. 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. 5:^3. LIGHTING BUOY. Compressed gasis charged into the body of the buoy at from 100to 200 pounds per square inch. A regulator de-Kvers the gas to the burner at a uniform single charge will burn for several days. The inverted cone under the lamp protects itf
. 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. 5:^3. LIGHTING BUOY. Compressed gasis charged into the body of the buoy at from 100to 200 pounds per square inch. A regulator de-Kvers the gas to the burner at a uniform single charge will burn for several days. The inverted cone under the lamp protects itfrom the splash of the waves. Good for har-bors and channels. 524. FOG WHISTLE. A signal of warning operated by w^avemotion. A sounder on the principle of the steam whistle is exposed to a blast of air, according to the facihtiesof operation. Usually, motion derivedfrom the waves, the tide, the wind, orclockwork, makes it automatic. Inthe example, the semicircular tubularvessel is mounted upon a rock shaft,and has at each extremity an ordinarywhistle and a valve opening the vessel is partially filled withw^ater and rocked to and fro, the air isforced through the whistle and soundsan 525. FISH WAY. A device to enable fish to ascend falls or may consist of a series of stepped basins over which the water de-scends, turning a fall into a cas-cade, and sometimes known as afish ladder; or it may consist of achute with a sinuous track fordiminishing the velocity and assist-ing the passage of the fish to thelevel above the dam. In the exam-ple it is an inclined chute having a series of chambers containing com-paratively still water, the current being confined to a relatively smallerspace.
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Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
