UNT Libraries Government Documents Department - 4 Matching Results

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Arc-Lamp Attachment

Description: Patent for improving arc lamp attachments. The attachment allows an arc lamp to be able to use an incandescent lamp in place of the electrodes in an arc lamp. The attachment increases the efficiency and durability of the arc lamp.
Date: April 2, 1918
Creator: Pratt, James R.

Nut Lock

Description: Patent for device locks a nut to the threaded portion of a bolt.
Date: January 2, 1917
Creator: Blackwelder, Charlie A.

Oil-Burner.

Description: Patent for an improved oil burner design "for use where high efficiency and greatest economy are desired in burning low grade oil" (lines 14-16), such as coal and crude oil. Includes illustrations.
Date: November 2, 1915
Creator: Wright, John F.
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