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in creator/contributor: "Cross, David L."  
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Steam-Engine

Description: Patent for improvements to be made upon steam engines, with description of parts and use and illustrations.
Date: May 25, 1886
Creator: Cross, David L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Rotary Engine.

Description: Patent for a new and improved rotary engine. This design consists "[i]n a rotary engine, the combination of the wheel having two circumferential channels and radial recesses, with the notched pistons, fitted in the radial recesses of the wheel, and the adjustable cam connected with the side casings and fitted into the notches of the pistons" (lines 90-96).
Date: August 17, 1880
Creator: Cross, David L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Rotary Steam Engine.

Description: Patent for a new and improved rotary steam engine. This design "first, provide[s] a novel form of valve for regulating the induction and eduction of steam to and from the cylinder; second, [it] provide[s] novel devices for reversing the movements of the rotating pistons; and, third, [it] provide[s] novel combinations of the parts of which the engine is composed"
Date: July 19, 1881
Creator: Cross, David L.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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