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Wrench.

Description: Patent for a new ratchet-wrench with "improved construction and combination of parts" (lines 26-27), including illustrations.
Date: February 2, 1886
Creator: Rettberg, Ernest Frederick & Ellis, Charles Carroll
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Gas-Vent for Molds.

Description: Patent for a gas-vent for molds. Its object is "to provide a simple and cheap construction whereby free escape of the gas or air is permitted form the mold into which molten metals...are to be poured for the purpose of forming a casting" (lines 12-18). Construction of the vent may vary.
Date: February 2, 1897
Creator: Streetman, Willard
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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