Typewriting machines – Including interposed inking device for record-medium – Ribbon-feeding mechanism
Patent
1977-08-18
1978-12-26
Wright, Jr., Ernest T.
Typewriting machines
Including interposed inking device for record-medium
Ribbon-feeding mechanism
400208, 400225, 400226, B41J 3314
Patent
active
041313747
ABSTRACT:
A ribbon feed mechanism for typewriters operable to incrementally feed a ribbon with a dual segment continuous motion ribbon feed. The ribbon is advanced an initial segment by a power actuated linkage and advanced a final segment by a spring urged arm acting on a multi-toothed cam. The initial segment feed occurs when a bellcrank is pivoted, and through a linkage, urges a ribbon metering shaft to rotate which, in turn, feeds the ribbon. Simultaneously, a spring biased cam follower is gradually displaced by the multi-toothed cam which is supported on the metering shaft. The final segment feed occurs as the spring biased cam follower is rapidly displaced down a cam surface of a tooth on the multi-toothed cam.
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Greb Kenneth W.
SCM Corporation
Weinberger Ernest F.
Wolson Milton M.
Wright, Jr. Ernest T.
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