. 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. d arbor is mounted a disk, Q,provided with two projections, 4,5, and the second-hand arbor isprovided with a heart-shaped armature, E, is rigidly at-tached to the levers, F, G, so thatthey move whenever the magnet,D, is energized. The lever, F, isadapted to en
. 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. d arbor is mounted a disk, Q,provided with two projections, 4,5, and the second-hand arbor isprovided with a heart-shaped armature, E, is rigidly at-tached to the levers, F, G, so thatthey move whenever the magnet,D, is energized. The lever, F, isadapted to engage the heart-shapedcam on the second-hand arbor andbring it to XII, and the lever, G,is furnished with a curved endhaving fingers for engaging theprojections, 4, 5, on the minutedisk, thus turning the minute-hand arbor, bringing the minutehand to XII. A latch, L, pivoted to the clock frame, is provided with apin, I, arranged to drop under the hook, H, carried by the lever, G, so as toprevent any action of the synchronizing levers except at the hour. Apin in a disk mounted on the cannon socket unlocks the latch, L, aboutfifty seconds before the hour, and closes it again about fifty seconds afterthe signal. This arrangement prevents any accidental cross on the syn-chronizing line from disturbing the hands during the SECTION XVII. MINING DEVICES ANDAPPLIANCES. 271 Section XVII. MINING DEVICES AND APPLIANCES.
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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
