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Latch.

Description: Patent for a latch for swinging doors, which can be operated from either side of the door.
Date: May 18, 1909
Creator: Lewis, Oliver
Partner: UNT Libraries Government Documents Department

Relay.

Description: Patent for an electric relay "which is normally actuated by weak currents, and adapted when abnormally energized by heavier currents to shift the local current from one connection to another in order to prevent the relay armature from sticking" (lines 10-15).
Date: May 18, 1909
Creator: Rice, Hugh C.
Partner: UNT Libraries Government Documents Department

Car Replacer

Description: Patent for a car replacer. This invention is designed for the replacement of derailed locomotives, cars, and stock pens to the rails. Illustration included.
Date: June 18, 1907
Creator: Bowman, James M.
Partner: UNT Libraries Government Documents Department
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