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Larry, giving no sign that he had heard Dan's growling answer, drove his scoop into the coal, and with a swinging thrust spread its heaped load evenly over the glowing bed in the fire-box. He closed the fire-door with a quick slam, for in a pitching boiler-room burning coal can fall from an open furnace as suddenly as new coal can be thrown into it. "So, you're back," Dan sneered.
The first flue past the actual furnace shown with ordinary dead-plate, raking fire-bars, ashpit, fire-door, and ashpit door for regulating draught has walls 4-1/2 in. thick; above, smaller bricks, 3 in. wide; but in a larger apparatus, 9 in. and 4-1/2 in. respectively would be required. The quarries between flues and air spaces are 24 in. by 24 in. by 3 in., with rebated joints.
It seemed to him like watching a locomotive storming across country in the dark a mile between each glare of the open fire-door: but this locomotive could talk, and the words shook and stirred the boy to the core of his soul. At last Cheyne pitched away the cigar-butt, and the two sat in the dark over the lapping water. "I've never told that to any one before," said the father. Harvey gasped.
"Stir her up," ordered the engineer, and nodded when his comrade swung back the fire-door and hurled in coal. Then he turned to Hardie. "We're losing no time. She's running to beat the Imperial Limited clip, and the track's not worked down yet into its bed." Hardie, looking about for a few moments, thought the speed could not safely be increased.
I'd die happy if I could catch one of thim in the act and he wasn't too big for the fire-door." Torrance looked grave. "Another? That's the second this week. If this " "Indade, it was another. Ye didn't think it was the same rail I've been putting down every day for six years or so. When I fix a rail it stays, it does."
He ended a stream of oaths, and rested the scoop ready for his throw. "I'll learn yuh, yuh snivelin' " The ship rolled deep. Dan jerked the fire-door open "yuh snivelin' shrimp!" He glared at Larry as he made the pass. He missed the opening. His shovel struck hard against the boiler front. The jar knocked Dan to the floor, pitched that moment at its steepest angle.
The tubes slope upwards from the chimney end, where the heat is less, to the fire-door end, where the heat is fiercer, and a good circulation is thus assured. The Babcock and Wilcox boiler is the highest development of this system, which has proved very successful, and may be recommended for model boilers of all sizes.
Then a quick jerk of the fire-door chain, a quick heave of the shovel, and the door was snapped shut before the floor rolled up again. Making one of these hurried passes, Larry swayed on tired legs. He managed the toss and was able to close the door before he fell hard against Dan. His sullen enemy instantly launched a new tirade, fiercer, more blasphemous, than any before.
Somebody in there moaned with pain, and somebody else could be seen crouching over what seemed the prone body of a dead man; a lusty voice blasphemed; and the glow under each fire-door was like a pool of flaming blood radiating quietly in a velvety blackness. A gust of wind struck upon the nape of Jukes' neck and next moment he felt it streaming about his wet ankles.
Everything seemed to be worked out all right, except that they had the fire-door opening the wrong way and the brake-valve couldn't be reached but many a good builder did that twenty years ago. I was impressed with the beauty of the drawings they were like lithographs, and one, a perspective, was shaded and colored handsomely. I complimented him on them.
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