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:
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