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Improvement in Rotary Subsoil-Plows.
Patent for an improvement upon subsoil plows, using a series of spades arranged upon the same pulleyed rotary shaft, combined with furrow-opening plows.
Date:
March 28, 1871
Creator:
Morris, Joseph R.
System:
The Portal to Texas History
Improvement in Apparatus for the Manufacture of Ice.
Patent for a refrigeration apparatus "in which a continuous operation is maintained by means of a current of ether or other volatile fluid which liquefies at a low temperature." (Lines 18-21) Includes instructions and illustrations.
Date:
November 28, 1871
Creator:
Mühl, A.
System:
The Portal to Texas History
Improvement in Furnaces for Producing Hydrogen and Treating Ores
Patent for an improvement on heating furnaces, having an external water tank and steam tank and an orifice for the admission of steam from the water chamber.
Date:
March 28, 1871
Creator:
Morris, Joseph R.
System:
The Portal to Texas History
Improvement in Belt-Fasteners.
Patent for new and useful improvements in Belt-Fasteners. Illustration is included.
Date:
November 28, 1871
Creator:
Olmsted, Marcellus
System:
The Portal to Texas History