Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries (1910)
Hiscox, Gardner Dexter, 1822?-1908 · New York, The N. W. Henley publishing company · leaf 38
the building, are four hemispherical copper cups.These, whatever may be the directionof the wind, are caused to turn roundwith a speed, as has been determinedby experiment, of about one-third thevelocity of the wind. To the lower end of the shaft thusmade to revolve by the cups is attachedan… … 38 MEASUREMENT OF POWER, SPRINGS. and bears lightly against a surface, is carried from the bottom to thetop of the paper by each revolution of the cam. It should be under-stood that the paper is attached to a board drawn aside by a clock atthe rate of half an inch an hour. The number of times that…
Mechanical movements
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