SMALL SAWMILLS. THEIE. EQUIPMENT^ ETC. 



17 



Diameter of pi:lley, 44 inches. 

 Face of pulley, 10 by 10^ inches. 

 Diameter of boiler, 32 inches. 

 Length of furnace, 44 inches. 

 Height of furnace, 33 inches. 

 Width of furnace, 26 inches. 

 Number of 3-inch tubes, 26. 

 Length of tubes, 78 inches. 

 Shipping weight, 7,300 pounds. 



The price is $776. The following are furnished as regular equip- 

 ment: Oil cups, sight- feed lubricator, steam gauge, water gauge, 

 whistle, gauge cocks, throttle, blow-cff check, stop and safety valves, 

 smoke stack, grates, governor, belt pulleys, pet cocks and wrenches, 

 stack and guy wires, steam and exhaust connections and injectors. 



The center crank horizontal engine mounted on a water front open 

 bottom locomotive boiler is suitable for class B mills. The engine is 

 firmly bolted to brackets securely fastened to the shell of the boiler. 

 It can also be detached and used separately. 



The fittings and fixtures comprise grates, water column, water 

 gauge, gauge cocks, steam gauge, safety valve, check and stop valves, 

 whistle blow-off valve, stock and guy rods, injector attached, fly- 

 Avheel pulley, oil cups, sight-feed lubricator, throttle valve and nip- 

 ples, automatic governor and belt, pipe connection between boiler 

 and engine, and exhaust pipe; pump and heater instead of injector 

 and spark arrester extra. 



The usual specifications for a 25 or 30 horsepower engine attached 

 to locomotive boiler, suitable for class B mills, are — 



Size of cvlinder inches.. 



Revolutions per minute 



Diameter of pulley inches.. 



Face of pullej^s , do 



Diameter of boiler do 



Length of furnace do 



Height of furnace do 



Width of furnace do 



Number of 3-inch tnl:;es 



Length of tubes inches. . 



Diameter of smokestack do 



Length of smokestack feet. . 



Size of steam pipe inches.. 



Size of exhaust pipe do 



Diameter of shaft ! do 



25 horse- 

 power. 



10 by 12 



160 



24 and 52 



12 and 12J 



36 



52 



38 



30 



34 



96 



16 



25 



2h 



3" 



35 



30 horse- 

 power. 



10 by 12 



190 



24 and 52 



12 and 12J 



36 



52 



40 



30 



34 



120 



16 



25 



2i 



3' 



3i 



The water-front, open-bottom boiler has proved to be one of the 

 best types. With the open bottom there is no dead water space below 

 the grate surface, such as exists in the water-bottom boilers, to fill 

 with mud and sediment. The open bottom permits the free discharge 

 and easy removal of ashes, thus providing free draft, an important 

 consideration in the case of the poorer grades of fuel such as are 

 63262°— 18— Bull. 718 3 



