GB303409A - Improvements in and relating to drawing mechanism of spinning machines - Google Patents

Abstract

303,409. Hoffmann, F. Jan. 2, ]928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Rollers and roller heads; roving guides. - In drawing-mechanism for spinning-machines the sliver is guided between the front rollers c, d and the middle rollers f, g by a, guide member m, directly or through the medium of a belt k, so that it contacts with the lower middle roller g along an arc and passes therefrom in the direction of a tangent intersecting the lower front roller d. The slider may be similarly guided by means of a guide member n between the feed rollers, and the rollers f, g. The members m, n are carried by a frame comprising straps p, Fig. 3, connected by rods or bars q, r, and riding on the parts f<2> of the roller f. The frame, is supported in the roller stands in the same manner as the top middle roller in the usual three-pair roller heads, and permits the ready conversion of such heads into a high-draft head. The weighting. saddle of the rollers c, f engages the frame with slight play to hold it in position, and the lower surface of the saddle is such that, if by reason of the stiffness of the belt the upper surfaces of the bars q, r contact therewith, the frame, is maintained by the weighing-means in such position that the, guide members w, n are so placed to ensure the desired path for the sliver. A rod s, provided with projections t to serve as roving guides, is detachably connected to the frame by screws v; its overturned ends serve as guides for the belt k, if used, and projections from the member m may be provided to serve as guides for the forward run of the belt.