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7whence descending on the outer sides, they are secured to the axle on the right and left of the drum-wheel, about which another rope is now wound, and carried to the capstan. On the turning of the capstan, the drum-wheel and axle, and consequently the ropes fastened to it, are set in action, and raise the weights gently and without danger. But if a larger drum-wheel be affixed, either in the middle or on one of the sides, of such dimensions that men may walk therein, a more effectual power is obtained than the capstan will afford.
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