UNT Libraries Government Documents Department - 10 Matching Results

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Improvement in Apparatus for the Manufacture of Gas from Oils.

Description: Patent for "machines for the manufacture of gas from oils, benzine, gasoline, &c.; and it consists in providing the tank or cistern with a retort constructed with an outer cylinder surrounding one or more cylinders or tubes, which inner cylinder is provided with perforated plates at the top and bottom thereof, and the space between said plates filled with sponge or other porous material, while the space or chamber between the inner and outer shell of the retort serves as a mixing-chamber for th… more
Date: June 18, 1872
Creator: Gearing, Charles & Gearing, Franklin A. G.
Item Type: Refine your search to only Patent

Improvement in Blow Offs For Boilers

Description: Patent for Improvement in Blow Offs For Boilers provides details of the construction of the blow off device with two labeled Figures and descriptive text. Also includes the significance of the blow off device and how it will improve locomotive travel by conserving water.
Date: September 10, 1872
Creator: Husted, Esbon Forrest
Item Type: Refine your search to only Patent

Improvement in Railroad-Switches.

Description: Patent for improvement in railroad-switches by “mounting a frog on a plate, and provided with pivoted rails or rail-sections, arranged for operation in connection with fixed rail-sections upon the plate, to form a continuity with either line of main rail, and connected below the plate by pivoted bars or levers, to secure a relative action or adjustment of the pivoted or movable rail-sections, whereby a very perfect and simple frog operating to prevent break in the main line or lines is obtained… more
Date: July 16, 1872
Creator: Fitzsimmons, Henry
Item Type: Refine your search to only Patent

Improvement in Rotary Engines.

Description: Patent for rotary engines "driven by steam or other elastic agent, or which may be used for pumping water" (lines 29-32) to obtain "a more direct application of the force applied to drive the engine" (lines 39-40) including instructions and illustrations.
Date: February 6, 1872
Creator: Richardson, John Dun
Item Type: Refine your search to only Patent

Improvment in Cultivators.

Description: Patent for improvement in digging or cultivation machines primarily adapted to the cultivation of cotton. Includes parts that can be added or removed from the machine, thereby reducing the number of machines needed for farm work. Includes illustrations and instructions.
Date: September 10, 1872
Creator: Forsgard, Gustave A.
Item Type: Refine your search to only Patent
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