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Drive these upstarts off of Indian Smoke Range and bring my mine back into my own hands! These fool engineers have found no gold in the ridge, but it's there -waiting for me. And -now!" He pumped the handle of the magneto vigorously. In another instant the spark traveled. From underground there came a sudden rocking, followed, after a breathless interval, by a loud, crashing boom.
Precisely the same action takes place in our magneto-igniter, but, instead of a multitude of tiny sparks, we produce one at a time, at definite intervals, viz., at the commencement of each explosion stroke. In the later form of magneto machines there is a soft iron sleeve between the magnet poles and the armature.
This made the telephone commercial, as the magneto telephone receiver of Bell was too weak to be used as a transmitter commercially. It was the same with the phonograph. The great defect of that instrument was the rendering of the overtones in music, and the hissing consonants in speech.
That would take but a few minutes. Whenever any one came too near Sambo had but to swim out a little way and tread water until he could return to his job. When, at last, all was complete, Sambo would attach a wire from the bombs to a wire moored at a stated point under water, and then swim in, work his magneto, and touch the whole thing off from a safe hiding place on shore.
Humming an old plantation melody the negro reached his concealed magneto, then stood up for a brief moment, staring seaward in the direction from which he had just come. His garments dripped water; his whole appearance was bedraggled, yet there was something utterly shaggy, majestic, in this huge specimen of the human race.
Ignition was by means of a high-tension magneto of the two-spark pattern, and with a total weight of 300 lbs. the maximum output was 102 brake horse-power, giving a weight of just under 3 lbs. per horse-power. One of the most successful of the two-stroke cycle engines was that designed by Mr G. F. Mort and constructed by the New Engine Company.
Ten minutes later Tom Reade abandoned his work, rather well satisfied. "Now, when we fire the blasts, we shall move some rock, I believe," he smiled. The wires were attached, and all hands went back, most of them going considerably to the rear of the man at the magneto battery. A rocking explosion followed. Tom was among the first to run forward. At the heading were heaps of rock.
He had to get that cycle going and be off in pursuit, that was all there was to it. "Give me a steady light," he directed. "I think he's probably disconnected the wires of the magneto that's what I'd do if I wanted to put a motor out of business in a hurry. And if that's all, there's no great harm done." "I don't see how you know all that!" wondered Jack.
Remember that part of your job is to stand by me if we're followed and fired upon." Josh and his companion carefully made their way back over the crust. Dolph Gage waited until he saw them to be a sufficient distance away. "Now, work away, my magneto beauty" muttered Gage, exultantly. "Do your work, straight and true.
This time the huge negro pumped at the handle of the magneto until he was all but out of breath. Several dozen shoves he had administered before he halted, let go of the magneto and raised himself to his full, majestic height. "Some black witch hab done gwine wish a big hoodoo on me!" grunted the negro suspiciously. "Dis am do fust time dat de magernetto gwine back on me like dis!"
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