SMALL SAWMILLS, THEIR EQUIPMENT, ETC. 
17 
Diameter of pulley, 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-off 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- 
wheel 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 — 
• 
25 horse- 
power. 
30 horse- 
power. 
10 by 12 
160 
24 and 52 
12 and 12| 
36 
52 
38 
30 
34 
96 
16 
25 
2i 
3" 
3| 
10 by 12 
190 
Diameter of pulley 
• inches. . 
24 and 52 
Face of pullevs 
do 
12 and 12§ 
do 
36 
Length of furnace 
do 
52 
Height of furnace 
do.... 
40 
Width of furnace .' 
do 
30 
34 
Length of tul >es 
inches. . 
120 
do 
16 
Length of smokestack 
Size of steam pipe : 
...feet.. 
25 
2k 
do 
3" 
Diameter of shaft '. 
rio 
32 
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 
