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)
[ -40 ] KM. PERPETUAL MOTION. No. 25 illustrates another form of air and fluid operated motor, in which, (within a cistern of water) is held aradial arm frame, the members of which are hollow and communicate with the hollow axle having an opening A.The wheel hub at one end has a crank, which,…
Patents · Mechanical movements
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