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Improvement in the Manufacture of Hydraulic Stone.
Patent for improvement in the manufacture of Hydraulic Stone to furnish and improved artificial stone for use in different purposes that can resist weather changes without being affected.
Date:
September 16, 1879
Creator:
Dimelow, John
System:
The Portal to Texas History
Solar-Time Instrument.
Patent for a new and improved solar-time instrument with "the telescopic tube provided at one end with a lens, and at the other end with a removable diaphragm having horizontal and vertical lines marked thereon" (page 2).
Date:
September 9, 1879
Creator:
Hayford, Samuel
System:
The Portal to Texas History