Gradual release mechanism for a railway car hand brake

Details Gradual release mechanism for a railway car hand brake Gradual release mechanism for a railway car hand brake

B - Operations, Transporting

61

H

B61H 13/02 (2006.01) B61H 13/04 (2006.01)

Patent

CA 2345279

A gradual release mechanism for use in a hand brake device engageable with a railway car. Such gradual release mechanism comprising an operating shaft for rotation about an axis extending longitudinally of the shaft. A clutch flange portion disposed intermediate both ends of shaft, the clutch flange having a clutch surface. A sleeve concentrically disposed and threadedly mounted on the shaft for rotational movement therewith, the sleeve having a clutch surface opposed to the clutch surface of the clutch flange portion of the shaft. An externally threaded surface on the operating shaft engageable with an internally threaded surface on the sleeve, the threads having a pitch between about .60 inch and about 1.00 inch. A ratchet wheel received about the shaft, such ratchet wheel having oppositely disposed clutch surfaces positioned for engagement by the clutch collar portions respectively. A pinion journaled on the shaft and adjacent the sleeve.

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