 | William Parsons (3rd earl of Rosse.) - 1844 - 78 pages
...ex«rt no pressure or strain upon it. The weight on the lever L sinks only fifteen feet under tlie horizontal position, it then rests on the ground,...the chain. Then suppose the tube makes the angle of 309 F. with the horizon, and that it is required to elevate it, the windlass is turned, and the chain... | |
 | Jabez Hogg - Physics - 1853 - 390 pages
...rises or falls ; it is a segment of a circle, of which the chain I is the radius. NATURAL PHILOSOPHY. sufficiently heavy to descend when the windlass unrolls...chain. Then suppose the tube makes the angle of 30 degrees with the horizon, and that it is required to elevate it, the windlass is turned, and the chain... | |
 | Industry - 1855 - 424 pages
...rests on the ground, and is, of course, no load on the tube, which is, when this happens, 30 degrees above the horizon. Below this point the tube is sufficiently...chain. Then suppose the tube makes the angle of 30 degrees with the horizon, and that it is required to elevate it, the windlass is turned, and the chain... | |
 | Jabez Hogg - Physics - 1861 - 594 pages
...rests on the ground, and is, of course, no load on the tube, which is, when this happens, 30 degrees above the horizon. Below this point the tube is sufficiently...chain. Then suppose the tube makes the angle of 30 degrees with the horizon, and that it is required to elevate it, the windlass is turned, and the chain... | |
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F. with the horizon, and that it is required to elevate it, the windlass is turned, and the chain being shortened, the desired effect is produced; but the labour of this would be immense if the... 