perfected for selecting three or more po-sions on typewriters mechanism.

摘要

1306202 Typewriters MESSA-MAQUINAS DE ESCREVER SARL 18 Jan 1971 [2 Feb 1970] 2363/71 Heading B6F Positioning mechanism for typewriters comprises a key 1 which on repeated depression rotates stepwise a disc 6 through engagement of a ratchet tooth 2A with pins I-IV, and thereby moves a crank lever 4 so that its free end takes up successively different positions 1-4.