. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . ^^^^^^??iiM^ coHHEcricn with discharcc Mii^f it- Fig. -Sergeant compressor. valve now closes, and the small connecting-pipes are instantly filled with compressed air; thesteam-valve automatically opens, and the compression goes on in the regular way. Anotherfunction of this device isto prevent the compressor from stopping or getting on the compressors are liable to center when doing work at slow
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . ^^^^^^??iiM^ coHHEcricn with discharcc Mii^f it- Fig. -Sergeant compressor. valve now closes, and the small connecting-pipes are instantly filled with compressed air; thesteam-valve automatically opens, and the compression goes on in the regular way. Anotherfunction of this device isto prevent the compressor from stopping or getting on the compressors are liable to center when doing work at slow speed. The ^orwalk Compound Air-Comprp-^snr is shown in outline in Fig. 8. The lettermg onthe cut refers to the several parts as follows: A, inlet conduit for cold air; B, removable2 18 AIR-COMPRESSORS. hoods of wood; C\ inlet valve; D, intake cylinder; E, discharge-valve; F, intercooler; G,compressing cylinder ; //. discharge air-pipe: J. steam-cylinder; K, steam-pipe; 7v, exhauststeam-pipe; K, swivel connection for crosshcad; 0, air relief-valve, to effect easy starting. Fig. 8.—Norwalk compressor. after stopping with all pressure on the pipes; 1, cold-water pipe to cooling jacket; 2 and3, water-pipe ; 4, water overflow or discharge; 5, stone on end of foundation : G, foundation :7, space to get at underside of cylinder; N, floor-line. Arrows on the water-pipes show thedirection of water circulation. When pistons move as indicated by the arrow on the piston-rod, steam and air circulate in direction shown by arrows in the cylinders. The air is admittedto the cylinder by valves of the well-known Corliss steam-engine pattern, which have a posi-tive movement from the main shaft. The port is large, is clear of obstructions, and opens di-rectly into tile cylinder. Tlie action of the forces in a compound air-compressor are describedas follows: The large air-cylinder on the left determines the capacity of the compre.^sor. andfor illustration its piston is taken at 100 sq. in. area
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
