Typewriting machines – Including type-set-assemblage mounted on carrier and... – Including type-faces movable relative to type-face-carrier
Patent
1976-09-10
1978-11-21
Sewell, Paul T.
Typewriting machines
Including type-set-assemblage mounted on carrier and...
Including type-faces movable relative to type-face-carrier
4001443, B41J 130
Patent
active
041264002
ABSTRACT:
Resilient tongues project from a central hub and carry two or more type members. The hub is rotated to a position in which the tongue carrying the desired type member is in a printing position facing a paper supporting platen. The hub is then shifted along the axis of the selected tongue so that the required type member is in a printing position. A drive motor for rotating the hub is connected to the hub by a universal joint to compensate for the shifting of the hub. The universal joint comprises a biased presser member to eliminate lost motion in the rotational direction. A stopper member is provided so that the bending characteristics of the selected tongue are the same no matter which type member is selected. A hammer drives the type member against the paper to print. The resilient tongues are formed of a thermoplastic resin mixed with glass or carbon fibers and the type members may be formed separately from the tongues, fixed thereto and plated with metal. The hub may be formed in two or more sections, with each section carrying some of the resilient tongues. The tongues are bent in such a manner that all of the type members lie in a common plane. The angles between the type members and the tongues are selected in such a manner that all of the type members strike the paper perpendicular to the platen.
REFERENCES:
patent: 932664 (1909-08-01), Yaw
patent: 1090597 (1914-03-01), Busz
patent: 3640369 (1972-02-01), Rolph
patent: 3643774 (1972-02-01), Kondur
patent: 3651915 (1972-03-01), Folkens
patent: 3859712 (1975-01-01), Tramposch
patent: 3884340 (1975-05-01), Tramposch et al.
patent: 3921277 (1975-11-01), Tramposch
patent: 3970186 (1976-07-01), Sohl et al.
Iwata Nobuo
Suzuki Takami
Tsunasawa Masami
Ricoh & Company, Ltd.
Sewell Paul T.
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