Journal of the Franklin Institute, Volume 38Pergamon Press, 1844 Vols. 1-69 include more or less complete patent reports of the U. S. Patent Office for years 1825-59. Cf. Index to v. 1-120 of the Journal, p. [415] |
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angle apparatus applied April arch arranged atmospheric railway attached award axle bars boiler bottom calcined cast-iron Certificate of Honorable claim coal color combination committee Conn consists constructed copper Cornwall cylinder deposited described desire to secure diameter edge effect employed exhibited experiments feet fire chamber flue Franklin Institute friction furnace glass hammer heat Honorable Mention horizontal improvement inches inclined inclined plane invention iron June 11 letters patent lever machine manner manufacture March 13 March 20 Mass means melted metal mode motion operation oven oxide paddles paper passes Philadelphia pieces pipe piston placed plane plate pounds present produced propeller puddling furnace pump purpose pyramid quantity railway reverberatory furnace rollers screw secure by letters shaft side Silver Medal sliding specific gravity specimens steam engine steel stone stove surface tion tons tube upper valve vessel weight wheel wrought-iron York
Popular passages
Page 237 - What we claim as our invention, and desire to secure...
Page 116 - Having thus described the nature of my invention, and the manner of performing the same, I would have it understood that I do not confine myself to the details...
Page 370 - I went to Liverpool, to plan a line to Manchester. I there pledged myself to attain a speed of ten miles an hour. I said I had no doubt the locomotive might be made to go much faster, but we had better be moderate at the beginning.
Page 50 - ... blotting-paper, alternately; but if time can be allowed, soaking in water alone will have the effect in twelve or twenty-four hours, according to the thickness of the paper. It is essential to the success of the fixing process, that the paper be in the first place thoroughly penetrated by the hyposulphite, and the sensitive matter dissolved ; and next, that the hyposulphite compounds be effectually removed. Unless these salts...
Page 369 - I said to my friends that there was no limit to the speed of such an engine, provided the works could be made to stand.
Page 21 - ... in which case the vat appears yellow. By the use of soda ashes, (which have about 46 per cent, of carbonate of soda,) instead of common soda, half the quantity will produce the same effect. Pearlash may likewise be employed, if the price will admit of it ; and fine sharps may be used instead of bran.
Page 49 - As soon as the paper is wetted all over, unless the picture appear immediately, it is to be exposed to the radiant heat 'from an iron, or any similar body, held within an inch or two by an assistant. It ought to be held vertically, as well as the paper ; and the latter ought to be moved, so as to prevent any one part of it becoming dry before the rest. As soon as the picture is sufficiently brought out, wash it immediately in clean water to remove the gallo-nitrate...
Page 206 - 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 48 - The paper is now to be dried; but while wet, do not on any account touch or disturb the prepared surface with " blotting-paper," or with anything else. Let it merely be suspended in the air, and, in the absence of a better expedient, it may be pinned across a string by one of its corners. When dry it may be smoothed by pressure. It is now
Page 229 - Mr. Rennie was of opinion, from his examination of the subject, that there existed no sufficient evidence to establish the knowledge or use of the arch among the Greeks. Mr. Page presented two sketches...