US1863815A - Cop for weft shuttles - Google Patents

Description

June 21. 1932. R, G, URNER 1,863,815

COP FQR WEFT SHUTTLES Filed Nov. 29-. 1950 PIE. 1

jM/E/v Tm? fF/L-HAHD 5. 7Z/ENER- A Trim/v56 I provide a paper cop a zone of which has been Patented June 21, 1932 UNITED STATES PATENT oF ic RICHARD G. TURNER, 0F WORCESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON 8c KNOWLES LOOM WORKS, OF WORCESTER, MASSACHUSETTS, A. CORPORATION OF MASSACHUSETTS GO]? FOR WEFT SHUTTL-ES Application filed November 29, 1930. Serial No. 499,025.

This invention relates to improvements in weft carriers or cops and it is the general object of the invention to provide a cop usable in a loom operating with an internal electrical feeler and so made that a slot provided for the feeler will not interfere with the proper unwinding of the Weft. V p e In certain forms of weft detectors there is provided a detector arm which tends to move through a slot in the cop but is restrained from such movement by the presence of weft. When fine weft is employed it is found that the end of the slot nearer the tip of the cop interferes with the free and'easy unwinding of the yarn. It is a further object of my present invention to provide the cop with an area of depressed surface which is located at the end of the slot adjacent the tip so that the yarn in unwinding will be lifted by the low shoulder defining one side of the groove or de pression and thus avoid contact with the side walls of the slot.

It is a further object of my invention to provide a slot in a cop a portion of which is at a lower level than that part around which the weft is required to unwind so that the latter will not become entangled with any fibers which may project from the sides of the slot.

It is a further object of my invention to rendered hard by a compressing operation and terminating a feeler receiving slot in this zone so as to reduce the tendency of the fibrous material of which the cop is made to separate and project upwardly into the path of the weft as the latter unwinds.

Another object of the invention relates to means on the bobbin or cop to raise the weft from the end of the feeler slot, this result being accomplished by a shoulder projecting above the end of the slot adjacent thereto and located between the slot and tip end of the feeler.

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

In the accompanying drawing, wherein a convenient embodiment of my invention is set forth,

Fig. 1 is a top plan view of a. shuttle having a cop formed according to my present invention,

Fig. 2 is anenlargedvertical section on line 2.-2 of Fig. 1 showing a fragment of the cop, I

and

Fig. 3 is a vertical section on line 33 of Fig. 2. 1

Referring to Fig. 1, the shuttle S may be provided with a spindle 1O pivoted thereto and having .a tapering shank extending to the right toward the eye E of the shuttle. The spindlehas pivoted thereto a weft'detector designated at 11 in Fig. l which is acted upon by means not shown to move through a slot 12 formed in a cop C. The latter has a series of uniformly spaced grooves 13 rolled therein for the purpose of holding the wound mass of weft on the bobbin. The weft has been omitted in the drawing but it is to be understood that under normal conditions the slot 12 will be covered by yarn so that the lever 11 is resisted in its tendency to move outwardly. The cop may be of any form such for instance as a paper tube which is formed by wrapping a single piece of paper on itself several times. In a paper cop the grooves 13 are rolled in as the cop is rotatec.

The matter thus far described forms no part of my present invention and may be substantially the same as found in common use.

In carrying my improvements into effect Figs. 1 and 2.

of the slot and the eye E.

In order further to facilitate the correct unwinding of the weft without undue interference with the edges of the slot I form the latter with a: pointed end 22 as shown -in Fig. 1, the inclined edges which define the point preferably terminating within the groove with the parallel longitudinal sides of the slot projecting slightly into the groove.

The purpose of this is to depress the corners of the slot, as it has been found that it is at these points that roughness on the part of the cop is likely to develop. I do not wish to be limited, however, to the particular relation of the end of the slot with respect to the groove, but it is desirable that the end of the slot which is nearest the eye ofthe shuttle shall be guarded by the shoulder 21. i

' In the use of my improved cop the weft will be wound over the slot 12 and the groove 20, and during the unwinding of'the last coils remaining on the cop the weft will engage the shoulder 21 and be lifted away from, the part of the slot located within the groove. I find that the process of forming the groove by rolling it compresses the paper immediately under the groove and this has the efiect of hardening the material, so that thereis an increased resistance to the formation of burrs or the separating of fibers to project upwardly into the path of the weft.

From the foregoing it will be seen that I have provided a very simple change in the usual paper cop which consists in depressing a portion of the surface thereof to guard the end of the slot so that the weft will not be entangled with small fibrous projections fromthe slot. Itwill also b-eseen that the corners and the end of theslot-near the shut I groove in which terminates a feeler receiving slot, the external diameter of the carrier at the end of the slot in the groove being less than the carrier diameter at the end of the groove adjacent the carrier tip.

4. A paper weft carrier having a zone thereof compressed to be rendered hard, the carrier having a feeler receiving slot which terminates in said zone.

5. A tapered weft carrier having a feeler slot and a shoulder locatedbetween the end of the slot and the small end of the' carrier and closely adjacent one end of the feeler slot.

6. A weft carrier having a feeler slot with a pointed end, the carrier having a peripheral groove in which the pointed end of the slot is located.

. 7. A weft carrier having a feeler slot with a pointed end, the carrier having a peripheral groove in which the pointed end of the slot extends. e z

8. A weft carrier having a feeler slot terminating in a peripheral groove, the diameter of the groove being less than the diameter of that part of the carrier at theend of the grooveadjacent the tip of the carrier. ,In testimony whereof I have hereunto affixed my signature, I q V r RICHARD G. TURNER.

tle eye are located in a zone of depressed I J area. Furthermore, it will be noted that I have provided a slight shoulder located adjacent the end of theslot and between the latter and the shuttle eye, the purpose of the shoulder being to lift the threadsomewhat away from the end of the slot; Another feature of my invention resides in the fact that the portion of the cop in which the end of the feeler receiving slot lies has been compressed so as to render the same hard for the purpose of preventing disintegration of the material defining the ends of the slot. Having thus described my invention it will be seen 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 the details herein disclosed, but what I claim is:

1. A weft carrier having a feeler receiving slot formed therein, said carrier being formed with a zone of depressed surface of less di-- 7 I diameter which is less than the diameter of the adjacent part of the cop located between the ends of the slot and the tip of the carrier. V 3. A weft carrier having a peripheral

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