Bi-directional, constant velocity, carriage shuttling mechanisms

Details Bi-directional, constant velocity, carriage shuttling mechanisms Bi-directional, constant velocity, carriage shuttling mechanisms

1980-07-17

1983-06-14

Wright, Jr., Ernest T.

Printing

Selective or progressive

Bed and platen machines

400124, B41J 508

Patent

active

043876420

ABSTRACT:
Bi-directional, constant velocity, carriage shuttling mechanisms particularly suitable for use in dot matrix line printers, are disclosed. The carriage shuttling mechanisms comprise a pair of identically sized bi-lobed, second order elliptical gears (41, 45) connected together in a 90.degree. phase relationship either directly or via a belt. One of the bi-lobed gears is rotated at a constant velocity and the other is eccentrically linked (47) to the carriage (11) to be bi-directionally shuttled at a constant velocity.

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Osbert H. Nichols "The Design of Elliptical Wheels for a Constant Speed Reciprocating Motion-II" Machinery, Sep. 22, 1921, pp. 754-756.
Theodore Bernett, "Elliptical Gears for Irregular Motion" Mechanical Engineering, Jun. 1967, pp. 33-39.
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