The National Track Mechanical Switchman converts the ordinary hand throw split switch into an automatic or spring switch thereby permitting trailing movements without stopping to throw the switch. It is used on passing sidings, departure ends of yard tracks, ends of double track, and approaches to bridges.
Self contained unit combining the spring head and oil buffer into a single unit
Switch points can be thrown manually with no resistance
Designed to permit trailing from either track
Switch points return to their normal position in 10-12 seconds with a 4 3/4" head rod