Improvement in Throttle-Valve Stands and Stems. (open access)

Improvement in Throttle-Valve Stands and Stems.

Patent for "a new arrangement of support for the stem of a throttle-valve, and has for its object to facilitate the lubricating of the screw and cause the parts to be firmly held in place." (Lines 19-23) Includes instructions and illustrations.
Date: April 2, 1872
Creator: Compant, John M. & Krauskopf, Engelbert
System: The Portal to Texas History
Improvements in Mattress-Stuffers. (open access)

Improvements in Mattress-Stuffers.

Patent for an improved mattress stuffer with a horizontal case and a hinged cover.
Date: April 2, 1872
Creator: Watson, Thomas A.
System: The Portal to Texas History
Improvement in Preserving Meat, &c. (open access)

Improvement in Preserving Meat, &c.

Patent for a method of preserving meat, vegetables, and other foods in an air-tight container using hydrogen gas and displaced water.
Date: April 2, 1872
Creator: Gillespie, William A.
System: The Portal to Texas History