Journal of the Franklin InstitutePergamon Press, 1864 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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66 date action amount angle annealing apparatus applied atmosphere boiler Bourdon gauge Boyle carbonic acid cast iron cause chain cables chord coal coal gas compressed construction cylinder diameter disk wheels distance effect elasticity employed engine equal equations experiments explosion F₂ Fahr feet fire flame flue force formula frame Franklin Institute furnace fusible Fusible Alloys gases gauge give given glass graphite gun cotton hammer heat hydro-carbon hydrogen increased instance Journal length light liquid load locomotive London manufacture marsh gas material means mechanical mercury metal millimetres motion obtained ordinary Patent pieces pipe piston plates Ponts-et-Chaussées portion pressure produced quantity railway rivets shearing stress side specific gravity square inch steam Steam Hammer strain strength stroke surface temperature thickness tion tons tube tyre vacuum valve vapor velocity vertical vessel weight wrought iron XLVIII.-THIRD SERIES.-No
Popular passages
Page 134 - I employ the steam after it has acted in the first vessel to operate a second time in the other, by permitting it to expand itself, which I do by connecting the vessels together, and forming proper channels and apertures, whereby the steam shall occasionally go in and out of the said vessels. Thirdly, I condense the steam, by causing it to pass in contact with metallic substances, while water is applied to the opposite side.
Page 198 - But further, these more and less mobile, or light and heavy forms of matter, have a singular relation connected with equality of volume. Equal volumes of two of them can coalesce together, unite their movement, and form a new atomic group, retaining the whole, the half, or some simple proportion of the original movement and consequent volume. This is chemical combination. It is directly an affair of volume, and only indirectly connected with weight. Combining weights are different, because the densities,...
Page 200 - Ibs. of stearine is consumed, 72-2 grammes (2^- ounces) of magnesium would be required. The magnesium wire can be easily prepared by forcing out the metal from a heated steel press having a fine opening at bottom ; this wire might be rolled up in coils on a spindle, which could be made to revolve by clockwork, and thus the end of the wire, guided by passing through a groove or between rollers, could be continually pushed forward into a gas or spirit lamp flame in which it would burn.
Page 360 - Church, Philadelphia.) ESTABLISHED IN 1836. Instruction given in CHEMISTRY, MINERALOGY, and GEOLOGY, by LECTURES and PRACTICE.with especial reference to ANALYSIS, MANUFACTURES, AND MEDICINE. Analysis made of Ores, Minerals, Guanos, Waters, and articles of commerce and manufacture. Opinions given on chemical questions.
Page 360 - Plans are particularly adapted to roads bavins heavy grades and abrupt curves. The temporary track connecting the Eastern and Western divisions of the Virginia Central Railroad, having grades of 295 feet rise per mile, and curves of 300 feet radius, has been successfully worked for two years past by six-wheel D Engines of ouj make.
Page 198 - The molecule or system is reached which is affected by heat, the diffusive molecule, of which the movement is the subject of observation and measurement. The diffusive molecules are also to be supposed uniform in weight, but to vary in velocity of movement, in correspondence with their constituent atoms. Accordingly the molecular volumes of different elementary substances have the same relation to each other as the subordinate atomic volumes of the same substances. But further, these more and less...
Page 144 - Ibs., falling 1$ ft., to 6 tons, falling 6 feet. They can, therefore, confidently urge its merits upon the trade, and are provided with certificates in its favor from many parties, (who have one or more in use,) which will be shown upon application. The advantages of this Hammer over all other forms...
Page 72 - I take this occasion to state to you, that for several years past I have been acquainted with the manner in which you have conducted your business as Patent Solicitor. This has always been highly creditable to yourself, and satisfactory to the Patent Office.