Two-stage cylinder for automatic application and release of a hand brake of a railway vehicle

Two-stage cylinder for automatic application and release of a hand brake of a railway vehicle

An apparatus engageable with a hand brake assembly for automatically applying at least one brake secured to a railway vehicle. The apparatus comprises an operating mechanism which is a two stage pneumatic cylinder having a primary portion for initial phase of the brake application and a secondary po...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: SOMMERFELD, HOWARD R
Format: Patent
Sprache:eng
Schlagworte:
ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL
ARRANGEMENTS OR DISPOSITIONS OF BRAKES OR OTHER RETARDINGAPPARATUS IN RAIL VEHICLES
BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL
BRAKES OR OTHER RETARDING APPARATUS PECULIAR TO RAILVEHICLES
PERFORMING OPERATIONS
PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES
RAILWAYS
TRANSPORTING
VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF
VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:An apparatus engageable with a hand brake assembly for automatically applying at least one brake secured to a railway vehicle. The apparatus comprises an operating mechanism which is a two stage pneumatic cylinder having a primary portion for initial phase of the brake application and a secondary portion for the final brake application to apply high forces and to comply with AAR requirements. A source of fluid pressure is connected to the operating mechanism for periodically supplying a predetermined pressure thereto. A first control device is connected to the source of the fluid pressure for initiating the supply of such predetermined pressure to the operating mechanism. A second control device is connected to the source of the fluid pressure for regulating the supply of such predetermined pressure to the operating mechanism thereby causing an automatic application of such brake by the hand brake assembly.