. 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. 26o MOTION AND CONTROLLING DEVICES, ETC. gearing on the sleeves and on rods within the tubular arms abovementioned, which rods also carry on their ends gears for causing therevolution of the satelHtes around their primaries. See Nos. 984 to 992 first volume of mechani
. 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. 26o MOTION AND CONTROLLING DEVICES, ETC. gearing on the sleeves and on rods within the tubular arms abovementioned, which rods also carry on their ends gears for causing therevolution of the satelHtes around their primaries. See Nos. 984 to 992 first volume of mechanical movements for detailsof planetary gear trains. 689. Planetarium of the solar system. 690. THE PHENAKISTOSCOPE. This instrument, which, likethe thaumatrope and zeotrope, depends upon the persistence of visual im-pressions, consists of a circular diskon which a row of figures are paintedin a series of attitudes such as wouldbe consecutively attained in theprogress of an action ; for example,leaping, walking, swimming, effect is to produce the appear-ance of actual motion. The disk isplaced on a handle and rotated by thefinger on a nut. It is held in front of the observer, the face of the toytoward a looking-glass, and the figures are viewed through the
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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
