Stair Tower Signal system
Interlocking mechanism in place below the upper floor
Conduits installed for remote relay cases and other appliances
Remote relay case set at Signal 1
Starting a semaphore signal restoration
Levers in and mostly painted
Time release and approach bell cabinet installed
First high signal put up was No.1, the former B&O Color Position Light
Relay shelving in the lower level of the tower takes shape
Semaphore motor restoration continues...
After Signal #15 was up, attention turned to Signal #14. See next image for legend of signals.
The model board for the signals is in place, but no lights in it yet.
On the white board are "tappet circuit controllers" that convert lever action into electrical switching
Signals #14 and #15 are complete here in early 2017
Before the reconditioned semaphores could be placed in service, a test bed to exercise them was created
Next to last tall signal to go up was the semaphore at Signal #16. Here, the lower head is being hung
The semaphore mast was a little short for the top head. Nothing that an expert welder can't fix!
Last signal to be put up was #2, on the IT side. It follows the IT practice of red on top.
In mid-2017, the relay wiring commenced. It was a huge project to get ready for RR Days that year
The back of the board that holds the tappet circuit controllers. The silver pipes go up to the levers.
Here is #6789 passing the completed semaphore at Signal #16. The lights are working now.
"Clear" inidcation on Signal #14.
"Restricting" on Signal #15.
The system was working for RR days in 2017. Here is the model board on a day after that event.
The levers pulled here are for a northbound on the Central Sub and a southbound on the Terminal.
The operator's desk looks a little too modern with the laptop.
Because there were no track circuits in the beginning, an "OS simulation" box was built.