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4 Matching Results
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Milking Device
Patent for a portable milking device for cows. Illustrations included.
Date:
April 30, 1912
Creator:
Lévay, Ellis
System:
The Portal to Texas History
Electric Switch For Street-Railways.
Patent for an electric switch for street railways. This invention allows for the operation of switches of the track from the car, so the operator can turn the switches without stopping the car.
Date:
January 30, 1906
Creator:
Posey, James A.
System:
The Portal to Texas History
Burglar-Alarm.
Patent for a burglar alarm device that is triggered by the movement of a door or window, including illustrations.
Date:
October 30, 1917
Creator:
Alderman, Joseph S.
System:
The Portal to Texas History
Silo.
Patent for an improvement of a silo that includes a sliding door, including illustrations.
Date:
May 30, 1916
Creator:
Barker, Judge F.
System:
The Portal to Texas History