. Appleton's dictionary of machines, mechanics, engine-work, and engineering. tre, and covered in by the cap A, Fig. 3154, which is held firmly in itsplace by the single bolt B. As all these valves are thus accessible at a moments warning, a greatsource of danger from delay in relieving them from impediments is avoided. This pump is in general use on board of steamboats, and in connection with stationaiy boilers, bothon account of its value as an independent feed-pump, and also as a means of safety against accidents,having been found of great use as a bilge pump, and also as a fire engine. Thi
. Appleton's dictionary of machines, mechanics, engine-work, and engineering. tre, and covered in by the cap A, Fig. 3154, which is held firmly in itsplace by the single bolt B. As all these valves are thus accessible at a moments warning, a greatsource of danger from delay in relieving them from impediments is avoided. This pump is in general use on board of steamboats, and in connection with stationaiy boilers, bothon account of its value as an independent feed-pump, and also as a means of safety against accidents,having been found of great use as a bilge pump, and also as a fire engine. This pump has also been employed for water supply in the city of Savannah, Ga., and Cambridge,Mass. The duty at the latter place almost comes up to that of the best Cornish Engines. Theengines consist each of two cylinders on the Wolf plan, with condensers. The cylinders are concentric,the smaller being interior, and the larger exterior; the piston of the latter being annular with two whole machine is compact and economical, both in first cost and in working. 0 PUMPS. Carretts Steam Pump. Figs. 8156 and 4157 represent two views of the pump, oonstruot-ed to deliver ton gallons per minute at a height of 120 feet, the steam power being derived from atwo-horse portable high-pressure boiler, complete in itself, and weighing under (i c\vt» 540 PUMPS, STEAM. 3157. Fio-. 3157 is a front elevation of the pump and actuating steam-cylinder, and Fig. 3156 is a corre-sponding side elevation or view, at right angles to the first figure. The steam-cylinder A is invertedupon the horizontal plate B, which is bolted to the top of the two-standards C, forming the framingof the machine. These standards spring from the chest D, which answers as the base of the whole, andcontains the influx and efflux vessels for the water. The branch E conveys the steam to the slide-valvechest F which is arranged in the simplest manner, the slide being worked direct from the eccentric G,on the crank-s
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Keywords: ., bookcentury1800, booksubjectmechanicalengineering, bookyear1861
