Handbrake operating linkage for multi-unit rail cars

Details Handbrake operating linkage for multi-unit rail cars Handbrake operating linkage for multi-unit rail cars

1987-12-15

1989-02-21

Butler, Douglas C.

Brakes

Vehicle

Railway

188 52, 188107, 188198, B61H 1300

Patent

active

048057436

ABSTRACT:
An improved single manual brake operating system for connecting the brake equipment of a plurality of wheeled railroad freight car trucks. The system provides for initial rapid takeup of slack in the linkages interconnecting the braking mechanisms for several trucks and thereafter supplies force with a greater mechanical advantage as the brake shoes are forced against the wheels of the railway car. This variably applied take-up force is accomplished using a system of noncircular sheaves to which flexible portions of the handbrake operating linkage are attached in such a manner that initial rotation of the take-up sheave is accomplished through a relatively long effective axis of rotation of the sheave and thereafter through a shorter effective axis of rotation.

REFERENCES:
patent: 1929767 (1933-10-01), Baselt
patent: 2762459 (1956-09-01), Flowers
patent: 3294035 (1966-12-01), Enochian
patent: 4312428 (1982-01-01), Beacon
patent: 4346790 (1982-08-01), Morrison et al.
patent: 4422532 (1983-12-01), Cordani et al.
patent: 4479567 (1984-10-01), Pearson
patent: 4508197 (1985-04-01), Biegel

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