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28
Bottle Stopper.
Patent for a bottle stopper made to be an alternative to cork plugs, including illustrations.
Date:
May 7, 1919
Creator:
Patronel, John
Object Type:
Patent
System:
The Portal to Texas History
Attachment for Adding Machine
Patent for new and useful improvements in attachments for adding machines which both add and list the sums accumulated by the adding machine.
Date:
January 7, 1919
Creator:
Walker, Jack L.
Object Type:
Patent
System:
The Portal to Texas History
Automatic Firing Device for Explosive Shells.
Patent for automatic firing device where "an explosive shell may be caused to travel any distance within the range of the shell through the air without exploding" (lines 14-17).
Date:
January 7, 1919
Creator:
McCombs, Orville K.
Object Type:
Patent
System:
The Portal to Texas History
Automatic Gas Control for Gas Water-Heaters.
Patent for an automatic control for instantaneous water heaters to control a supply of water and simultaneously an automatic supply of gas to the heater.
Date:
October 7, 1919
Creator:
Hamilton, Paul H.
Object Type:
Patent
System:
The Portal to Texas History