Typewriting machines – Including type-set-assemblage mounted on carrier and... – Including type-faces movable relative to type-face-carrier
Patent
1986-05-23
1988-05-31
Pearson, Charles A.
Typewriting machines
Including type-set-assemblage mounted on carrier and...
Including type-faces movable relative to type-face-carrier
4001544, B41J 106, B41J 126
Patent
active
047477083
ABSTRACT:
The selector device for a character-carrying element of a printing machine comprises a d.c. electric motor whose rotor is capable of selectively rotating in both rotational directions a coupling arrangement comprising a pinion on the motor shaft and a gear on the shaft which carries the hub for mounting a daisywheel printing element and a strobe disc which provides the position signals used to control character selection. A device for taking up clearances minimizes the radial clearances between the pinion and the gear. Thus the motor is mounted on trunnions and urged by a spring to tilt in the sense urging the pinion into the gear.
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Design of Machine Elements 5th ed. Prentice Hall, Englewood Cliff, NJ 1978 by Spotts, pp. 433-434.
Product Engineering Oct. 26, 1959, pp. 71-75, "18 Ways to Control Backlash in Gearing" by Gutmann.
Machinery's Handbook 20th ed. Industrial Press, NY, NY 1978 by Oberg et al., p. 611.
Ing. C. Olivetti & C. S.p.A.
Pearson Charles A.
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