Journal of the Franklin Institute, Volum 47;Volum 77Pergamon 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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Frases i termes més freqüents
66 date 66 Means acid action AgBr AgCl AgONO alloys angle angle-irons apparatus applied atmosphere boiler boiling bottom braces bromine carbon carbonic acid cast iron cent centre chemical chloride chord color construction copper cubic cylinder diameter distance ditto effect engine equal examined experiments explosion feet flue force formula Franklin Institute friction furnace Fusible Alloys fusible plugs Girard College girder give glass gun cotton heat hence Hirtenberg horizontal inventor iodine joint Journal length light load manufacture mean daily mechanical Messrs metal nitric acid observed obtained ordinary Patent Philadelphia pig iron pipes piston plates portion pressure produced proportion quantity ratio resistance rivets screw shell side silver solution steam steel strain surface condensers temperature thickness thread tion tons truss tube tyres valve vapor velocity vertical vessels weight wrought iron XLVII.-THIRD SERIES.-No
Passatges populars
Pàgina 216 - 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.
Pàgina 216 - HAMMER, now so generally introduced into this and other countries, of which they ara the assignees and sole Agents for the United States. Up to the present time there have been made by the Patentees in England, for that country and the Continent of Europe, between two hundred and fifty and three hundred hammers, for Government, Railway...
Pàgina 415 - ... vapour of the air which filled the Royal Institution theatre, during the delivery of the discourse, absorbed 90 or 100 times the quantity of radiant heat which was absorbed by the main body of the air of the room. Looking at the single atoms, for every 200 of oxygen and nitrogen there is about 1 of aqueous vapour.
Pàgina 288 - The intensity of the blow may be modified instantly by the attendant, so as to suit the work; and the Ram may in like manner be arrested in its descent at any point, so that it is more completely under control than any other form known. 3d, It may be adapted to any description of work, whether for hammering Mourns.
Pàgina 413 - Definiteness of conceptions, even though at some expense to delicacy, is of the greatest utility in dealing with physical phenomena. Indeed it may be questioned whether a mind trained in physical research, can at all enjoy peace, without having made clear to itself some possible way of conceiving of those operations which lie beyond the boundaries of sense, and in which sensible phenomena originate.
Pàgina 172 - ... pitted" in precisely the same manner as the second lot of marine boilers previously designated by the letter B. Exactly the same effects were being produced. These boilers were supplied with the same water over and over again, a small quantity of fresh water being added from time to time to make up for the loss. As the steam was passed only through iron pipes for melting the sugar, the damage to the boilers could not result either from the steam coming in contact with a soft metal, or from any...
Pàgina 399 - This -was analysed by a eudiometer, which I will presently describe, and proved to be nitrogen. The beads of gas, when viewed through a lens and micrometer scale at the same height in the tube, appeared as nearly as may be of the same size. No bubble of vapour was condensed completely, or without leaving this residual bubble. The experiment was frequently repeated, and continued until the water was so nearly boiled away that the oil, when disturbed by the boiling, nearly touched the platinum wire...
Pàgina 144 - Made principally to aid in ascertaining the Comparative Economic Efficiency of Steam used with different measures of Expansion, and the Absolute Cost of the Power obtained therefrom in Weights of Fuel and Steam ; the Causes and Quantities of the Condensations in the Cylinder ; the Economic Effect of...