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52 Matching Results
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52
Automobile-Windlass
Patent for improved windlass for an automobile that attaches to both rear wheels to prevent idling
Date:
April 20, 1920
Creator:
Davis, Marion A.
Object Type:
Patent
System:
The Portal to Texas History
Automatic Signal-Actuating Mechanism for Railways
Patent for an improved signal actuating mechanisms for railways. When the train cars reach an operating mechanism, a flag will be raised where pedestrians or cars cross, and cause a signal to be repeated until the train passes.
Date:
July 20, 1920
Creator:
Bashara, Samuel Farris
Object Type:
Patent
System:
The Portal to Texas History
Automatic Trough-Valve.
Patent for improvements in animal watering troughs that has an automatic float control valve in connection with the trough.
Date:
July 20, 1920
Creator:
Striegler, Fritz
Object Type:
Patent
System:
The Portal to Texas History
Book-Holding Device
Patent for a book-holding device that will keep books open by holding back turned pages, with illustrations.
Date:
April 20, 1920
Creator:
Barry, David Redmond
Object Type:
Patent
System:
The Portal to Texas History