Furnace (open access)

Furnace

Patent for "an improvement in furnaces, and more particularly to such as are employed for burning offal, refuse from slaughtering-houses" in which the furnace is surrounded by water, and any liquid inside the furnace can be expelled in the form of vapor (lines11-14).
Date: January 27, 1891
Creator: Hatcher, William Andrew
System: The Portal to Texas History
Car Coupling. (open access)

Car Coupling.

Patent for a new and improved coupling for railroad cars. This design "consist[s] of a draw-head having a spring-actuated sliding piece projecting into the draw-head, with a shouldered end therein, and a hole adapted to register with the coupling-holes in the draw-head, a coupling-link having yielding slotted pieces pivoted at its ends above slots in the ends of the link, and a coupling-pin with reacting spring mounted in a frame having a winding-drum, and a rope connected with the coupling-pin, the latter projecting through and engaging the sliding piece and link" (lines 76-87).
Date: July 24, 1888
Creator: Griffith, William H.
System: The Portal to Texas History
Wrench (open access)

Wrench

Patent for a wrench. Illustration included.
Date: November 6, 1906
Creator: Land, Henry Clay
System: The Portal to Texas History
Dynamo Electric Machine (open access)

Dynamo Electric Machine

Patent for Improvement of Dynamo-Electric Machines. The improvement turns electric energy into mechanical entry.
Date: August 10, 1920
Creator: Reynolds, William T. & Reynolds, Bruce A.
System: The Portal to Texas History