COMPARATIVE RESULTS IN STEAM AND COAL CONSUMPTION. i6i 



AUXILIARY MACHINERY. 



Blowers:— Two 25" diameter Sirocco blowers, and direct connected 

 electric motors, delivering 16,000 cubic feet of air per minute 

 against pressure of 2|" of water at fan; connected to double front 

 of each boiler through steel casing. 



Dynamos:— One 25 K. W. — Turbine-driven dynamo, running at 3,600 

 revolutions. One 15 K. W. — Direct connected dynamo, running 

 at 400 revolutions. 



Ice machine: — One J. & E. Halls No. 6. 



Steering engine. \ 



Evaporator of 7 tons capacity. 



Circulating pumps: — ^Two centrifugal pumps, directly connected to 

 independent engines. 



Air pumps: — Two Blake single acting beam air pumps, 12" X 22" X 15". 

 One of these pumps was removed and an Edwards type driven by 

 links from the horse-power crosshead was installed with the center 

 engine. 



Feed pumps: — ^Two Blake simplex, 12" X 7" X 16". 



Donkey pumps:— No. i, Blake vertical duplex, 8"X6"X 12". 

 No. 2, Blake vertical duplex, 9"X6"X 10". 

 No. 3, Blake horizontal duplex, 5i"X3^"X6". 



Tank pumps: — 2 Blake horizontal duplex, 4i"X3|"X4". 

 I Blake horizontal duplex, 3" X 2" X 3". 



Oil pumps: — 2 small Weir oil pumps for lubricating turbine bearings. 



PROPELLER PARTICULARS. 



3 turbines, diameter, 4' 5"; pitch, 3' 6"; area ratio, 47 per cent. 

 Center engine, diameter, 9' 6"; pitch, 10' 6"; area ratio, 40 per cent. 

 2 wing turbines, diameter, 4'; pitch, 3' 3"; area ratio, 45 per cent. 



