. 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. of the hydrauhc punch, showing lever action. 321. FIRE EXTINGUISHER. Grinnel sprinkler type. Eachsprinkler is calculated to supply an area of 100 feet. The valve, a leaden disk affixedto the center of alarger disk of brass,is held up againstthe valve orifice bya syste
. 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. of the hydrauhc punch, showing lever action. 321. FIRE EXTINGUISHER. Grinnel sprinkler type. Eachsprinkler is calculated to supply an area of 100 feet. The valve, a leaden disk affixedto the center of alarger disk of brass,is held up againstthe valve orifice bya system of twocurved levers, thelower of which issecured by fusiblesolder at its lowestpoint to a lightmetal frame. The valve seat is itself made elastic by the device offixing it in the center of a diaphragm of thin, hard metal, perforatedfor that purpose, and the pressure of the water upon the diaphragmkeeps it tight against the valve. The larger disk attached to the valvedisk serv^es as a deflector. When the solder is melted, the levers flyapart, and the valve and deflector drop about V^ inch, leaving ,spacefor the water to escape. It dashes against the disk, which is notchedand slightly dished at its edges, and is then deflected upward in spraytoward the ceiling. 322. Shows the position of the levers and the fusible 134 HYDRAULIC POWER AXD APPLIANCES. 2nd TANK STIRRER 1st TANK 3=3 STIRRER 323. DOMESTIC REFRIGERATOR. Water enters the coil atA, and is drawn into the tank at B, in which a quantity of nitrate of ammonia has been placedequal in weight with thewater. The cold pro-duced in the mixturecools the water in thecoil, from which drinkingwater may be overflow from thetank siphons to the re-frigerator tank below forcooling the storage cham-ber. For greater refrig-eration, or for making ablock of ice or freezing acarafe, a quantity of ni-trate of ammonia may beplaced in the second tank and cold water from the coil drawn to it bythe valve V, when the solution tem
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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
