. 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. 25. PANEL type. A silent clutchthat prevents back movementand takes up a forward motionwithout the jerk of a ratchet andpawl. Useful on agricultural im-plements, sewing-machines, etc. 26. The under figure repre-sents a triangular quick-actionpanel app
. 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. 25. PANEL type. A silent clutchthat prevents back movementand takes up a forward motionwithout the jerk of a ratchet andpawl. Useful on agricultural im-plements, sewing-machines, etc. 26. The under figure repre-sents a triangular quick-actionpanel apphed on the same prin-ciple as the other against threefriction segments. Plan and sec-tion. TRANSMISSION OF POWER. 29. 27. FRICTION PULLEY. Uponthe hub of the pulley is keyed a collarwith lugs on one side which engage withlugs on the friction disk; this causes thedisk that fits loosely on the hub of thepulley to revolve with the pulley, and atthe same time leaves the disk free to vi-brate sideways if necessary. The advan-tage of the disk being loosely connectedwith the pulley in this manner, will beappreciated in case the pulley should be-come worn loose on the shaft. 28. VISCOSIMETER. An instrument for measuring the viscosityof liquids, or the resistance which a liquid offers to flowing or a quick change of state. The liquid to betested is placed in the reservoir inwhich is a paddle-shaped agitatoror wheel. The shaft of this wheelis run by a train of gears actuatedby a drum, which is caused to re-volve by means of a weight andcord as shown. At the upper endof the shaft is a worm and wormwheel and on the shaft of theworm wheel is a pointer, whichpasses over the face of a dial, bywhich the speed of the
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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
