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Railway-Switch Stand.
Patent for a railway switch stand that locks "a switch of this class and from which the lock cannot be removed except when the switch is fully locked, thus obviating accidents by always insuring a locked condition of the switch after operation and thereby preventing the switch from being subsequently actuated by unauthorized persons" (lines 11-20), including illustrations.
Date:
May 16, 1916
Creator:
Berger, James H. & Rosson, George T.
System:
The Portal to Texas History