Assembly for moving printing means of a printing machine

Details Assembly for moving printing means of a printing machine Assembly for moving printing means of a printing machine

1980-05-05

1982-09-14

Burr, Edgar S.

Typewriting machines

Carriage or carriage-moving or movement-regulating mechanism

Carriage-feed mechanism

744248R, 400328, B41J 2528

Patent

active

043492843

ABSTRACT:
A printing office machine in which a movable print head is driven by a device comprising a fixed, mounted lead screw and a cooperating nut member connected to an electric motor. The nut member is rotatably mounted in a carrier frame and comprises an inner tubular member which is journalled on the lead screw. An outer tubular member is journalled on the inner tubular member. An end part of the outer tubular member bears against a flange on the inner tubular member under friction. The two members are turnably interconnected by spring means, and the free ends of the members support rotatable bearings which bear on flanks of grooves cut in the lead screw. Each bearing cooperates with the groove flank which faces the respective end of the tubular member. The drive device has a very great freedom from play, and at the same time the friction prevailing between the nut member and the lead screw is minimized.

REFERENCES:
patent: 3479897 (1969-11-01), Holthofer
patent: 3670583 (1972-06-01), Leming
patent: 3720116 (1973-03-01), Better et al.
patent: 3974709 (1976-08-01), Janson et al.
patent: 4019616 (1977-04-01), Thorne
IBM Technical Disclosure Bulletin-Bernard & Meier: vol. 20, No. 2, Jul. 1977, "Carrier Support Device", pp. 567-568.

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