Help please.
I am working on a project right now and need a photograph of an installed (in service) dual control switch machine. By this I mean the electric motor operated unit installed near the facing points end of a switch/turnout that actually moves a pair of switch points to their respective stationery stock rails. Prototype photos only, no Lionel, Atlas, American Flyer or the like, please.
Switch machines are most commonly found in centralized traffic control territory and they allow a train dispatcher to align crossovers between adjacent tracks or to align trains in and out of sidings.
The “dual control” nature has to do with their design: when the selector lever is placed in “motor,” the train dispatcher or control operator can align the switch points back and forth by turning a control panel lever and pressing a button. By placing the selector lever in “hand,” the electric motor is disengaged and the points can be moved back and forth by means of a hand throw lever attached to the switch machine.
A picture or URL address will be most welcomed.
Thanks!