2 Matching Results

Search Results

Results: 1 - 2

Thermostatic Fire-Extinguishing Device

Description: Patent for a thermostatic fire-extinguishing device that improves the efficiency and operation of thermostatic fire-extinguishers.
Date: June 22, 1915
Creator: Hooks, J. J.
Partner: UNT Libraries Government Documents Department

Dredge.

Description: 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
Partner: UNT Libraries Government Documents Department
Back to Top of Screen