Brakes – Vehicle – Railway
Patent
1989-10-13
1992-08-25
Butler, Douglas C.
Brakes
Vehicle
Railway
74505, 74506, 188 33, 188 52, 188107, 188198, B61H 1300
Patent
active
RE0340405
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.
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Butler Douglas C.
Gunderson, Inc.
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