US1561433A - Yarn tube for looms - Google Patents

Description

Nov. 10, 1925- 1,561,433

J. H. JOHNSON YARN TUBE FOR Locus Filed March 9, 1925 INVENTOR.

byQW ATTORNEY.

Patented Nov. 10, 1925.

UNITED STATES JAMES H. JOHNSON, F AMSTERDAM, NEW YORK.

YARN TUBE FOR LGOIVIS.

Application filed March 9, 1925. serial No. 14,043.

To all whom it may concern.

Be it known that I, JAMES H. JoHNsoN, a citizen of the United States, residing at Amsterdam, in the county of Montgomery and State of New York, have invented certain new and useful Improvements in Yarn Tubes for Looms, of which the following is a specification.

This invention relates to tube frames for W looms, particularly to the tuft yarn tubes used on the tube frames of Axminster looms.

The tuft yarn tubes now in general use are tapering metal tubes, either seamless or of lap seam construction, and the yarns with which they are threaded must be entered longitudinally therethrough either by hand or by aid of more or less intricate threading devices adapted to push, or pull, the yarns into place.

The object of this invention is to provide a tuft yarn tube for use on tube frames, which will be self-threading in that it is only necessary to force the tube against a taut tuft yarn in order to cause the same to enter the tube.

The manner in which I accomplish my object is illustrated in the accompanying drawings, which are in a certain sense illustrative only and in which:

Fig. 1 is a front elevation of a portion of a tube frame equipped with my improved self-threading tuft-yarn tubes.

Fig. 2 is a section across such atube frame.

Figs. 3 and 4 are details of a tube made in accordance with this invention.

The same reference characters refer to the same parts throughout the several views.

Referring to the drawings, 2 represents a usual tube bar which may be of either wood or metal, 3 a usual chain-engaging end bracket, 4: a portion of a typical tuft-yarn spool, 5 a usual tension spring, and 6 my improved self-threading tuft-yarn tubes.

In tube frames provided with my improved 4.5 self-threading yarn tubes, the tuft yarn spools are preferably so placed on the frame that the yarn leaves the spool in the manner or direction indicated by Fig. 2 of the drawings.

The general outline of my improved yarn tubes is substantially the same as in the present usual types which taper toward the lower or delivery end. They differ, however, in the following respects: presenttypes of tubes are either seamless or'so formed of sheet metal that the edges of the blank lap at the side or back of the tube, while in my improved self-threading tube the blank is so formed. that two edges of the blank butt together and form the front or narrow side of the tube. This leaves the front wall of the tube with a dividing slit or seam and this scam opens out at the top so as to leave a V-shaped notch leading into the seam. My improved tube is made of suitable resilient material, so that if a yarn is pressedinto this notch and drawn strongly against the seam the sides of the 'tube will yield enough to permit the yarn to pass through the seam and enter the tube.

It is self evident that by making a tube with a seam in the front side thereof, and with a notch forming an entrance to the seam, and making the tube of suitable re silient material so that the seam may be sprung open by the forcing of a yarn thereinto, I have provided a tube which is selfthreading to the extent set forth in the preamble, and that my tube may be threaded by simply placing a taut yarn in the notch and then forcing the tube upward so as to cause it to describe an are crossing the yarn.

As the yarns which yarn tubes of this type are adapted to handle are often of comparatively soft texture, it is necessary in order to thread them in the tubes in the manner contemplated without damage, that the edges between which they are to be forced be smooth. To insure smooth edges at the seam and entrance notch I may turn the edges of the blank back upon themselves somewhat as illustrated, or I may turn them back for a part only of their length. I do not, however wish to limit myself to this particular method of forming a smooth edge between which to force the yarn, as such an edge maybe made in any suitable manner without departing from the spirit of this invention.

I claim:

1. In a yarn tube for a tube frame, a longitudinal slit dividing the wall of the tube, the end of said slit opened out so as to form a V-shaped guide whereby a yarn may be entered into and caused to force open said slit and enter said tube.

2. A yarn tube for a tube frame, made of resilient material and having a longitudinal slit dividing the forward wall thereof, said slit adapted to permit a yarn to be forced shaped and formed that two edges of said blank butt togeti'ier and form the front wall of the tube, one end of the seam formed by the abutting edges opened out to form a guide whereby 2L yarn may be caused to wedge into and force open said seam and so m ss into said tube.

In testimony whereof I have affixed my signature.

JAMES H. JOHNSON.

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