3 Matching Results
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Compressed-Air Water-Elevator.
Patent for new and improved compressed air water elevator to lift water from reservoirs.
Date:
January 27, 1880
Creator:
Keating, Thomas, B.; Clarke, Lafe. W. & Gelatt, Wallace W.
System:
The Portal to Texas History
Apparatus for Obtaining a Vacuum.
Patent for a new and improved vacuum. This design utilizes a liquid pump, plates, tubes and valves to make "about as perfect a vacuum . . . as can be obtained by an ordinary pump" (lines 53-55).
Date:
July 27, 1880
Creator:
Ward, Lyman Henry
System:
The Portal to Texas History
Cotton Planter and Cultivator.
Patent for improvements in cotton planters and cultivators by “attaching one or more levers to the axle which are pivoted to a frame below the axle, in which the levers are also connected with the caster-wheel in front, whereby the frame may be raised so as to elevate the cultivators above the earth.” (Lines 14-19) Illustration is included.
Date:
July 27, 1880
Creator:
Walsh, James D.
System:
The Portal to Texas History