Iron: An Illustrated Weekly Journal for Iron and Steel Manufacturers, Metallurgists, Mine Proprietors, Engineers, Shipbuilders, Scientists, Capitalists ..., Volume 38

Front Cover
Perry Fairfax Nursey
Knight and Lacey, 1843 - Industrial arts

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Page 238 - ... subtending the obtuse angle, is greater than the squares of the sides containing the obtuse angle, by twice the rectangle contained by the side upon which, when produced, the perpendicular falls, and the straight line intercepted without the triangle, between the perpendicular and the obtuse angle. Let ABC be an obtuse-angled triangle, having the obtuse angle ACS; and from the point A let AD be drawn (I.
Page 345 - When no unguent is interposed, the amount of the friction is, in every case, wholly independent of the extent of the surfaces of contact ; so that the force with which two surfaces are pressed together being the same, their friction is the same, whatever may be the extent of their surfaces of contact.
Page 521 - With Plates. Two Volumes. Octavo. 32s. On Thunder Storms, and on the Means of Protecting Buildings and Shipping against the Effects of Lightning. By Sir W.
Page 160 - Martin's-lane, gentleman, for improvements in combining materials to be used for cementing purposes, and for preventing the passage of fluids, and also for forming or constructing articles from such compositions of materials.
Page 62 - Ibs. The gunpowder was in bags, placed in boxes : loose powder was sprinkled over the bags, of which the mouths were opened, and the bursting charges were in the centre of the main charges. The distance of the charges from the face of the cliff was from 60 to 70 feet. It was calculated that the powder, before it could find a vent, must move 100,000 yards of chalk, or 200,000 tons. It was confidently expected that it would move one million.
Page 249 - I entirely agree in the view taken, and for the reason so luminously expressed by my noble and learned friend on the woolsack. If we are of opinion, first, that the law has been mistaken, and under a misapprehension of it, it has been erroneously delivered by the judge to the jury ; and if we are, secondly, of opinion that the misdirection in point of law, the mistake in point of law, committed by the learned judge, had a direct tendency, I may almost say an inevitable tendency, to mislead the jury...
Page 274 - This consideration shows, that in order to obtain a sufficient quantity of surface to sustain great weights in the air, the extension ought not to be made in one plane but in parallel planes one above the other at a convenient distance, so.
Page 265 - Gun powder is too dangerous, but would, at considerable expense, effect the purpose; but who would take the double risk of breaking their necks or being blown to atoms? Sir Humphrey Davy's plan of using solid carbonic acid, when again expanded by heat, proved a failure in the hands of our most ingenious engineer, Sir M. Isambard Brunei. As all these processes require nearly the same quantity of caloric to generate the same degree of power, I have for some time turned my own attention to the use,...
Page 249 - I never heard it before questioned that the notorious public use of the invention before the granting of letters patent, though it may have been discontinued, is sufficient to invalidate the letters patent. Then, my lords, the remaining question for consideration is this, and it is an important one, whether, if the learned judge laid down the law incorrectly to the jury, this was calculated to mislead the jury ? (His lordship then...
Page 420 - ... selection of the materials, before pure iron could be obtained ; some of the Low Moor iron, the good quality of which was universally admitted, had been made into blistered steel, but although the springs made with it appeared perfect, it was said that they did not answer so well as those made with steel from charcoal iron . The Sheffield manufacturers required that steel should possess " nature and body ;" the first quality to enable it to be rolled and drawn out without cracking, and the second...

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