Typewriting machines – Including type-set-assemblage mounted on carrier and... – Including type-faces movable relative to type-face-carrier
Patent
1987-12-14
1989-02-21
Wiecking, David A.
Typewriting machines
Including type-set-assemblage mounted on carrier and...
Including type-faces movable relative to type-face-carrier
400697, 400212, B41J 130
Patent
active
048060305
ABSTRACT:
The correction device is applied to an electronic typewriter with a daisywheel and comprising an electric selector motor which selectively rotates the character-carrying daisywheel in the clockwise and the anti-clockwise directions for selecting the characters to be typed and/or corrected, a carrier for a correcting ribbon and a control member for lifting the carrier and permitting correction of the typed characters. A small correcting solenoid can be activated to couple the control member of the correcting ribbon to the selector motor. The control unit controls the motor and the solenoid in such a way that the selector motor can also actuate the control member in each correction cycle for positioning the correcting ribbon in front of the typing point. In the illustrated form, the solenoid unlatches a lever which drops to bring the control member into mesh with a gear on the motor shaft. The control gear is eccentrically mounted on the lever and a first 180.degree. revolution, corresponding to 360.degree. revolution of the daisywheel raises the lever and carrier to correcting ribbon height which a subsequent 180.degree. rotation drops the carrier back to typing ribbon height with the lever latched by the solenoid armature.
REFERENCES:
patent: 4239400 (1980-12-01), Giolitti
patent: 4353655 (1982-10-01), Watanabe et al.
patent: 4390293 (1983-06-01), Gubau et al.
patent: 4472073 (1984-09-01), Valle et al.
patent: 4605324 (1986-08-01), Musso
Bonmassari Gianpaolo
Gillio Claudio
Quaranti Giovanni
Ing. C. Olivetti & C. S.p.A.
Wiecking David A.
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