Official Descriptive and Illustrated Catalogue, Volume 3 (Google eBook)

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Spicer brothers, 1851
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Page 992 - COLLEGE LIBRARY FROM THE BEQUEST OF CHARLES SUMNER CLASS OF 1830 Senator from Massachusetts FOR BOOKS RELATING TO POLITICS AND FINE ARTS...
Page 1438 - O' will, when such a connecting pipe has been applied, furnish the supply cylinder independently of other external communication, and the acting medium will perform a continuous circuit through the machine under this arrangement, the operation being in other respects as before described. It is evident that the several parts composing the improved engine may be arranged in various ways, and that the external form thereof may be greatly changed whilst its principle of operation remains substantially...
Page 1438 - It is particularly worthy of notice that the relative diameter of the supply and working cylinder will depend on the expansibility of the acting medium employed ; thus in using atmospheric air or other permanent gases, the difference of the area of the pistons may be nearly as two to one, whilst in using fluids (such as oils, which dilate but slightly), the difference of area should not much exceed one-tenth. I have next to notice that in employing any other medium than atmospheric air, it becomes...
Page 1440 - The massive sample of this ore was got out accidentally in the ordinary course of mining, at a single blast, from near the surface, on the brow of the range of hills in which the vein out-crops. The mine was opened only last spring, and with a small force, nearly 3,000 tons of ore were got out and brought down to the works of the New Jersey Exploring and Mining Company, which are situated on tide water, a few miles from New- York. The Morris canal furnishes ready and cheap transportation for the...
Page 1268 - ... employed directly and indirectly in the spinning mills is about 50,000. In addition to their own production of cotton yarn they import considerable from abroad, mainly from England. Most of their weaving is done by hand looms. The number of hands employed in cotton weaving is not less than 300,000. Switzerland ranks next to England, in comparison with the number of her population, in the production of woven and spun cotton ; it is likewise one of the countries that consumes the most. She has...
Page 1459 - A Series of Charts, with Sailing Directions, embracing surveys of the Farallones, Entrance to the Bay of San Francisco, Bays of San Francisco and San Pablo...
Page 1436 - Accordingly, whilst in the steam engine the caloric is constantly wasted by being passed into the condenser, or by being carried off into the atmosphere, in the improved engine, the caloric is employed over and over again, enabling me to dispense with the employment of combustibles, excepting for the...
Page 1438 - ... the heated air or other medium passing off from C, will now pass through the partially cooled wires in L, whilst the cold medium from the receiver will pass through the heated wires of M, and on entering H will have attained nearly the desired working temperature. In this manner the regenerators will alternately take up and give out caloric, whereby the circulating medium will principally become heated independently of any combustion after the engine shall have been once put in motion.
Page 1436 - ... increase of temperature ; the mode of applying the caloric being such that, after having caused the expansion or dilatation which produces the motive power, the caloric is transferred to certain metallic substances, and again re-transferred from these substances, to the acting medium at certain intervals...
Page 1438 - К is closed and the valve J again opened, and thus a continued reciprocating motion kept up. It will be evident that after a certain number of strokes the temperature of the wires or other matter contained in the regenerators will change, — that of M will become gradually increased, and that of L diminished. The position of the...

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