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in subjects: "boilers"  
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Water-Heater.

Description: Patent for a water heater for use in creating steam for oil and gas boilers, which heats faster than previous models.
Date: April 5, 1910
Creator: Hardie, Jeffie Watkins
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Steam-Pressure and Water-Level Recorder for Boilers.

Description: Patent for a division on the inventor's previous patent application (No. 404,658). This patent is for a device that records steam pressure and water levels in boilers, and is meant "to provide a new and improved steam pressure recorder for boilers, which is simple and durable in construction, very effective in operation, and arranged to automatically record the pressure of the steam in the boiler for a given period" (lines 14-19).
Date: April 18, 1893
Creator: Lewis, William Morgan
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Device for Cutting Boiler Tubes.

Description: Patent for a new device for cutting boiler-tubes. This design "is to be adjusted a distance from the head sufficiently in excess of the thickness of the tube sheet to prevent injury to the latter. The device is then inserted into the end of the tube, with the head abutting against the outside of the tube-sheet. By turning the screw the wedges may then be drawn toward each other, thus forcing the block carrying the cutter outward. The device is now to be turned by the shank alternately with feed… more
Date: April 18, 1882
Creator: Franklin, James Johnson
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Electrical Apparatus for Heating Stills, Boilers, and the Like.

Description: Patent for "Improvements in Electrical Apparatus for Heating Stills, Boilers, and the like" (lines 6-8) that uses electricity and includes "a heating element which is not affected by repeated changes in temperature, which is adapted to present a heating surface of large area, which may be raised to a high temperature with a low current, and which is many times more economical in use than metal coils possessing less heat radiating powers" (lines 21-28) including illustrations.
Date: April 9, 1918
Creator: Lorenz, Charles O.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Flue Scraper

Description: Patent for a new and improved boiler tube scraper which will allow for easier insertion and removal, including illustrations and instructions.
Date: April 8, 1913
Creator: Lorenz, William Adam
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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