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)
ed which on their face make theiroperativeness appear positive and clear to the average mind, and it is true that in many instances it is quitedifficult to explain to the uninitiated wherein the reasoning regarding such problems and theories are at fault,but whoever has a general knowledge of the… … [ 126 ] PERPETUAL MOTION. The following descriptions relate to various forms of Perpetual Motion Machines invented from the fifteenthcentury to the present time. The great similarity of machines invented hundreds of years ago with those of very recentorigin will be readily apparent: No. 1 of the…
Patents · Mechanical movements
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