Automatic function mechanism for typewriters

Details Automatic function mechanism for typewriters Automatic function mechanism for typewriters

B - Operations, Transporting

41

J

197/106, 197/109

B41J 19/62 (2006.01) B41J 29/36 (2006.01) B41J 31/10 (2006.01) B41J 33/02 (2006.01)

Patent

CA 1050463

AUTOMATIC FUNCTION MECHANISM FOR TYPEWRITERS ABSTRACT OF THE DISCLOSURE A method and mechanism for automatically performing typewriter functions such as backspacing a carriage, The backspace mechanism is actuated by the insertion and removal of a ribbon cartridge that is placed on and guided by a ribbon cartridge platform and is especially suited for use in conjunc- tion with the correction of erroneously typed characters. The ribbon cartridge carries a pair of cam surfaces that engage a pair of typewriter backspace coupled cam surfaces to actuate a backspace function upon insertion and again upon removal of the ribbon cartridge. Therefore, automatic multiple back- spacing of the typewriter carriage occurs when performing an error correcting operation simply by inserting and removing a correction ribbon cartridge. Although a backspace function has been selected for purposes of demonstration, the here- after disclosed embodiment may be utilized to actuate other typewriter functions upon the insertion and removal of the ribbon cartridge.

254279

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