STEAM ENGINES 



THE prime movers in the Power Plant of the 

 Singer Building consist of five Ball & 

 Wood Corliss Valve, Non-Releasing Gear 

 Engines of the following types and normal ratings: 

 Two Cross Compounds having high-pressure cyl- 

 inders, 17 inches diameter, low-pressure cylinders 

 29 inches diameter, length of stroke 27 inches; two 

 Simples, each having cylinders 21 inches diameter, 27 

 inches length of stroke, all of 480 H.P. each; and one 

 Simple, having cylinder 17 inches diameter, length of 

 stroke 27 inches, and rated 320 H.P. 



Each engine operates at a speed of 150 revolutions 

 per minute at 150 pounds' steam pressure with free 

 atmospheric exhaust and is directly connected to a 

 direct current Diehl Generator. 



The Hall & Wood Company is the originator and 

 builder of the first successful Non-releasing Gear, 

 Corliss Valve Engine, and during the past fifteen years 

 has installed many in some of the most prominent 

 power plants in the country. 



The aim of the originator was to realize all of the 

 advantages of the Corliss Valve and to eliminate the 

 disadvantages resulting from the releasing gear. 

 The steam economies realized, as well as the well- 

 proved ability to carry not only loads at ratings but 



heavy overloads, justify the Company's plan. The 

 admission valves of the high- and low-pressure cylin- 

 ders are controlled by the Ball & Wood Governor, 

 while the exhaust valves are actuated through inde- 

 pendent eccentrics. Wide range of cut-off is thus ob- 

 tained and great flexibility in adjustment permissible. 

 Not only is the steam economy of the best, but the 

 floor space required per horse-power very much less 

 than that demanded by the releasing gear types. At 

 the same time a higher mechanical efficiency results. 



Under variable load conditions the mean economy 

 shows the advantage of the Ball & Wood System. 



An important feature of any power plant, especial- 

 ly when high pressures are carried, is the steam piping. 

 The best types of engines and boilers may be installed 

 and the plant fail because of unreliable piping. The 

 Ball & Wood Company, believing, as it does, in the 

 best methods, recognized the weakness in any system 

 in which joints could leak, even in cases of installations 

 in which it was the purpose and plan of the engineers 

 and purchasers to apply the best methods, and to this 

 end developed what is now well known as the Ball- 

 Wood Welded Flanged Pipe and Bends. The boilers 

 of the Singer Building Power Plant are fitted with 

 the Ball- Wood Welded Flanged Pipe and Pipe Bends. 



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