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The old elephant hunter sat in a chair, nervously gripping the arms, and with a grim look on his tanned face. Mr. Swift was cool, as Ned, for they had made many trips in the air. Outside were Eradicate Sampson and Mrs. Baggert. "Here we go!" suddenly cried Tom, and he yanked over the lever that started the main motor and propellers. The Black Hawk trembled throughout her entire length.
Kress, like most Germans, set to the development of an idea which others had originated; he followed de la Landelle and Forlanini by fitting two superposed propellers revolving in opposite directions, and with this machine he achieved good results as regards horse-power to weight; Kimball, it appears, did not get beyond the rubber-driven model stage, and any success he may have achieved was modified by the theory enunciated by Berriman and quoted above.
In addition to these a very large number of propellers and sailing vessels were built, and canal boats almost without number. The mere list of crafts of one description and another, built by this firm, would take considerable space in our pages. In 1849, the firm, which had done so much important work in the ship yards, was dissolved and Mr.
The next moment Murgatroyd put his head up through the companion-way which led from the upper deck to the conning-tower, and said, in a tone whose calm indicated, as usual, resignation to the worst that could happen: "My Lord, two of those beasts, fishes or live balloons, or whatever they are, have come across the propellers.
Say, when I came aboard the Myra and they scrapped the Lizzie, I never guessed to get a full cargo. Well, I can load right down to the water line for this place alone all the time. No. Sachigo's a mighty big fixture in the trade of this coast. It's a swell proposition for us sea folk. It keeps our propellers moving all the time. They're bright folk, sure."
By a compressed air arrangement motive power is furnished the torpedo in transit for its propellers. A gyroscope keeps it on a plane and upright. A striker on the nose of the torpedo is released by a fan which revolves in the water. The nose of the torpedo strikes the side of the battleship and the compact jars the primer of fulminate of mercury.
"You still have plenty of time." So this was agreed to, and, after a look over the craft to make sure there were no defects, Mr. Vardon pulled over the lever of the starting motor. With a hum and a buzz, the propellers started, and this time the Abaris shot forward on the surface of the water, instead of up into the air. "She's going!" cried Paul. "She sure is doing it!" yelled Innis.
It seemed a waste of time to spend six good hours in a short 3,500 mile trip. There was nothing to do, nothing to see, except a slowly passing landscape ten miles below. No details could be distinguished, and the steady low throb of the engines, the whirring of the giant propellers, the muffled roar of the air, as it rushed by, combined to form a soothing lullaby of power.
One set of the turbines revolved the propellers so that they pushed, and the other set, turning them the other way, pulled the vessel backward one set revolving in a vacuum and doing no work, while the other supplied the power.
After the dying out of the wind they kept on, by the aid of their propellers, in the same direction in which it had been driving them, because, in the circumstances, one way was as good as another. The terrible discomfort of the President and his companions in the cabin of the aero was greatly relieved by the cessation of the wind, but still they were in a most unfortunate state.
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