi-ply fabrics. V

In such fabrics as woven-heavy belting, the warp threads are separated by parallel planes of weft threads but the fabric is usually woven with a single shuttle so that weft can be laid in but one plane at a time. WVhen weft is beinglaid in the top plane, for instance, most of the warp threads will be vdown and there will beY a .tendency to overbalance the lifting' force of the comparatively few warp threads in the upper shed, the effect of which isto move the fell of the cloth below its normal or mid position. On the other hand when the shuttle is laying the lowest pick of filling the major part of the warp threads will be up and the effect will be to raise the fell above its normal or mid position. This causes variation in the vertical position of the fell of the cloth which produces a cor-responding change in the shed lines and the space through which the shuttle may pass. The` shuttles in looms of the type to which the invention more closely relates must travel in fixed paths and the variationin the'shed is objectionable for this reason. It is an important object of my present invention to provide a support for multi-ply fabrics to be located closely adjacent the fellrand so placed as to sustain the fabric in a relatively high position so that when the lowest pick of filling is beingY laid and the majority of the warp threads are lifted the fabric being woven will still rest on the support. It frequently happens that a loom which at one time is weaving multi-ply fabric may later be used to weave simpler cloth and it is desirable to be able to remove the support for the cloth and allow the latter to have Contact with the breast beam at a relatively forward point in thetravel of the cloth. It is accordingly a further object of my invention to provide a removable cloth board or support and it is a still further object of the invention to render said support adjustable as regards its location with respect to the fell of the cloth.

I make that vpart of the device which is Y permanently secured to the breast beam -With a curved surface and so proportion the other l part which has direct contact with the fell of the cloth as to require thel fabric to move to the curved surface in a sli htlyvdownward direction, the purpose of t is construction being to keepV the fabric against the cloth board when the warps are in their highest position.

With these and other objects in view which will appear 'as the description proceeds, my invention resides in the combinat1on .l and arrangement of parts `hereinafter described and set forth in the claims. y

In the accompanying drawings, wherein I have shown a convenient embodiment of myr invention,

Fig. 1 is' al vertical section through aportlon of a loom having my invention applied thereto and showingl the cloth support in relatively rear position where it will support a multi-pl fabric,

Fig. 2 is a etailed top plan view taken in the direction of arrow 2, Fig. 1,

Fig. 3 is an enlarged top plan view of certain parts shown in Fi 2 and taken in the direction of arrow 3, ig. 1,

F ig. 4 is a vertical section on line 4-'-4 of Fig. 3, and

Fig. 5 is a transverse vertical line 5 5 of Fig. 4.

While my invention is applicable to various types of looms I have chosen to illustrate the same in connection with a narrow ware loom' such asmay'be employed in the weaving of heavy belting. A loom frame 10 supports a Warp beam 11 and there is provided the usual lay or batten 12 in which move the `narrow ware shuttles one of which is indicated at 13 in Fig. 1. A snitably driven take-up roll 14 provides means for advancing the fabric through the loom and the cloth may be collected on cloth roll 15. The harness frames 16 may be operated by any of the well-known harness Inotions such as a dobby and the loom isprovided with a breast beam 17 formed as an I-beam. The parts described heretofore may of common construction and form no part of my present invention, the harness frames moving ina predetermined order to raise the warp vthreads to provide a shed for the passage of the shuttle 14.

In carryin my 'invention intol eect I provide a serles of cloth boards or suports, one for each shuttle and read space, utas section on nol ilo

v substantially horizontal portion 84.

` these supports are all the same I have illustrated but one of them in the drawings.

