Mechanism and Work of Kureha's Auto-Doffer

To trace the development of a full-automatic auto-doffer simple in mechanism and usuable in conventional spinning mills. The Doffer (1)The mechanism used is of an intermittent-movement and multi-spindle doffing system. (2) The width of the doffer is 189mm. (3) Conventional ring frames and buildings may be used if there is a space of more than 300mm between the gear-end side (or out-end side) of a ring frame and a pillar. (4) One person can move the auto-doffer if an auto-doffer carrier is used. (5) The rails for the auto-doffer carrier need not be laid on the floor. (6) The doffing time per cycle is about 8sec/10sps. (7) The end-breakage rate for 10 ring frames as of June 1965 is about 2.5%.