Variable cam profile selection system for single element typewri

Details Variable cam profile selection system for single element typewri Variable cam profile selection system for single element typewri

1979-04-02

1981-10-27

Wright, Jr., Ernest T.

Typewriting machines

Including type-set-assemblage mounted on carrier and...

Imprint by pivoting of type-head-carrier and type-head...

4001615, B41J 132

Patent

active

042970415

ABSTRACT:
A variable cam profile selection system is disclosed having cams controlling both the tilt and the rotate motion of the single element typewriter. The tilt cam and rotate cam are mounted so that they may be moved with respect to their support to vary the cam rise. The rise of the cam is controlled by interposers under the influence of the keyboard to select or define the amount of movement of the cam member, thereby defining the cam rise. The single cam member for each movement may be positioned in any one of a plurality of positions and, by so doing, correspondingly effect the movement of the cam follower as the cam is rotated about an axis.

REFERENCES:
patent: 2919002 (1959-12-01), Palmer
patent: 3302765 (1967-02-01), Hickerson et al.
patent: 3666070 (1972-05-01), Schaefer
patent: 3885662 (1975-05-01), Schaefer
patent: 3892304 (1975-07-01), Shakib
patent: 3948381 (1976-04-01), McDaniel et al.
patent: 3981386 (1976-09-01), Abell et al.
patent: 3983984 (1976-10-01), de Kler
patent: 4059184 (1977-11-01), Redding et al.
patent: 4094397 (1978-06-01), Hughes
IBM Technical Disclosure Bulletin, "Nonhoming Translating Rack Shift Mechanism", Henderson et al., vol. 18, No. 11, Apr. 1976, pp. 3748-3749.
IBM Technical Disclosure Bulletin, "Very Fine Adjustment of Selection Rack to Pinion", Boyatt et al., vol. 18, No. 11, Apr. 1976, p. 3750.

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