Autonomous group for mechanical control of machines

Details Autonomous group for mechanical control of machines Autonomous group for mechanical control of machines

1975-11-24

1977-08-09

Herrmann, Allan D.

192 clutches and power-stop control

Stop mechanism

Overload release

74 54, 200 6118, F16D 7100, B65H 2514, B65H 2532

Patent

active

040405095

ABSTRACT:
Motor rotated cams each actuate a lever and each lever is connected by a flexible non-extensible member, cable or chain, to the element of the machine to be controlled. A spring loaded bell crank lever is provided for each flexible non-extensible member and the non-extensible member passes over a pulley mounted at one end of an arm of the bell crank lever. Each arm of the bell crank lever actuates an electric switch connected to a motor whereby if the tension in the flexible non-extensible member increases or decreases excessively the appropriate one of the switches is opened to stop the motor.

REFERENCES:
patent: 52670 (1866-02-01), Briggs
patent: 404651 (1889-06-01), Paca
patent: 1984641 (1934-12-01), Hargreaves
patent: 2305391 (1942-12-01), Rosenmund
patent: 2457281 (1948-12-01), Shannon
patent: 2649863 (1953-08-01), Francis et al.
patent: 3044052 (1962-07-01), Marsh
patent: 3092696 (1963-06-01), Wallace

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