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Automatic Electric Switch
Patent for an automatic electric switch. This invention consists of a series of switches and a rotary switch run by electromagnetic key operating motor. Illustration included.
Date:
December 15, 1903
Creator:
Guthrie, William S.
System:
The Portal to Texas History
Valve Operating Mechanism for Presses
Patent for a valve operating mechanism for presses. This invention is meant to be an improvement of baling mechanism effecting the automatic regulation and control the motor fluids. Illustrations included.
Date:
December 29, 1903
Creator:
Stuart, John Marcus
System:
The Portal to Texas History
Fire Alarm
Patent for a fire alarm. Illustration included.
Date:
December 28, 1909
Creator:
Andrews, Bolivar C.
System:
The Portal to Texas History
Massage-Machine
Patent for a massage machine which uses air pressure to perform massages. Illustrations included.
Date:
December 29, 1908
Creator:
Davenport, Walter D.
System:
The Portal to Texas History