VReferring particularly to Figs. 2, 3, 4 and 5 it will be seen that I have provided a stand having ears 31 through which eX- tend bolts 32 vto secure the frame or stand to the web of the breast beam. As shown more particularly in Fig. 4 the stand is provided with an upwardly and rearwardly curving surface 33 which terminates in a The c urved portion is connected to the ears, 3l

' -by means of vertical walls 35. The stand v30 is Y, secured permanently to the breast beam and ma be used when a comparatively simple fabric is being woven to guideV the same through a slot 36 cut in the beam y to permit the passage of the cloth, said slot being shown morev particularly in Figs. 3

and 4. Y c

When it is desired to weave av heavy or multi-ply fabric a cloth support 40 may be employed, said support having a forwardly extendingshank 4l with side walls which fit closely into grooves 42 formed in the underside of the stand 30. A securing bolt or screw 43 passes through the shank and into the-rear portion of the stand, said bolt extendingthrough Va slot 44 in the shank to control the sheds as the harnesses operate.

From the foregoing it will be seen that I have provided a simple cloth board to support a relatively heavy fabric, said supporthaving one member which is permanently secured to the loom frame and provided v with a curved surface and said support having another member secured to the first part and extending rearwardly toward the fell Cil ofthe goods and having an upper cloth supportingl surface which is somewhat abovethe highest point of the curved surface on the first member. It will further `be seen vthat relative adjustment between the two parts of the support maybe made andv that if desired the rear support vmay be entirely removed. l

Having thus described my invention it will be apparent that changes and modifications 'may be made therein by' those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to thedetailsy hereinjdisclosed, but what I claim is;

l.. In a loom having a breast beam, a twopart cloth support one part of which is se- By loosening the bolt 43 and Lacasse cured directly to the breast beam and has a cloth engaging upwardly and rearwardly curved surface, the other part of the support having a cloth engaging portion, and a forward extension rigid with the'cloth engaging portion and projecting under the'curved surface and secured to the first part.

2. In a loom having a breast beam, a twopart cloth support one part of which is secured directlyl to the Vbreast beam and has a cloth engaging upwardly and rearwardly curved surface, the other part of the support having a cloth engaging portioma forward extension rigid with the cloth engaging portion and projectingunder the curved surface and.- secured to the first part, and cooperating means formed on the two parts dening a slidingl connection between said parts whereby the second namedppart may be moved lrelatively to' the first named part in the direction in which the cloth moves on the loom.` Y

3. In a loom having abreast beam, a 'primary support secured to the breast beam andhaving an upwardly and rearwardlyv Vcloth engaging surface, a guideway formed on the underside of the primary support extending in the general direction in which the cloth moves through the loom, and a secondary cloth support having a cloth engaging upwardly facing surface and a forward extension to be received bythe guideway, .said forward .extension projecting under the `curved ,surface and secured to the primary cloth support. l

4. Ina loom having a breastbeam, a primary cloth support secured to the breast beam and'having an upwardly and rearwardly curved clot-h engaging surface, a guideway formed in the primary cloth support extendingsubstantially parallel to the path along which the cloth moves in the loom, said .guideway lying under the curved surface, a secondary cloth support having an upwardly facing surface to engage the uncer side of the cloth, a forward exten- -sion formed as part of said secondary support which is receivedbyl the guideway of the primary support, said extension having a slot therein substantially parallel to the guideway in the primary support, and means passing through the slotfand engaging the extension and secured to the primary support to hold. the secondary support securely in position relatively tothe primary support.

5..In a loom having a breast beam, a primary cloth support secured to the breast beamand havingV an upwardly and rearwardly curved cloth engaging surface, a

guideway formed inthe primary cloth support extending substantially parallel to the path along whichk the cloth moves in the loom, said guideway lying under thecurved surface, a secondary cloth support having an upwardly facing surface to engage the under side of the cloth, a forward extension formed as part of said secondary support which is received by the guideway of the primary support, said extension having a slot therein substantially parallel to the guideway in the primary support, and means passing through the slot and engaging the extension and secured to the primary support to hold the secondary support securely in position relatively to the primary sup-r port, said extension lying under the curved surface of the primary support.

In testimony whereof I have hereunto affixed my signature.

ELBRIDGE R. HOLMES.

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