Machine element or mechanism – Escapements
Patent
1975-06-02
1976-11-23
Herrmann, Allan D.
Machine element or mechanism
Escapements
74142, 58116R, F16H 2702, G04B 1514
Patent
active
039929540
ABSTRACT:
A mechanism with two moving parts to act as a 120.degree. indexing or escapement drive using a rotating member and a pivoting arm which are shaped to act together with a closely defined geometric relationship. As an escapement, a wheel, provided with three acting points or pins, will have a 120.degree. escapement motion for each oscillating cycle of a pivoting escapement arm. As an indexing drive, the same basic parts, aided by drive and backup means, will act in reverse: the oscillating pivoting arm is driving or indexing the wheel 120.degree. per each oscillating cycle wherein the driven angle per each half cycle of oscillation could vary between an equal 60.degree.-60.degree. proportion and the other extreme of a 120.degree.-0.degree. proportion. The positive tie-in of the wheel and pivoting arm throughout the full oscillating cycle permits the use of the mechanism in either direction as an escapement or indexing drive or a combination of both.
REFERENCES:
patent: 2900021 (1959-08-01), Richtmyer et al.
patent: 2907167 (1959-10-01), Olsen
patent: 3186238 (1965-06-01), Archer et al.
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