US1458976A - Loom for weaving tufted fabrics - Google Patents

Description

Patented June 19, 1923. I i

UNITED STATES rasant PArENf rica.

ARTHURDAVIS, OFKIDDERMINSTER, ENGLAND, ASSIGNOR TO THOMAS BOND WORTH & SONS LIMITED, 0F STOURPORT, ENGLAND.

Application led September 4, 1918.

serial No. 252,601.

(GRANTEDUNDER THE PROVISIONS OF THE ACT OF MARCH 3, 1921, 41 STAT. L., 1313.)

To all 'whom t may concern.'

Be it known that I, ARTHUR Davis, a subject of the King of Great Britain, residing at 62 Woodfield Crescent, Kidderminster, Worcestershire, England, have invented new and useful Improvements in Looms for Weaving Tufted Fabrics, of which the following is a specification (for which I have secured Letters Patent in Great Britain, numbered 109,017, dated, March 28, 1917 This invention relates to the class or type of loom in which the pile forming yarns are cut off before being inserted between the warp threads, and is particularly adapted to looms of the AXminster type in which the yarn threads are wound side by side on a spool or spools reaching across the width of the fabric, such individual threads passing through a metal tube, as in known practice. One of the drawbacks of this arrangement is that owing to the smallcircumference of the spools, the yarn upon being unwound, retains some of its curvature which increases as the yarn is worked off the spool, and this prevents the ends which project through the tubes (it might prevent all or most of them) from assuming thatdesirable position which is necessary in order for the grippers to seize them, or at any rate ter do so with certainty and accuracy. Thus it frequently happens that an end is missed altogether by the grippers, and others only partially seized, and this possibility is always present when no special placing device is used, owing to the above cause.

My present improvements, comprise y means by which the ends of the pile forming yarns are definitely and accurately placed, no matter how pronounced the curvature may be, so ensuring that each end of tuft yarn is seized by the grippers. These means are caused to penetrate between the yarns, separating each tuft from its fellow, at a point rivht up against the mouth of the yarn tubes, no portion of the projecting piece of yarn being left uncontrolled, as would happen, if, for instance, space were left for a gripper to come in between, as in one arrangement previously proposed.

A convenient form of my said improvement is illustrated by the accompanying drawing, showingthe particular part of the loom in a sectlonal view, looking to the leftA hand side. Referring to the said drawing, a series of guide blades A is fastened at one end into a base A1 which is slitted therefor, or otherwise arranged, so that theyl shall be spaced at the same pitch as the grippers D, each slit, forl example, having one such guide blade A fastened into it. The blade base Al is connected adjustably, such as by an eyebolt P with nut Q, to a swinging lever H, and its counterpart on right hand side (not shown) fastened to a shaft I reaching across the loom from side to side, and operated from the cam shaft tube K. The knives M M are attached to cross bars orrails L L operating in slides B and C, the cross bars being reciprocated by the usual' mechanism and operating to cut the ends E when they have been drawn forthe required distance from the delivery ends of the tubes F by the 'grippers D'D. The guide blades A are attached to a base A andare moved forward.` by the swinging lever H, each blade entering its proper space between the teeth of the grippers D and so bringing the ends of the yarn tufts E eX- actly between the jaws of their respective grippers. The grippers or jaws then close,

and upon being lowered, pull the yarn tufts Eto the required length. The guide blades A then move back to their rear position, and the knives M M1 come into action, cutting the tufts E, whereupon the latter are lowered down and inserted into the warp threads. T o produce the proper insertion. the grippers holding the cut tufts are caused to turn over as kthey, approach the warps by the usual wheel and rack arrangement.

The blade base A1 has a suitably shaped extension or attachment N at each side, which rests on the knife slide O and its duplicate, or vupon any other convenient part, this support controlling the height ofthe free ends of the blades A when they are passing through the line of grippers D.

- From an inspection of the drawing and the foregoing description, it will be apparent that in operation the guide blades pass between the teeth of the transferring grippers so insuring perfect registration of the blades, tuft ends and gripper teeth.

, This is a very important feature of the invention.

I claim In a Weaving machine for tufted fabrics, tubes constituting guiding members for pile yarns, means consisting of blades at the discharge ends of the guiding members for engaging the `Varnto prevent its bending, and grippers movable With respect to said blades forv grasping the yarn.

ARTHUR DAVIS.

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