US851095A - Cop-tube. - Google Patents

Description

Nd. 851,095:- PATEN'I'ED APR.- 23, 1 907.

w. .KOBHLER.

cor TUBE.

AB I LIOATION FILED AUG. 25. 1905.

v INVENTOR: 1

WITNESSES:

THE NORRIS rtn'ns cm, wAsnmcrcm-n c.

UNITE srnrns PATNT Itlhh WILLIAM KOEHLER, or FULEEIIKEQEW YORK, ASSIGNOR TO AMERICAN TEXTILE SPECIALTY MACHINERY COMPANY, OF NEWV YORK, N. Y., A

COP-TUBE.

Specification of Letters Patent;

Patented April 23, 1907.

Applieationfiled August 25. 1905. Serial No. 275,717.

To all whom, it may concern-.-

Be it known that I, WILLIAM KOEHLER, a citizen of the United States, residing in Fulton, in the county of Oswego and. State of New York, have invented certain new and useful Improvements in Cop-Tubes, of which the following is a specification.

In cop tubes of the ordinary form, especially when used in high speed looms, there is danger of the cop slipping off the shuttle spindle under the sudden jarring movements of the shuttle, or where the cop tube sticks firmly 011 the spindle there is danger of the yarn being slid along the cop tube toward the free end or point of the spindle. The spindle and cop tube are ordinarily slightly tapered toward the point.

The present invention provides a cop tube of such a shape as to hold the yarn more firmly. It has been observed that at the ends of the cop the yarn, being supported at only one side, or less at one side than at the other, is the first portion of the yarn to be come loosened under the action of the shuttle. I propose, therefore, to provide a tube with its intermediate portion of larger diameter and its butt end and point therefore of smaller diameter, thereby holding the yarn which forms the end portion of the cop from movement longitudinally of the spindle.

Preferably also a narrow ring of enlarged diameter is formed near the point of the tube for a similar purpose.

The accompanying drawing illustrates an embodiment of the invention, the figure being partly an elevation and partly a longitudinal section of the cop tube showing the yarn in section thereon.

Referring to the embodiment illustrated, the tube is preferably made of paper, which can be easily stamped or molded to the desired shape. For convenience of reference its entire length may be considered as divided into a butt portion A, an intermediate portion. B, and a free end or point C. Preferably the intermediate portion B is provided with abrupt rectangular shoulders I) and E at its ends, and. with shallow grooves F at short intervals. Preferably also a narrow ring G of enlarged diameter is provided on the point of the tube near its extreme end. The yarn is wound onthe tube in approximately the position shown, extending from near one extreme end to the other.

The rear end portion H of the yarn, being unsupported except by the intermediate per tion J, is usually the first part of the yarn to work loose. The taper of the tube, however, prevents the yarn from working backward or toward the butt of the spindle, and the abrupt shoulder D prevents it from working forward. The portion K of the yarn nearthe point likewise is ordinarily supported only by the intermediate portion K, and is apt to work loose. The abrupt shoulder E and the ring G, however, serve to substantially prevent any such movement of the yarn K.

I have tested the form of tube shown, and find that in practice it reduces to a minimum the dil'liculties caused by loosening of the yarn.

The most important feature of the invention is the holding of the heel or butt portion of the cop. The cops are usually cross wound, and it is found that if the butt por tion be firmly held, it in turn holds the remainder. flherefore the enlarged part B of the tube may be divided, or may be made longer or shorter within considerable limits, or may be made with grooves F in any desired direction, and the separate ring G may usually be omitted.

The most convenient method of manufacture is to make separate sleeves L and. N fitting over the tube proper M to form the en larged portion B and the ring G. This can be readily applied to the main tube and glued thereon. The method of manufacture however may be varied within considerable limits.

By reason of the firmness with, which the yarn is held on the tube, it is possible with this invention to use considerably larger cops than formerly, the production of the spinning'machinc can be increased, and also the production of the loom, by eliminating the waste and. loss of time involved in changing shuttles. Experiments have shown. that with the ordinary style of cop tubes, the last layer of thread. from the heel to a point an inch or more beyond, comes off all at once, and is generally wasted. ith the present spindle it is found that the yarn runs off properly to the verylast, and there is practically no waste. This is primarily due to the shoulder D, and the saving in waste eflected is more than sulficient to cover the additional cost as compared with the plain tube.

The diameter of the part B being greater than it would be if the taper were continuous from end to end, its surface is also greater so that there is a greater area of contact for the yarn. In winding on the yarn, on the spin ning mule the sudden increase in tension due to the abrupt rectangular shoulder D and the continued comparatively great diameter of the entire central portion, cause the yarn to be wound tighter so as to hold more firmly on the plain parts of the portion B and to bite more strongly into the grooves F. Where enlargements of little axial length or of tapered ends have been used the tendency to wind tigher results merely in shifting the yarn toward one end or other of the enlargement. The long enlargement B and the abrupt ends thereof prevent such slipping and ensure the tight winding of the yarn.

Though I have described with great particularity of detail a certain specific embodiment of my invention, yet it is not to be understood therefrom that the invention is limited to the specific embodiment disclosed.

. Various modifications may be made by those skilled in the art in detail and in the arrangement and combination of the parts without departure from the invention.

What I claim is A cop tube substantially as herein shown and described, having an enlarged intermedi ate portion B of considerable length tapering toward the point of the tube and terminating in abrupt rectangular shoulders D and E, a butt A 01 smaller diameter at the point where it joins the intermediate portion B and ta ering toward said portion, and a point 8 of smaller diameter at the point where it joins the intermediate portion B and tapering away from said portion, whereby the yarn is provided with a greater bearing surface at the intermediate portion and is wound firmly on the intermediate portion without tendency to endwise slip, the enlargement of the intermediate portion of the tube being formed by a separate sleeve L fitting over the tube proper M.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

\VILLIAM KOEHLER. WVitnesses D. M. SULLIVAN, A. S. KALAR.

Images