File:Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics (1892) (14766728361).jpg

Identifier: modernmechanisme00benj (find matches)
Title: Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics
Year: 1892 (1890s)
Authors: Benjamin, Park, 1849-1922
Subjects: Mechanical engineering
Publisher: New York, D. Appleton
Contributing Library: Mugar Memorial Library, Boston University
Digitizing Sponsor: Boston University

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ints of cut-off can be adjusted by the engineer to suit varying con-ditions, but once adjusted they vary together liy the action of the governor, thus jireveiitingabiifirmal variations in receiver ))ressure. The valves are of the double-jjiston tyjie, workingin casings which are readily removable for repairs. J/ic Watt.s-Caiti/ilif/l (()m/)oiniil-Co)i(lcnsin(j E)if/ine.—The full-page engraving repre-.«ents a pair of engines recently put in the Shrewsliury IMill.s, at East Newark, X. J., bythe Watts-Campbell Co., of Newark. N. .1. The engines are tandem-compound, coupledto the shaft at right angles. The hij,di-pressure cylinders are 20 in. diameter and the low-pressurr- ;((• in.; stroke of pistons, 4S in. The engines run at a speed of ()4 revolutions permin. H(»lh the hiKJi and low pressure cylinders are steam-jacketed, the former witli steamdirect from the boiler and the latter with the exhaust steam from the high-pressure cylinders. ENGINES, STEAM, STATIONAEY RECIPKOCATING. 323
Text Appearing After Image:
324 EXGIXES, STEAM, STATIONARY RECIPROCATING. The exhaust from tlie high-pressure cylinder passes down through the legs to the receiver,which is cast as part of the low-pressure cvliiuler and includes the jacket-space of that cyl-inder. From the low-pressure cylinder tlie exhaust goes through a large rectangular passageto the condenser, which is situated midwav between the two low-pressure cylniders. A smallpump returns the water of condensation from the jackets to the boilers. But one air-pumpi-; emploved which is driven bv a return rod from one of the crank-pins. The main shaft is16 in. diameter at the center or wheel lit, and 1:5 in. at the journals. The band fly-wheel is25 ft in diameter, built up in ten segments. It has a face of 6 ft. 2 in., turned for two 28-m.belts and one 10-in. belt. The weight of the llv-whecl is 73.000 lbs. The valve-gear is of tlieCorliss type, with modifications that have been introduced by the Watts-Campbell Co. Tliespeed is controlled bv means of a sma

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