Iron: An Illustrated Weekly Journal for Iron and Steel Manufacturers, Metallurgists, Mine Proprietors, Engineers, Shipbuilders, Scientists, Capitalists ..., Svazek 22Perry Fairfax Nursey Knight and Lacey, 1835 |
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Strana 93 - Be it known that I, John Fitch, of Philadelphia, in the county of Philadelphia, the State of Pennsylvania, have invented a new and improved mode of preventing steam-boilers from bursting, and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.
Strana 361 - ... and with or partition of any chimney or flue, hereafter to be built or rebuilt, shall be built of sound materials, and the joints of the work well filled in with good mortar or cement, and rendered or stuccoed within; and also that every chimney or flue hereafter to be built or rebuilt in any wall, or of greater length than four feet out of any wall, not being a circular chimney or flue of twelve inches in diameter, shall be in every section of the same not less than fourteen inches by nine inches...
Strana 326 - Tis but to know how little can be known ; To see all others faults, and feel our own ; Condemn'd in business or in arts to drudge, Without a second, or without a judge. Truths would you teach, to save a sinking land ? All fear, none aid you, and few understand.
Strana 411 - ... rowlers, cillinders, or cones : as the prepared mass passes regularly through or betwixt these rowlers, cillinders, or cones, a succession of other rowlers, cillinders, or cones, moveing proportionably faster than the first, draw the rope, thread, or sliver, into any degree of fineness which may be required...
Strana 412 - Paul, a foreigner, poor and enterprising, made offers and bargains which he never fulfilled, and contrived, in the year 1738, to have a patent taken out in his own name for some additional apparatus...
Strana 411 - In the year 1730, or thereabouts, living then at a village near Litchfield, our respected father first conceived the project, and prepared to carry it into effect ; and in the year 1733, by a model of about two feet square, in a small building near...
Strana 367 - That the bottom of a floating solid should be made triangular ; as in that case it will meet with the least resistance when moving in the direction of its longest axis, and with the greatest resistance when moving with its broadside foremost.
Strana 34 - I closed the hole in the centre of the air pump plate by a screw, and for a receiver made use of a bell glass with a perforated neck furnished with a brass cap and a female screw, by means of which one of my valve cocks was attached. A communication between the bell and the chambers of my pump was established through the valve cock and a flexible lead pipe, in a mode analogous to that already described in the account of the valve cock.
Strana 38 - ... that consequently the pressure upon the wedges is greater than that on the segments ; in a right-angled wedge this difference is as 2 to 1, but the wearing is in no such proportion, nor is there in practice any perceptible difference at all ; which arises, we conjecture, from the following cause. — The cylinder being of cast-iron and the piston of a much softer and easier abraded metal, {an alloy of copper,) the only effect of the superior pressure of the wedges is to wear them away quicker...
Strana 192 - ... leaven of corn flour is found to answer best. With this it makes a perfectly uniform and spongy bread ; and when it is thoroughly baked, and has much crust, it has a much better taste of bread than what in times of scarcity is prepared from the bran and husks of corn.