Journal of the Franklin InstitutePergamon Press, 1891 Vols. 1-69 include more or less complete patent reports of the U. S. Patent Office for years 1825-1859. cf. Index to v. 1-120 of the Journal, p. [415] |
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acceleration acid action alloy alternating currents aluminum ammonia amount angle apparatus applied arsenic blast furnaces boiler buildings carbon cause cent centre coal coil coke color combustion Committee compound condensation construction containing copper crank cupellation CXXXII difference direction drop-leg effect elastic limit electric elongation engine experiments feet fire fire apparatus force Franklin Institute friction fuel furnace Galveston give gram gross tons heat horizontal increase jetty Journal loop magnetic manganese manganese steel manufacture ment metal method nickel nitric acid obtained output ovens oxide parallel Patent Philadelphia phosphor bronze pig iron pipe plate pounds practical present pressure produced Prof projectile pyroarseniate quadric quantity range red-shortness riser river salt silicon silver square inch steam steamloop sulphur Tanite tannin temperature tensile strength tests tion tube tungsten Unieux United velocity welding wheels wire
Popular passages
Page 139 - I am apt to believe that it will be celebrated by succeeding generations as the great anniversary festival. It ought to be commemorated as the day of deliverance, by solemn acts of devotion to God Almighty. It ought to be solemnized with pomp and parade, with shows, games, sports, guns, bells, bonfires, and illuminations, from one end of the continent to the other, from this time forward forevermore.
Page 182 - was a man of the highest integrity ; my mother, an excellent woman, was particularly known throughout the neighbourhood for her charitable donations. My father destined me from a child for the pursuits of polite learning, which I prosecuted with such eagerness, that, after I was twelve years old, I rarely retired to bed from my lucubrations till midnight. This was the first thing which proved pernicious to my eyes, to the natural weakness of which were added frequent headachs.
Page 184 - Spina, a native of Pisa, who died in the year 1313. In the Italian Dictionary, Delia Crusca, under the head of " Occhiale," or Spectacles, it is stated that Friar Jordan de Rivalto tells his audience, in a sermon published in 1305, that " it is not twenty years since the art of making spectacles was found out, and is indeed one of the best and most necessary inventions in the world.
Page 184 - English origin.) Pliny says that Nero the tyrant had a ring with a gem in it, which he looked through, and watched the swordplay of the gladiators, — men who killed each other to amuse the people, — more clearly than with the naked eye. So Nero had an opera-glass. So Mauritius the Sicilian stood on the promontory of his island, and could sweep over the entire sea to the coast of Africa with his nauscopite, which is a word derived from two Greek words, meaning "to see a ship.
Page 183 - Somewhat reluctantly the scholars said, " It is not a stone ; we hardly know what it is." Cicero said that he had seen the entire Iliad, which is a poem as large as the New Testament, written on a skin so that it could be rolled up in the compass of a nut-shell. Now, this is imperceptible to the ordinary eye. You have seen the Declaration of Independence in the compass of a quarter of a dollar, written with glasses. I have to-day a paper at home, as long as half my hand, on which was photographed...
Page 161 - The Committee on Science and the Arts constituted by the Franklin Institute of the State of Pennsylvania, for the promotion of the Mechanic Arts, to whom was referred for examination a Solar Compass, invented by WM.
Page 477 - A practical treatise for the stationary engineer, telling how to erect, adjust and run the principal steam engines in use in the United States. Describing the principal features of various special and well-known makes of engines: Temper Cut-off, Shipping and Receiving Foundations.
Page 188 - ... of a picture is immediately made manifest by a corresponding discord in the arrangement of its light and shade, or, as artists term it, the effect. I find, at times, many of my brother-engravers in doubt how to translate certain colours of pictures, which to me are matters of decided certainty and ease.
Page 122 - ... first. From this time the operation is conducted on the hearth or open furnace in the same way as in making ordinary steel, care being at the same time taken to continually protect the bath from oxidation by means of a layer of slag or cinder, which is renewed as required, and also to take precautions to prevent redshortness in the metal before the final introduction of the recarbonizing and manganiferous silico-spiegel iron or ferromanganese. The steel...