Tow cart safety mechanism

Details Tow cart safety mechanism Tow cart safety mechanism

1975-02-21

1976-08-10

Spar, Robert J.

Railways

Traction

Chain

B61B 1312

Patent

active

039735036

ABSTRACT:
A tow cart is provided with an arrangement in which the tow or drive pin is adapted to be moved out of engagement with the conveyor drive, in response to a predetermined degree of obstruction to the tow cart, by a spring-loaded overcenter double toggle movable from a cocked to a released position in response to the obstruction, and in which the drive pin is pivotally supported so that it may swing forwardly away from the conveyor drive upon the release. In the cocked position of the toggle mechanism the mechanism restrains the forward pivotal movement of the drive pin.

REFERENCES:
patent: 1498099 (1924-06-01), Howland-Shearman
patent: 3106172 (1963-10-01), Robbins et al.
patent: 3659530 (1972-05-01), Klamp
patent: 3789767 (1974-02-01), Krammer
patent: 3824930 (1974-07-01), Biessener
patent: 3844183 (1974-10-01), Wilke

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