UNT Libraries Government Documents Department - 12 Matching Results

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Electric Time-Signaling Apparatus.

Description: Patent for an electric time-signaling apparatus meant for use in hotels or other places where employees need to be alerted. The invention rings a bell and turns on a light when the signals goes off. "If the current of an incandescent electric-light system was electrically connected with a time-circuit, it would destroy the whole mechanism of the time-circuit" (lines 26-29).
Date: November 19, 1895
Creator: Todd, James T. A.
Item Type: Refine your search to only Patent

Guitar.

Description: Patent for certain new and useful improvements in stringed musical instruments, such as harp guitars, including instructions and illustrations.
Date: November 1, 1898
Creator: Ward, George Cooper
Item Type: Refine your search to only Patent

Mandolin.

Description: Patent for a new and useful improvements in Mandolins to"obtain a tone for mandolins as nearly as possible equal to that of violins and other stringed instruments played by bows"(line 8-10)
Date: November 30, 1897
Creator: Simpson, Roy B.
Item Type: Refine your search to only Patent

Method of and Apparatus for Treating Mineral Pitch.

Description: Patent for an "improved method of and apparatus for treating mineral pitch and similar material to readily separate the asphalt and asphalt-oils from sand, bituminous rock, and other impurities contained in the mined material and removing the sand and impurities" (lines 12-17). The method circulates the material in hot water to separate the asphalt and asphalt-oils from the sand and impurities. The asphalt and oil rise to the top of the water and the impurities sink.
Date: November 5, 1895
Creator: Sellers, Harvey Lee; Conyngton, Hugh Ronald & Conyngton, Thomas
Item Type: Refine your search to only Patent

Poison-Distributer.

Description: Patent for a new and improved machine for "distributing poison upon vines and plants that will be under the complete control of one man and which is operation will not injure the plants being treated and which will also insure an equal distribution of poison simultaneously upon three to seven or more rows of plants" (line 7 - 14).
Date: November 21, 1899
Creator: Richter, Frank L.
Item Type: Refine your search to only Patent

Revolving Book-Holder.

Description: Patent for a "combined desk and cabinet especially designed for students' use to obviate the scattering about of books when writing, studying, or making reference thereto" (lines 8-12). The are two rotating sections: a many-faced book-rest, and a cabinet above it where books can be stored. There is also a sliding writing-board underneath the desk.
Date: November 17, 1896
Creator: Ballart, Calvert L.
Item Type: Refine your search to only Patent

Suspenders.

Description: Patent for suspenders that have the minimum number of straps, buckles, and buttons. The suspenders can be easily attached and the wearer can move freely and be comfortable while wearing them.
Date: November 7, 1893
Creator: Post, Charles W.
Item Type: Refine your search to only Patent
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