Po]>iil(ir Sricnce Motilhl// 



377 



In the arrompanyini; illustration is 

 shown the pulverized fuel-burninir eciuip- 

 ment as applied to a locomotive. The 

 ♦^uel container, which is a part of the 

 ordinary locomotive tender, receives the 

 coal-dust or puKerized coal through two 

 openings i.i the top. As dryness of the 

 tuel is a prime requisite these openings 

 are kept iightl\- closed. In starting the 

 fire the fireman turns on the steam- 

 blowcr in the smoke-box, after which he 



his place in the cab near the engineer. 

 When the powdered coal and air are 

 mixed in the right proportions, the 

 mixture bursts into a clear, intense Hame 

 in the fire-box, with no visible smoke at 

 the stack. It takes less than an hour 

 to get up two hundred pounds of steam, 

 and when the engine is standing the 

 fire may be put out entirely and then 

 reignitcd within an hour from the heat 

 of the brick arches in the fire-box. 



STEAM 

 BLOWER 



In Starting th; Fire the Fireman Turns on the Steam-Blower in the Smoke-Box. The Air- 

 Blower Motor and the Fuel-Conveyor Motor Are Then Started and Fuel and Air Enter the 

 Combustion Furnace Which Is an Ordinary Locomotive Fire-Box with a Fire-Brick Floor 



places a piece of lighted oil-waste in the 

 furnace. Immediately following this he 

 starts the air-blower motor and the 

 fuel-con \e\-or motor. The screw-con- 

 \x'yoT forces the fuel into the fuel feeder, 

 where it meets the air driven by the 

 blower. The fuel and air are then dri\-en 

 through a commingler, and this mixture 

 then enters the combustion furnace, 

 which is the ordinary locomoti\e fire-box 

 fitted with a fire-brick floor in place of 

 grate bars, where the lighted oil-waste 

 ignites it. The fire-box is provided with 

 brick arches and air inlets. There is a 

 slag pan instead of the usual ash i^an. 



The regulating mechanism controlling 

 air and fuel is within reach of the fireman, 

 so he need never have occasion to leave 



T' 



The Wastage of Flying Machines 



In the Great War 

 HU'. English aeronautic periodicals 

 |)ul)lish fairly complete lists of 

 casualties sustained by the flying squad- 

 rons of the Allies as well as by those of 

 the Ciermans. In a single month on 

 the western front, the British brought 

 down sixteen German aeroplanes, the 

 French thirty.. The British losses, on 

 the other hand, were ten, and the French 

 twenty -eight. If machines are shot 

 down with such ease on both sides, the 

 wastage of aeroplanes in this war must 

 be enormous. No wonder that thou- 

 sands of men are employed in the 

 aeroplane factories of all the warring 

 countries to make up the losses. 



