UNT Libraries Government Documents Department - 14 Matching Results

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Improvement in Pumps.

Description: Patent relating to "improvements in double-acting pumps. The object is to devise a pump...[so] as to allow the admission of water at one end of and its discharge at the other" (lines 16-24). Includes instructions and illustration.
Date: July 1, 1879
Creator: Garlock, William H. & Cooke, Richard
Item Type: Refine your search to only Patent

Improvement in Steam-Engines.

Description: Patent related to "improvements in steam-engines. The object...is to devise means whereby the valves may be actuated automatically without the employment of exterior mechanisms by the use of exhaust-steam" (lines 17-22). Includes instructions and illustration.
Date: July 1, 1879
Creator: Garlock, William H. & Cooke, Richard
Item Type: Refine your search to only Patent

Scuffle-Hoe

Description: Patent for a garden hand tool for destroying weeds and stirring, or aerating, soil. Used for garden crops.
Date: March 25, 1879
Creator: Munson, T. V. (Thomas Volney), 1843-1913
Item Type: Refine your search to only Patent

Improvement in Wood Pavements.

Description: Patent for a new and improved construction of Bois D'Arc Pavement, which uses two layers of planks that cross at right angle as a base, sand to hold bois d'arc blocks in place and fill gaps in between, and coal-tar covering planks to prevent sand from shifting. It includes illustrations.
Date: January 14, 1879
Creator: Shellenberger, Samuel Luther
Item Type: Refine your search to only Patent
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