Railway points stock or running rail fastener - has hump with slight play between chair bottom hump and rail foot under chair or clamping loop

摘要

The sliding chair or support block rests on an underlay plate for the rail in points. There is a clamping plate or loop on the outside of the rail foot and a U-shaped spring loop to hold the foot down. The spring's shank ends, are secured by catching on deformations in the chair. - In the gap (22') between the humped deformation (21'), in the passage under the chair and the inside of the rail foot (2) there is another humped deformation. This deformation may be on the underside of the chair cover (8) or on the clamping loop (17). Under normal loop tension, this has slight play (26) in relation to the top of the loop and/or to the plane of support on the chair.(1/8)