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Hat-Pin Point Protector

Description: This patent is for the device that is to be used for protecting the point of the hat pin, and the invention aims to improve the operative connection between the compartmental members which shield and grip the point of the pin.
Date: April 9, 1918
Creator: Koch, Charles Albert
Partner: UNT Libraries Government Documents Department

Piston-Head

Description: This patent relates to piston heads particularly designed for use in connection with a hydrocarbon engine. The purpose of this invention is to provide a novel form of a ball and socket connection between the piston rod and the piston head. The said connection is designed to be durable in construction , cheap to manufacture and easily applied.
Date: April 9, 1918
Creator: Collier, William Reid
Partner: UNT Libraries Government Documents Department
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