Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . Alarm-Pump. The most favorable length of stroke on fire-engines ia from 30to 35 inches. The power necessary ia about 1 man for every 22 cubic inchesof pump-barrel; double this power if double-acting. Fig Hydraulic-Pressure Pump. PUMP. 1827 PUMP-BOB. Fig. 4028. Haskells alarm-pump for nautical use has three cylinders a a a,the pistons of which are connecte
Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . Alarm-Pump. The most favorable length of stroke on fire-engines ia from 30to 35 inches. The power necessary ia about 1 man for every 22 cubic inchesof pump-barrel; double this power if double-acting. Fig Hydraulic-Pressure Pump. PUMP. 1827 PUMP-BOB. Fig. 4028. Haskells alarm-pump for nautical use has three cylinders a a a,the pistons of which are connected to crank-arms arranged atequal angles around the shaft 6,and operated, when worked as apump, by an arm on the fly-wheelc. The three delivery-pipes fromthe cylinders coalesce at d, so asto form but one; their respectivesuction-pipes are also united abovee, and the pipe formed by theirjunction is provided with twovalves, one of which opens connec-tiun with the pipe leading to thehold and the otner with a hoseleading overboard, when it is de-sired to wash decks. An air-chamber /is located above the pipe) d, and over this is a whistle s;, usedfor sounding signals or this purpose the pipe f/ is closedby turning the cock h, wben, byturning the fly-wheel, air, admit-ted through a valve in the suction-pipe, is forced into the cylinder andallowed to escape by depressingthe lever j, which works a desired to increase the
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Keywords: ., bookcentury1800, booksubjectin, booksubjectmechanicalengineering
