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Submarine-Destroyer.
Patent for submarine destroyer that is a projectile of the harpoon type adapted to be dropped from an aeroplane with the purpose to destroy a submarine or other vessel.
Date:
November 27, 1917
Creator:
Garner, William W.
System:
The Portal to Texas History
Heater.
Patent for a heater, "designed for use in orchards for raising the temperature of the atmosphere at times when frosts or freezing temperature is threatened" (lines 11-14). Illustration included.
Date:
November 18, 1919
Creator:
Briscoe, Williard H.
System:
The Portal to Texas History
Dredge.
Patent for an excavating machine specifically designed for canal digging, that "is an improvement upon a patent granted to Charles S. Butterfield, March 13, 197 and numbered 1,219,371" (lines 10-13). This invention provides a means for firm and stable support of the excavating machine and allows the position of the machine to be easily changed as the work progresses.
Date:
November 22, 1921
Creator:
Evans, Marvin
System:
The Portal to Texas History