Textiles: fiber preparation
Patent
1975-06-26
1976-10-05
Burr, Edgar S.
Textiles: fiber preparation
74 57, 197 55, B41J 160, B41J 2314, F16H 2514
Patent
active
039839842
ABSTRACT:
A selection mechanism is disclosed which greatly simplifies the selection controls for a single element typewriter and thereby adapts it for inexpensive manufacture and reliable operation. A single continuous groove in the cylindrical periphery of a rotating shaft provides a universal surface similar to a cam surface to translate a follower member in a coaxial direction with respect to the rotating shaft and thus provide a linear movement which may be controlled in displacement and thus provide a defined or controlled input which in turn may be converted to a rotary motion for the typehead. The follower block is prevented from traversing any further than that distance which is desired and the follower is relieved by a spring bias member to allow it to ride out of the groove and thus allow the follower block to only traverse as far as permitted for a particular character selection.
REFERENCES:
patent: 2502761 (1950-04-01), Stachowiak et al.
patent: 2539921 (1951-01-01), Neisingh
patent: 3625331 (1971-12-01), Waldenburger et al.
patent: 3696682 (1972-10-01), Matas
patent: 3885662 (1975-05-01), Schaefer
patent: 3892304 (1975-07-01), Sakib
Burr Edgar S.
International Business Machines - Corporation
Letson Laurence R.
Sewell Paul T.
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