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Combined Ruler and Blotter
Patent for a combined ruler and blotter (used for writing with ink). Proposed improvement of basic design by being more compact, cheaper to make, and includes a way to tear paper along the ruler's edge.
Date:
July 28, 1914
Creator:
Schmidt, Edward
System:
The Portal to Texas History
Gas-Producer.
Patent for an improvement to a gas producing apparatus which makes gas continuously from "combustible material mixed with air and the subsequent combination of gases formed by the decomposition" (lines 13-15) of resulting gases, including instructions and illustrations.
Date:
April 28, 1914
Creator:
Hirt, Jules H.
System:
The Portal to Texas History