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Updated: April 30, 2025
"Look here, carpenter David, there is only one way: three of us must be here with a rope fastened to this great root, and three others must work at a branch yonder. We shall have great leverage then, and we may be able to turn the trunk right over." "Want a screw-jack, sir," said the carpenter. "We must make screw-jacks of ourselves," cried Uncle Richard.
The ship was constructed with the especial design of carrying cotton, and the entire hold, with the exception of a very limited space reserved for passengers' luggage, is closely packed with the bales, The lading was performed with the utmost care, each bale being pressed into its proper place by the aid of screw-jacks, so that the whole freight forms one solid and compact mass; not an inch of space is wasted, and the vessel is thus made capable of carrying her full complement of cargo.
The spare gear of the Haliotis had been unusually complete, and two-and-twenty men, armed with screw-jacks, differential blocks, tackle, vices, and a forge or so, can look Kismet between the eyes without winking. The crew were ordered to replace the holding-down and shaft-bearing bolts, and return the collars of the thrust-block. When they had finished, Mr.
The lading was performed with the utmost care, each bale being pressed into its proper place by the aid of screw-jacks, so that the whole freight forms one solid and compact mass; not an inch of space is wasted, and the vessel is thus made capable of carrying her full complement of cargo. SEPTEMBER 30 to October 6.
The trolly is then run into the vault, and the water-tank containing the piña is lifted by screw-jacks, so as to raise the piña into the retort, in which position the tank is then supported by a cross-beam. The sublimed mercury is condensed and collected in the water; and on the completion of the process the tank is lowered, and the spongy or porous cone of silver is withdrawn from the retort.
"In fact," said Nicholl, laughing, "if they succeeded in suppressing gravitation, like pain is suppressed by anaesthesia, it would change the face of modern society!" "Yes," cried Michel, full of his subject, "let us destroy weight and have no more burdens! No more cranes, screw-jacks, windlasses, cranks, or other machines will be wanted."
The practice of forcing the parts of boilers together with violence, by means of screw-jacks, and drifts through the holes, should not be permitted; as a great strain may thus be thrown upon the rivets, even when there is no steam in the boiler. All rivets should be of the best Lowmoor iron.
When day followed day without any sign of hostility, not a man on board, save Suarez and Tollemache, paid much real heed to the shoreward peril. Walker, with his hammers and cold chisels, his screw-jacks and wrenches, was the center of interest. And Walker's swarthy visage wore a permanent grin, which presaged well for the fulfilment of his promise. Elsie devoted herself to the hospital.
He had foreseen that when the granary was full, and the screw-jacks were turned beneath the cost of living, there would probably be efforts made by unwashed, untutored, unenlightened mobs to rape his storehouse. So he had made the little platform at the top a veritable fortress of a place, such as a handful of men could hold against a hundred thousand.
When the machine has excavated as far in advance of itself as the length of the boom and that of the dipper-handle will permit, say about 8 feet, the car is again lowered to the track, the screw-jacks removed, and the car is moved forward about 8 feet by winding the rope upon the drum, the other end of the rope being attached to any suitable fixed object near the line of the track.
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