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in place name: "United States - Texas - Harris County - Houston"  
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Switch-Hook

Description: Patent for a switch lock which prevents "splitting" (line 13). Illustrations included.
Date: January 28, 1908
Creator: Tullock, John Thomas
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Device for Controlling Electric Current.

Description: Patent for an improved device for controlling electric current. The device can control electric current from a generator specifically for the use in automobiles not to exceed a certain limit in high speed situations.
Date: January 28, 1919
Creator: Duke, Earle H. & Brown, James D.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Rotary Boring-Drill.

Description: Patent for improvements in rotary boring drills. The invention provides a fluted drill collar for a drill bit designed to "break up the rock and other material tending to wedge in around the upper part of the head" (lines 19-21). The drill collar forms "a connection between the main rotary drill shaft and the drill bit" (lines 13-15).
Date: January 28, 1919
Creator: Hughes, Howard R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Scraper.

Description: Patent for a scraper with interchangeable blades, which can be used "for glue joints, and... scraping molded surfaces" (lines 25-26) that includes instructions and illustrations.
Date: January 28, 1919
Creator: Hartmann, John H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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