Typewriting machines – Including interposed inking device for record-medium – Ribbon-reversing mechanism
Patent
1978-06-02
1980-12-30
Wright, Jr., Ernest T.
Typewriting machines
Including interposed inking device for record-medium
Ribbon-reversing mechanism
400229, 400232, 400233, 4002361, B41J 3340
Patent
active
042420059
ABSTRACT:
The present invention is an improved pawl for use in combination with an inked ribbon advance and reverse mechanism which includes a plate member, a pair of ribbon spools which are disposed on the surface of the plate member and are mechanically coupled thereto so that they can rotate bidirectionally, a pair of ratchet wheels, each having teeth disposed in an opposite direction and each being mechanically coupled to one of the pair of ribbon spools, and a mounting device for mechanically coupling the improved pawl to the plate member. The improved pawl includes an elongated member having a pair of ends, each end having a plurality of teeth which are disposed along the surface of the elongated member that mechanically engages one of the ratchet wheels. The elongated member is pivotally coupled to the mounting device which includes a pivot pin which mechanically couples the elongated member to the mounting device by means of a pair of springs. The mounting device is a sliding member which is mechanically coupled to the pivot pin with the improved pawl being coupled to the plate member through the sliding member and a coupling device for slidably coupling the sliding member to the plate member so that the sliding member can move differentially in parallel juxtaposition to the plate member and the ribbon spools.
REFERENCES:
patent: 940814 (1909-11-01), Kuntzler
patent: 1127931 (1915-02-01), Smith
patent: 2978090 (1961-04-01), Brandt
patent: 3677486 (1972-07-01), Findlay
patent: 3825103 (1974-07-01), Riley
patent: 3855448 (1974-12-01), Hanagata et al.
patent: 3880271 (1975-04-01), Hebron
patent: 3986594 (1976-10-01), Kondur, Jr.
patent: 4004671 (1977-01-01), Kondur, Jr.
patent: 4062436 (1977-12-01), Kondur, Jr. et al.
patent: 4070963 (1978-01-01), Weaver
C. Itoh Electronics, Inc.
Johansen W. Edward
Wright, Jr. Ernest T.
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