. 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. ELECTRIC POWER AND. DEVICES. 179. 432. ELECTRO-MAGNET-IC CLUTCH. Reversechange speed from a singlepinion. A is the motor andB the motor pinion, drivinga gear C which is keyed to ashaft D. From shaft D themotion can be transmitted toshaft F, either through gearsC E and
. 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. ELECTRIC POWER AND. DEVICES. 179. 432. ELECTRO-MAGNET-IC CLUTCH. Reversechange speed from a singlepinion. A is the motor andB the motor pinion, drivinga gear C which is keyed to ashaft D. From shaft D themotion can be transmitted toshaft F, either through gearsC E and G, or through gearsH and I—the clutch arrange-ment being the same as in Figs. 430-431. 433. WIRELESS TELEGRAPHY. Marconi receiver, f is thecoherer tube, with its silver pole pieces, f, f. The coherer forms part of a circuit containing a local cell,g, and a sensitive telegraphy electric waves impinge uponthe coherer, its resistance falls froma nearly infinite value to somethingbetween 500 and 100 ohms, whichallows the cell, g, to energize theelectro-magnet of the relay, n, andclose a circuit containing a larger battery, r, together with a Morse re-corder, h, and a trembling electric bell, p, to act as decoherer. Thehammer, 0, of the bell is so adjusted as to tap the coherer tube and shakethe filings in it. If at the moment in which these acti
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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
