Improvements in mechanism for operating movable guides in machines for forming bobbins, pirns, cops or like bodies of yarn or the like

摘要

186,951. Kershaw, G. April 16, 1921. Winding - machines; building - motions.-Relates to mechanism for operating the guides in a winding or like machine. Weights s, Figs. 1 and 2, for lifting the copping-rail a are supported on chains t, which work on barrels u, fixed on shafts f carrying pinions e in engagement with racks d on the poker bars c. A cam y, Fig. 3, working on a bowl z, controls the movements of a copping-lever h, and by means of this lever moves the copping-rail a down and controls its return under the action of the weights s and the tension of the thread &c. A chain v, and a chain-rod-chain combination, w, w1, w, Figs. 1 and 2, couple respectively the barrels u, u and x, g and are arranged so that when the chain w connected to the barrel g is pulled by means of the copping- lever h, all the shafts f will rotate to raise the weights s and lower the copping rail a. A shaft 2 on the lever h, Figs. 2 and 3, carries a ratchet-wheel 1 and a worm 3 engaging with a worm-wheel 4 fast with the barrel g, these devices operating on the movement of the copping-lever h and turning the barrel g, thus allowing the chain w to be unwound, and the weights s gradually to raise the copping-rail a. A handle can be fitted on a square 5 on the shaft 2 to return the barrel g to its initial position, and a stop 4a on the wormwheel 4 is provided to ensure a return to the exact initial position. To lower the copoing-rail, a pedal 6 pivoted on a stud 7, Figs. 1 and 2, is provided and is connected by a chain 8 to a barrel 11 bearing a chain 12 connected to a rod 13 which carries a tappet 14 arranged to act on another tappet 15 on the rod' w1 when the pedal is depressed and to pull down the rail a. The tappets 14, 15 may embrace both rods 13, w1 so that the rod w' carries the rod 13. The rod 13 is connected to one end of a spring 16, supported at its other end by a rod 17, secured to the rod w1 by a tappet 18, while a guide-roller 19 for the chain w connected to the barrel g is mounted on a shaft in a block 20, and a guide pulley 21 is carried by a bracket 22. The disposition of the teppets 14, 15 and the strength of the spring 16 are such that successive upward and downward movements of the rail a do not effect the pedal 6: but each progressive upward movement of the rail c results in a corresponding raising of the pedal. A detent 23 engaging in a hole 24 in the block 9 is provided to hold the machine while yarn is being wound below the bottoms of the bobbins. A modification of the pedal 6 is described in which a hand wheel is arranged to control the motion of the copping-rail a. Specification 142,298 is referred to.