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in subjects: "Science and Technology - Tools"  
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Traffic-Signal.

Description: Patent for a traffic signal designed especially for use while attached to an automobile, illustrations included. The device is intended to indicate the direction of proposed turning and travel of the vehicle via controls that are convenient to the vehicle operator.
Date: December 9, 1919
Creator: Wilke, Edward V.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Blowpipe.

Description: Patent for an improved blowpipe (or hydrocarbon torch), which when activated causes "an extremely hot needle flame" for a Bunsen burner (lines 18-19). Patent contains an illustration and instructions.
Date: May 9, 1916
Creator: Downie, James H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Boiler Skimmer or Cleaner

Description: Patent for improvements for a boiler skimmer or cleaner with suitable valves to control the blowing off from scum, steam or water.
Date: September 9, 1919
Creator: Phillips, Eugene N. & Dick, Harvey H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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