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4 Matching Results
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Can-Opener.
Patent for new and useful improvements for can openers. The principal purpose is to provide means for opening round cans of different sizes and also square cans.
Date:
November 16, 1920
Creator:
Adels, Rebecca Valencia.
System:
The Portal to Texas History
Engineer's Safety-Throttle for Locomotive Dry Pipes
Patent for improved safety mechanism for the dry pipe of a steam-powered locomotive engine.
Date:
November 16, 1920
Creator:
Hartman, John Wesley
System:
The Portal to Texas History
Oil and Gas Burner
Patent for a burner that can use both oil and gas as fuel.
Date:
May 16, 1922
Creator:
Oney, William M.
System:
The Portal to Texas History
Signal-Light.
Patent for "new and useful improvements in Signal-Lights." (lines 5-6) and "relates to improvements in signaling means." (lines 8-9) including illustrations.
Date:
March 16, 1920
Creator:
Thomas, Theodore G.
System:
The Portal to Texas History