Typewriting machines – Typing by other than type-face or type-die – Character formation by impact
Patent
1977-10-28
1980-04-01
Wright, Jr., Ernest T.
Typewriting machines
Typing by other than type-face or type-die
Character formation by impact
400119, 400613, 400636, 400641, 400658, 400694, 346162, G01D 1518
Patent
active
041959361
ABSTRACT:
This invention provides improved means for automatically retracting the styli away from the paper when the rotational speed of the rotor drops below a predetermined minimum level. Improved means also are provided for stably holding and accurately positioning the styli during printing. In addition, simple means are provided for adjusting the axial position of the styli to ensure proper character spacing. A snap-on housing protects the rotor and the retracted styli and allows the rotor and styli to be removed easily from the rotary printer as a single enclosed unit. An improved latch is provided for locking the rotor in one place on the drive shaft, but allowing the rotor to be removed relatively easily. The platen has a slight inclined area or ramp at the leading edge of the recording paper. The ramp smooths the travel of the styli on to the paper and increases the area of the paper which can be used for printing.
REFERENCES:
patent: 2821284 (1958-01-01), Garwood et al.
patent: 2825621 (1958-03-01), Alexander
patent: 3091321 (1963-05-01), Ashworth
patent: 3816839 (1974-06-01), Honda et al.
patent: 3854563 (1974-12-01), Cowardin et al.
patent: 3997903 (1976-12-01), Kelch et al.
patent: 3998315 (1976-12-01), Phillips
patent: 4022311 (1977-05-01), Krull
patent: 4032930 (1977-06-01), Tauszig
Gard Leslie H.
Phillips Darwin E.
SCI Systems Inc.
Wright, Jr. Ernest T.
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