US1861249A - Spinning ring and shield - Google Patents

Description

May 31, 1932. H. B. STUART SPINNING RING AND SHIELD Filed Dec. 7, 1951 I NVENTOR.

ATTORNEYS Patented May 31, 1932 UNITED STATES PATENT OFFICE HENRY B. STUART, OF WHITINSVILLE, MASSACHUSETTS, ASSIGNOB T0 WHITIN MACHINE WORKS, OF WHITINSVILLCE, MASSACHUSETTS, A CORPORATION OF MASSA- CI-IUSETTS SPINNING RING AND SHIELD Application filed December 7, 1931. Serial No. 579,618.

This invention relates to rings and ring travelers used in spinning and twisting machines. VVhen spinning or twisting yarn at high speed, it is desirable to lubricate the inner faces of the rings in order to reduce traveler friction. Broken ends of thread sometimes wipe across these lubricated surfaces and transfer the oil and dirt to one or more adjacent bobbins, thus injuring the yarn which has been previously wound on the bobbins.

It is the object of my invention to provide an improved device for protecting the threads and bobbins from any oil, grease or dirt which might otherwise be thrown off by the traveler or transferred by a broken end of thread.

To the accomplishmentof this object, Iprovide a cylindrical shield interposed between the ring and the bobbin, together with improved means for holding the shield in fixed relation to the ring and to the ring holder.

My invention further relates to arrange ments and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention, together with a modification thereof is shown in the drawings, in which Fig. l is a plan view of a spinning ring and holder having my invention applied thereto;

Fig. 2 is a side elevation of the parts shown in Fig. 1;

Fig. 3 is a sectional side elevation, taken along the line 3-8 in Fig. 1;

Fig. 4 is an enlarged detail sectional side elevation;

Fig. 5 is a plan view of a ring and holder to which my invention has been applied in a modified form;

Fig. 6 is a sectional side elevation, taken along the line 6-6 in Fig. 5;

Fig. 7 is a plan view of the shield shown in Figs. 5 and 6, and

Fig. 8 is a sectional side elevation of the shield, taken along the line 8-8 in Fig. 7.

Referring to Figs. 1 to 4, I have shown a portion of a ring rail 10 in which a split ring holder 11 is secured by a clamping screw 12. The upper surface of the holder 11 is provided with an undercut recess 14 adapted to receive the lower flange of a reversible flat top ring 20. A traveler T snaps on to the upper flange of the ring 20 in the usual way and travels at high speed around the ring during the spinning or twisting of the thread. The parts thus far described are of a usual commercial form.

My improved shield 22 is mounted within the ring 20 and comprises a cylindrical upwardly extending portion 24 and an outwardly extending horizontal flanged portion 25.

The ring holder 11 is provided with a second annular recess 30 in its upper face, adapted to receive and center the horizontal flange 25 of the shield 22. This flange is of such thickness that its upper surface will be engaged by the lower surface of the bottom flange of the ring 20 when the ring is secured in the holder 11 by tightening the screw 12.

When thus secured, the shield 22 is firmly held in fixed position and the cylindrical portion 24 thereof is accurately centered with respect to the ring 20, with the upper edge portion of the flange 24 spaced somewhat inwardly from the top flange of the ring and preferably disposed slightly below the upper surface of the top flange.

With the shield 22 in the described position, clearance is provided for the traveler T and for the yarn but the shield protects the inner surface of the ring to which lubricant may have been applied and in particular prevents a broken end of thread from engaging and wiping across a lubricated and more or less dirty surface.

In the form shown in Figs. 5 to 8, I use a sheet metal ring holder 40 having spaced ears 41 by which the ring 20 is centered and secured. In this case the shield 42 is provided with a somewhat wider horizontal flange 43 having spaced notches 44 (Fig. 7). These notches 44 receive the ring-holding ears 41 and the shield 42 is centered and held from rotation by the ears 41, which extend upward through the notches 44 to engage the lower flange of the ring 20, as with the usual sheet metal ring holder.

In both described constructions it will be seen that the horizontal flange of the shield is clamped between an upper surface of the holder and an under surface of the ring, and that provision is made for accurately centering the shield with respect to the ring and holder.

Furthermore, it will be obvious that the same holders may be used for holding the rings 20 with the shields 22 or 42 in place or omitted. In the construction shown in Figs. 1 to 4, the ring is held in the undercut recess 14 in exactly the same manner, whether or not the shield is used, and in the construction shown in Figs. 5 to 8 it is merely necessary to bend the ears 41 slightly downward to firmly engage and center the ring if the shield 42 is omitted.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is 1. Spinning or twisting mechanism comprising a reversible flat top ring, a holder therefor, and a shield having an outwardly extended horizontal flange clamped between an upper surface of said holder and a lower surface of said ring, said shield also having a cylindrical portion extending upward substantially to the upper flange of said ring and spaced inwardly therefrom.

2. The combination in spinning or twisting mechanism as set forth in claim 1, in which the holder has a circular recess in its upper surface to receive the outer portion of the horizontal flange of the shield, thereby centering the shield with respect to the ring.

3. The combination in spinning or twisting mechanism as set forth in claim 1, in which the holder has spaced ring-engaging ears and in which the horizontal flange of the shield is notched to receive said ears and is centered and held from rotation thereby.

In testimony whereof I have hereunto affixed my signature.

HENRY B. STUART.

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