UNT Libraries Government Documents Department - 9 Matching Results

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Trolley-Harp.

Description: Patent for improvements to the efficiency of trolley harps by changing how the currents that power "overhead type electric car systems" (lines 13-14) are conducted.
Date: May 15, 1917
Creator: Carmack, James H.
Item Type: Refine your search to only Patent

Peanut Digger.

Description: Patent for new and useful improvements to a machine for harvesting or digging peanuts, including instructions and illustrations.
Date: May 15, 1917
Creator: Amos, Thomas E. & Abernathy, George J.
Item Type: Refine your search to only Patent

Dry Closet.

Description: Patent for a new design that improves "construction, utility, and efficiency of dry closets"(lines 10-11) that would also allow the use of an attachment specifically for dry closet seats. Includes design for mesh cloth to capture waste.
Date: April 24, 1917
Creator: Mershon, John H.
Item Type: Refine your search to only Patent

Vapor-Condensing Apparatus.

Description: Patent for a vapor condensing system that utilizes a mixing chamber and several coils of tubing to produce a cooling effect. The application is suitable for ice machines, refrigeration plants and other systems.
Date: November 13, 1917
Creator: Phillips, John Ernst
Item Type: Refine your search to only Patent

Cotton-Gin.

Description: Patent for an improved method of locating the air blast apparatus for cleaning lint from the saw teeth of saw-type cotton gins, so that the cotton lint does not accumulate on the cleaning apparatus and render it inoperative, including illustrations.
Date: July 24, 1917
Creator: Hopper, James F.; Stephens, George B. & Young, Harry F.
Item Type: Refine your search to only Patent
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