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Bearing for Crank-Shafts.

Description: Patent for an improvement for Bearings for Cranks Shafts. This invention provides a means for "tightening the bushings of the bearings easily and quickly when necessary" (lines 9-13).
Date: October 22, 1918
Creator: Blumberg, Hamilton G.
Partner: UNT Libraries Government Documents Department

Submarine Telescope.

Description: Patent for submarine telescope using a pair of longitudinal tubes, mounted lens, rigid rods, electric light bulb, and chains for securing to the boat. Intended as useful improvements to submarine telescopes with the objection to assist in locating submerged objects. Accompanied with illustrations.
Date: April 22, 1919
Creator: Armstrong, William S.
Partner: UNT Libraries Government Documents Department
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