The inventor's universal educator. An educational cyclopaedia and guide for inventors, patentees, manufacturers, mechanics, and all others connected directly or indirectly with patents (1919)
[ 60 ] … [ 61 ] 900 MECHANICAL MOVEMENTS 765.—Vojacks pump, British patent 766.—Thompsons British patent of 1860 767.—Eislers U. S. Patent 768.—Ivens type U. S. Patent 769.—Combined bucket and plunger pump. Draws water on up stroke and delivers on both up and down stroke 770.—Single acting pump…
Patents · Mechanical movements
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