2 Matching Results

Search Results

Results: 1 - 2

Wagon Coupling

Description: Patent for wagon coupling. Illustration included.
Date: June 14, 1904
Creator: Keene, Charles Earnest
Partner: UNT Libraries Government Documents Department

Protractor.

Description: Patent for a new and improved protractor. This design "is to make a protractor or plotter by which may be calculated the length of the base, perpendicular, and hypotenuse of a right-angled triangle where the latitude and departure or the altitude and depression are given" (lines 15-20). To this end, it consists, "with the semicircular protractor provided with a rectangular opening the edges of which are graduated, and centrally-pivoted vernier, of the departure-scale arranged to move up or down… more
Date: June 10, 1890
Creator: Dolman, John H.
Partner: UNT Libraries Government Documents Department
Back to Top of Screen