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Scientific American, Vol. 12, No. 15 (April 1865) (1865)

leaf 4

An illustration from Scientific American, Vol. 12, No. 15 (April 1865), 1865, leaf 4
er; for this purpose it is usual to employ second piston passes, this is now instantly held fast a common wooden roller set in a frame and provided the ground, to prevent the entrance of moisture. One by two wedges driven into the cross-bar against the or more wind-wheels are placed above the roof,… … is at work, and prevent the flame from being blown wound evenly with this arrangement, for in drawing a single degree from 34° even from April till Octo- out by the force of the explosion through the touch- the cloth the operation of turning is impeded. In ber. hole. He gives increased pressure and…

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