. 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. ^--^-^^^ «f==^. W^ lJ 313. VENTURI TUBE AND MEASURINGMETER. The differential velocity of the water in themain pipe and in the throat of the double conical tubeproduces a differential pressure in the small tubes withtheir mouths turned in opposite directions, which is
. 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. ^--^-^^^ «f==^. W^ lJ 313. VENTURI TUBE AND MEASURINGMETER. The differential velocity of the water in themain pipe and in the throat of the double conical tubeproduces a differential pressure in the small tubes withtheir mouths turned in opposite directions, which is usedfor registering the amount of water flow in the main _ pipe by the flow through the . small pipes. The measurementis made by a 314. HYDRAULIC LIFTINGJACK. The shell of the jack extendsover and nearly to the foot of the ram toenable a lift at both head and foot of thejack. The small plunger and valves areoperated by the lever and arm D, forHfting, and the by-pass valve serves forlowering a load or closing the jack by itsown weight, which will send the oil backto the cistern. S, suction valve ; F, dis-charge valve ; G, leather cup packing. 132 HYDRAULIC TOWER AND APPLIANCES.
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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
