Posted 11 years ago
Chuckie
(5 items)
Standard interlocking bell crossing relay. Dated late 1800's - early 1900's. No patent date. Haven't finished research on this, but what we've found so far it was one of the precursors or in cunjunction with the fail-safe circuit. Any links or information would be highly appreciated. Still trying to date this. Anyone have any information about the early days of The Railroad Supply Co.?
