GB730544A - Improvements in and relating to machines for spinning natural and artificial silk - Google Patents

Abstract

730,544. Toothed gearing. SCRAGG & SONS, Ltd., E., and DAVENPORT, A. April 24, 1953 [Feb. 29, 1952], No. 5336/52. Class 80 (1). [Also in Group IX] Mechanism for driving the roller shaft of " uptwisters " comprises an input shaft adapted to be driven at constant speed, an output shafts in axial alignment therewith, the drive being transmitted from the input shaft to the output shaft by gearing including two planet gear wheels which mesh with one another and with sun wheels mounted on the input and output shafts respectively, and means actuated by the input shaft for oscillating or rocking the planet wheels around the sun wheels so that a varying drive is imparted to the output shaft. As shown a main machine shaft 10 drives through suitable change-speed gearing (not shown), input shaft 11 having a pinion 12 which meshes with a spur wheel 13 on shaft 14. This shaft carries, eccentrically, an arm 15 which is pivotally connected by pin 16 to an arm 17 projecting from a sleeve 18 rotatably mounted on the input shaft 11 by bushes 19, 19. The sleeve 18 is connected to a gear case 20 which is freely journalled on the output shaft 21 through bush 22. The gear casing 20 carries, on stub axles 25 and 27, planet wheels 24 and 26 which mesh with each other and with sun wheels 23 and 28 respectively on the ends of the input and output shafts. Thus in operation rotation of the input shaft will, through gears 23, 24, 26 and 28, rotate the output shaft in opposite direction and by reason of the oscillatory or rocking motion imparted to the gear case 20 through the sleeve 18 the planet wheels will be rocked around the sun wheels and the rotation of the output shaft 21 will be variable. Specification 647,891, [Group IX], is referred to.