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Power Fan.
Patent for a new and improved power fan. This design consists in "the combination of the slowly-revolving spring-barrel and the toothed gearing, the pitman-rod operated from the revolving gearing by a crank, the fan-lever connected to the pitman-rod, a weight sliding upon the fan-lever, and a ratchet mechanism for automatically raising the sliding weight" (lines 78-84).
Date:
January 10, 1888
Creator:
Mason, James Alexander; Mulkey, Elijah F. & Houston, George W.
System:
The Portal to Texas History
Safety Step for Freight Cars
Patent for a safety step for freight rail cars. Illustration included.
Date:
January 10, 1911
Creator:
Neale, Ancel C.
System:
The Portal to Texas History