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Presuming the vertical shaft and the horizontal arms of a Barker wheel to be filled with water under a head of sixteen feet, there would be a pressure of about seven pounds upon each superficial inch of surface within the cross arm, exerting an equal force in every direction. By opening an orifice at the sides of these arms equal to one inch of area, the pressure would at that point be relieved by the escape of the water, and the internal [40] pressure be unbalanced to that extent. In other words, opposite this orifice, and on the other side of the arm, there would be a force of seven pounds, which being unbalanced, acts as a propelling power to drive the wheel.

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Lawrence laughed silently. He seemed to be intensely amused about something. He took a flat brown paper parcel from his pocket.
ONE:Closer and closer together came the swift turbine propelled yacht and the surface-skimming hydroplane.

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THREE:Quickly he lowered the rope till the bulge of it showed that the bottom was reached. He wound up the rope again, and as he did so a grunt of satisfaction escaped him. It was far better than he had expected.4. Any force resulting from water rebounding from the vanes parallel to their face, or at any angle not reverse to the motion of the wheel, is lost.

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THREE:They constantly heard the boom, boom of the shells exploding near by, and each time thought that their last hour had struck. The gloomy cellar depressed them still more, and nobody really believed that there was any chance of being saved. So the44 little sisters prayed on, preparing each other for death, and looking for the approaching end in quiet resignation.

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  • FORE:He stood aside politely for the woman to pass. She led the way in her imperious fashion as if they had been honoured guests of hers. She carried her dingy dress magnificently. In the drawing-room, Lawrence drew the blinds so that they could see better. The garish light of day shone on Leon Lalage's pale face, and disclosed the deep black lines under her splendid eyes. Only the flick and tremor of her lips betrayed her feelings. With her hands folded in her lap she waited."I thought I could rely upon you," she said gratefully. "Mr. Isidore, you have taken a great load from my mind."

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  • FORE:Hear, mother, undisguised my whole resolve!The life preserver snapped out of his hand! Larry muttered, giving up his effort to locate the moving objects in the glass and using his unaided eyes to view the tragedyor whatever it would prove to be.

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  • FORE:Yes, admitted Larry, and we got to be friendly because we are crazy to be around airplanes and pilots, and Jeff let us be grease monkeys and help him get passengers, too.

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  • FORE:Cant we do anything at all? Sandy wondered desperately.Balmayne danced down the lane with impotent fury. Despite her peril and the fear that was in her heart, Hetty smiled. Here was a daring and audacious rascal engaged in some desperate and, no doubt, cunning scheme who was utterly baffled by a mere girl and a hairpin.

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THREE:Fifth.The range and power of the blows, as well as the time in which they are delivered, is controlled at will; this constitutes the greatest distinction between steam and other hammers, and the particular advantage which has led to their extended use.

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10JUNE2015

FORE:A leading principle in machinery of transmission that more than any other furnishes data for strength and proper proportions is, that the stress upon the machinery, whatever it may be, is inverse as the speed at which it moves. For example, a belt two inches wide, moving one thousand feet a minute, will theoretically perform the same work that one ten inches wide will do, moving at a speed of two hundred feet a minute; or a shaft making two hundred revolutions a minute will transmit four times as much power as a shaft making but fifty revolutions in the same time, the torsional strain being the same in both cases.

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20JUNE2015

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20APRIL2015

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THREE:Leona Lalage looked round her helplessly for the first time in her life. Maitrank stood there grinning like a hideous mask enjoying her confusion. He had come to enjoy this where a more sensitive man would have stayed away. Revenge to him was nothing unless he could feast his eyes upon it."It is possible," she cried aloud. "Fool not to have thought of it before. What better hiding-place could I have than in the Corner House!"

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"Do you mean to say you know anything about it?" Lawrence asked."I believe that it is my duty to take that task upon me, assisted by some well-known burgesses, who have undertaken to stand by me.In spiral gearing the line of force is at an angle of forty-five degrees with the bearing faces of the teeth, and the sliding movement equal to the speed of the wheels at their periphery; the bearing on the teeth, as before said, is one of line contact only. Such wheels cannot be employed except in cases where an inconsiderable force is to be transmitted. Spiral wheels are employed to connect shafts that cross each other at right angles but in different planes, and when the wheels can be of the same size.
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