ENGINE No. 44- 



173 



Engine No. 44 is a vertical cross-compound, single-acting, 

 unjacketed, high-speed engine, having a single piston valve 

 fitted with ring packing, the speed being controlled by a shaft 

 governor. Steam is supplied by a horizontal return tubular 

 boiler, which by calorimeter test contained some 2% of moist- 

 ture. Drip pockets in the main pipe and at the throttle valve, 

 which were trapped, intercepted most of the entrained water 

 which would otherwise have passed into the engine. The load 

 consisted of an electric generator with constant output. The 

 valve and pistons were very nearly tight. 



120- 

 100- 



80- 

 60- 

 40- 

 20- 

 0- 



L.P. Cyl. 



-60 



-40 



-20 



- 



