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3 Matching Results
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Latch.
Patent for a latch for swinging doors, which can be operated from either side of the door.
Date:
May 18, 1909
Creator:
Lewis, Oliver
System:
The Portal to Texas History
Relay.
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.
System:
The Portal to Texas History
Fumigator.
Patent for a fumigator for driving out flies or mosquitoes from rooms with kerosene gas.
Date:
May 25, 1909
Creator:
Hauck, Jacob
System:
The Portal to Texas History