States
Counties
Year
1 Matching Results
Results open in a new window/tab.
Results:
1 - 1 of
1
Improvement in Pumps.
Patent for "a pump having two barrels of different diameters, the larger being subjacent to the smaller, and each provided with a valved piston, said pistons being both secured to the same piston-rod, in combination with a weight, arranged to counter-balance the added weights of the water-columns above the smaller and below the larger piston." (Lines 12-20) Includes instructions and illustrations.
Date:
September 24, 1878
Creator:
Beeman, Geraldo A. & Mason, John T.
System:
The Portal to Texas History