Tamper is described that operates both on and off track and is used to raise switches on line being upgraded on New York Central; with jacks in retracted position tamper has width of 8 ft; travel speed is 23 mph, either on or off track; control of jacking is by beam passing through slotted mask mounted on machine.
New on/off-track machine speeds turnout tamping
Ry Track Structures
Railway Track and Structures ; 64 , n 3
1968
2 pages
Article (Journal)
English
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