679,027. Coiling slivers. T.M.M. (RESEA RCH), Ltd. Sept. 5, 1950 [Sept 27, 1949; July 7, 1950], Nos. 24778/49 and 17025/50. Class 120(iii) A sliver-coiling appara tus comprises a guide-ele ment to which is impartec two concurrent motions i.e. a precessional motior by which the sliver is laic in a continuous series of coils and an orbital motior whereby the position of each successive coil is progressively advanced along the orbit path. In the apparatus shown ir Figs. 1 and 3, two calender rollers as at 2( are rotated in opposite directions from the driving shaft 13 through bevel gears 14, 15, a shaft 16 and pinions as at 18, tc deliver sliver, fed through a trumpet-guide 8, to a coiler mechanism comprising two components 27, 28, pasasges 29, 30, of which form an inclined duct by which the sliver is led to a cam 31. The component 28, which is mounted on a plate 35, having capability of rotation about the orbital axis Y-Y, is rotated about the eccentric precessional axis X-X by means of a pinion 36, and idler gears 37 and 40, the latter gear meshing with an annular gear 33 driven through an idler gear by a spur wheel 42 fixed to the shaft 13. The component 27, a boss 45 of which is rotatably mounted in a recess 46 in the component 28, is given an intermittent anti-clockwise rotation about the axis Y-Y by means of a cam 47 actuating a bowl 48 of a lever 49 carrying a free-wheel device incorporating a roller 52 and a coacting inclined face 54, a similar free-wheel device carried on a bracket 51 preventing clockwise rotation. The intermittent rotation is transmitted to the component 28 by the engagement of a projection 43 in a recess 44 in the plate 35. Another modification, Fig. 4, comprises a single inclined guide passage 58 incorporated in an element 57 to which the dual motion is applied: rotation of the shaft 13 drives through a pinion 68, spur gear 67, annular gear 64 and an internal spur gear 65 thereof meshing with a pinion ring 66 to rotate the element 57 on a carrier annulus 61 about the X-X axis, and also causes rotation of a pinion 72, mounted loosely and eccentrically thereon and fixed to a pinion 73 in mesh with a fixed internal spur gear 74, hence through an adjustable reduction train 71, 70, 69, and a gear ring 62, rotating the annulus 61 to impart to the element 57 movement about the Y-Y axis. Specification 203,373, [Class 120 (iii)], is referred to.
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