Antique Patent Model Railroad Safety Switch Lock with Documents by Hall anchored duck decoy Top drawers (x26): 14

Top drawers (x26): 14

Features two propeller blades set in a large steel frame

10" W x 13" H

(Ajusco) - Milwaukee

providing both utility and constant brand visibility

Antique Patent Model Railroad Safety Switch Lock with Documents by Hall anchored duck decoy Top drawers (x26): 14Patent dated September 7, 1926; Hall Signal Co. Garwood, NJ Wooden presentation case containing a patent model of the Hall Safety Switch Lock, an invention designed to improve railway safety by preventing misaligned or unauthorized switching. The model is built into the base of the case, with mounted wood and metal track sections demonstrating the locking mechanism in practical application. Included with the set are original explanatory pamphlets