Typewriting machines – Including adjustment for optimum printing plane – By adjustment of carriage
Patent
1981-05-28
1983-07-26
Burr, Edgar S.
Typewriting machines
Including adjustment for optimum printing plane
By adjustment of carriage
4001442, 400175, 400320, 400322, B41J 124, B41J 1920, B41J 1120
Patent
active
043951457
ABSTRACT:
A serial printer comprises a carriage 32 movable parallel to a platen 14 and on which there is mounted a printing device 31, for example of the daisy wheel type. The guides 23, 25 on which the carriage slide are mounted on a frame 20 which can turn with respect to the fixed sides of the machine on pivots 16, 17 to allow easy replacement of the daisy wheel. A motor 70 located beneath the roller constituting the platen effects displacement of the carriage along the writing line by means of a steel cable 72 and a series of return pulleys 44, 45, 75, 82. The cable passes through coaxial holes 74, 84 in the pivots of the frame, in such a way that its conditions are not altered when the frame is turned. A unidirectional clutch 86 and a spring 89 coupled to one end 88 of the cable maintain the tension in the cable always constant, while providing a non-yielding anchorage when the motor pulls on that end of the cable.
REFERENCES:
patent: 772057 (1904-11-01), Rice
patent: 3707214 (1972-12-01), Ponzano
patent: 4049109 (1977-09-01), Plaza et al.
patent: 4063630 (1977-12-01), Crowe et al.
patent: 4178106 (1979-12-01), Mailer et al.
patent: 4197022 (1980-04-01), Dollenmayer
patent: 4203680 (1980-05-01), Mitrovich
patent: 4243331 (1981-01-01), Savage et al.
IBM Technical Disclosure Bulletin, vol. 8, No. 10, Mar. 1966, p. 1425, "Cord Tensioning Device" by Abbott et al.
Xerox Disclosure Journal, vol. 4, No. 2, Mar./Apr. 1979, pp. 179-180, "Carriage Design to Eliminate Left Cables" by Kockler.
Becchi Raffaele
Giacone Felice
Ukmar Boris
Burr Edgar S.
Ing. C. Olivetti. & C., S.p.A.
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