US1696155A - Cloth-cutting attachment for looms - Google Patents

Description

Dec. 18, 1928. 1,696,155

vH. A. DAVIS CLOTH CUTTING ATTACHMENT FOR LOOMS Filed April 8, 1927 Fig. 1.

lnvenror. Harry A. Dovrs fill i the invention w Patented Dept 1d, 192%.

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HARRY A DAVIS, 01 HOPEDALE, MASSACHUSETTS, A$F5IGNOR Tl) DRAPER GOPEQRA- TION, F HOPEDALE, MASSACHUSETTS, A GGRPORA'IIOE 0F MAINE.

CLOTH-CUTTING- .AT'IACHMENT FOR LOOKS.

Application filed April 8, 1927. Serial No. 181,995.

This invention relates to an attachment for a loom for cutting or splitting the cloth into aplurality of strips during the weaving operation. Such attachments are useful for many purposes and particularly when the cloth is woven with what is known as an intermediate or center selvage, in which case the attachment cuts through the center of the longitudinal section of weaving forming this intermediate or center selvage.

The object of theinvention is to provide an attachment of this character so constructed as to prevent any injury to the loom operative by reason of accidental contact with the cutting instrumentality forming the essential element of the attachment The object of the invention further is to provide an attachment of this character which wi insure the cloth as is woven being guidee into co tact with the cutting edge and stretched the thereover thus secure continuous oi the clo obiect o attachn'i nt oi he invention sturther is character M constr necessary a ijustmeitoured position on the loor L c objects and features cappear more from. the accompanying i escription and drawings and w e particiaarly pointed out in the claim? The attachment is rigidly secured irons, the loom frame a? bolted rivete so the clo'fl'.

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These u secure as is GQSIIM' depending upon number strips which the cloth to be cc. it is woven The drawings illustrate so much oi a loom as is suilicient :t'or disclosure oi a preferred form oi the invention.

In the drawings:

Fig. 1 is a view in perspective out a portion of the cloth beam, sand roll and guide roll of a loom showing one attachment em bodying a preferred form of the present invention in position and acting to cut a center selvage section. a

Fig. 2 is a view in side elevation partially in vertical cross section of the attachment including a portion of its supporting bracket.

'is woven passes on its way to the take-up and cloth rolls. This breast beam is here illustrated as a convenient support for the cutting attachment. The cloth illustrated is shown as woven with a central longitudinal strip 5 in which some of the warps are omitted and which forms a center sel vage or, when severed, a selvage for each of the strips into which the cloth is thus cut. it will understood, however that the attachment is useful for cutting the cloth into strips quite independent of any peculiarity in the weave and that as many 0" these at tachments may be employed as will be found desirable,

supporting bracket *3 is bolted or otherwise securec'. as indicated. at 7 to thebreast beam and projects rearward therefrom above the plane of the cloth. A vertical post 8 herein shown as cylindrical is mounted in the rearward end bracket 6 and is vertically adjustable therein by means of the set screw 9. This post at its lower end is verticsl slotted in this slot is mounted the knife held in place by suitable pins or rivets The blade is is rigidly secure through the post 8, the bracket 6 and the breast beam from the loom frame.

The knife blade extends rearward of its shank and presents a cutting member edge 12 which, it will be seen, is inclinediorward and upward This knii'e blade also stands vertically and parallel with the warps. Its cutting edge 12 crosses the plane oi the cloth and its rear end extends well below the plane of the cloth.

A guard presser foot is also rigidly secured from the loom frame by being secured to the vpost 8. This guard foot comprises a foot portion 13 and a shank 14 terminating at its upper end in a head 15 fitting over the 0st 8 and adjustable thereon by means of tlie set screw 16. The foot portion 13 extends rearward above the cutting edge 12 of the knife blade and up to the rear end of the knife blade, or, in fact, somewhat beyond the rear end of the knife blade, as shown in Figs. '2 and 4. The rear end of the foot portion 13 flares upward and thus forms with the inclined rear end of the knife blade an open, forwardly converging mouth 17. The guard foot is also curved transversely so as to form at each side of the knife blade and spaced therefrom a depending rigid wing 18. In the construction illustrated, these wings are continued up the shank 14 and fit against the forward end of the bracket 6 to assist in positioning the guard resser foot.

It will thus be seen that the guard presser foot in cooperation with the knife blade performs three important functions. First, it thoroughly and completely guards and rotects the cutting edge 12 of the knife Blade so that it is impossible for the operative to come in contact with this cutting edge while working about the loom, as in picking out a broken weft or in handling the shuttle. Second, it forms with the knife blade the forward converging mouth 17 which acts to guide the cloth directly on to the cutting edge. Third, the wings 18 act as the cloth moves forward to press the cloth down and thus stretch it taut as it rides against the cutting edge, as shown in Fig. 5, thus to insure the desired cutting action.

The construction is extremely simple and eflieient, may be readily mounted in position and ad usted upon any given loomiind acts efliciently to cut the cloth without danger to the operative.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is:

An attachment for-looms for cutting the cloth longitudinally as it is woven comprising a knife blade adapted to be rigidly secured on a loom frame, having a forward and upward inclined cutting upper edge, the said knife blade standin vertical and parallel with the warps an edge crossing, and at its rear end extendin below, the plane of the cloth, and a guar presser foot rigidly secured upon the loom frame and extending rearward above, and up to the rear end of, the cutting edge of the knife blade, thus to protect the operative from an accidental en agement with the cutting e ge, the rear encT of said uard foot flaring upward to form with the rnife blade beneath an open, forward converging mouth for guiding the cloth onto the cutting edge the said guard foot having a dependmg rigid wing at each side of and spaced from the knife blade forwardly of said mouth, which wings act, as the cloth moves forward, to press the cloth down and thus stretch it taut as it rides against the cutting edge to insure the cloth bein cut.

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

HARRY A. DAVIS.

with the cutting

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