Journal of the Franklin Institute of the State of Pennsylvania for the Promotion of the Mechanic Arts: Devoted to Mechanical and Physical Science, Civil Engineering, the Arts and Manufactures, and the Recording of American and Other Patent InventionsFranklin Institute, 1836 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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Seite 7
... copper and iron under dif- ferent circumstances . 2. The extension to practice , by the introduction of different quantities of water , under different circumstances of the metals . VII . To determine , by actual experiment , whether ...
... copper and iron under dif- ferent circumstances . 2. The extension to practice , by the introduction of different quantities of water , under different circumstances of the metals . VII . To determine , by actual experiment , whether ...
Seite 39
... copper , tin or bismuth , it will be proper to subject the amalgam to the action of a single acid that will dissolve the baser metal and not the gold ; for if tin , zinc or bismuth , or some of the other metals be combined with gold by ...
... copper , tin or bismuth , it will be proper to subject the amalgam to the action of a single acid that will dissolve the baser metal and not the gold ; for if tin , zinc or bismuth , or some of the other metals be combined with gold by ...
Seite 59
... Copper , and Zine ; John Bouis , Baltimore , Maryland , June 26 . This improvement is very imperfectly described ; the apparatus used for bending the edges of the plates is not well represented , nor is any thing particularly pointed ...
... Copper , and Zine ; John Bouis , Baltimore , Maryland , June 26 . This improvement is very imperfectly described ; the apparatus used for bending the edges of the plates is not well represented , nor is any thing particularly pointed ...
Seite 75
... copper , and iron . The first experiments were made on the fusing point , on various specimens of common tin : this tin showed , by reagents , a trace of iron and of copper , as impurities . The fusing point of grain tin is 442 ° F ...
... copper , and iron . The first experiments were made on the fusing point , on various specimens of common tin : this tin showed , by reagents , a trace of iron and of copper , as impurities . The fusing point of grain tin is 442 ° F ...
Seite 82
... copper , wholly immersed in the oil . The first portions of fluid metal which had oozed from both the first and second plates , melted at betwen 221 and 223 degrees , Fah . , being solid at the lower , and perfectly fluid at the higher ...
... copper , wholly immersed in the oil . The first portions of fluid metal which had oozed from both the first and second plates , melted at betwen 221 and 223 degrees , Fah . , being solid at the lower , and perfectly fluid at the higher ...
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Beliebte Passagen
Seite 156 - ... shall fully explain the principle, and the several modes in which he has contemplated the application of that principle or character, by which it may be distinguished from other inventions, and shall particularly specify and point out the part, improvement, or combination which he claims as his own invention or discovery.
Seite 325 - Be it known that I, John Fitch, of Philadelphia, in the county of Philadelphia, the State of Pennsylvania, have invented a new and improved mode of preventing...
Seite 28 - 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, two reflecting telescopes, made by Mr.
Seite 246 - 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.
Seite 161 - ... it shall be the duty of the commissioner to renew and extend the patent, by making a certificate thereon of such extension...
Seite 94 - If nature has made any one thing less susceptible than all others of exclusive property, it is the action of the thinking power called an idea, which an individual may exclusively possess as long as he keeps it to himself; but the moment it is divulged, it forces itself into the possession of every one, and the receiver cannot dispossess himself of it.
Seite 162 - And be it further enacted, That there shall be provided, for the use of said office, a library of scientific works and periodical publications, both foreign and American, calculated to facilitate the discharg'e of the duties hereby required of the chief officers therein, to be purchased under the direction of the Committee of the Library of Congress.
Seite 160 - ... tending to prove that the description and specification filed by the plaintiff, does not contain the whole truth relative to his invention or discovery , or that it contains more than is necessary to produce the described effect; which concealment or addition shall fully appear to have been made for the purpose of deceiving the public...
Seite 159 - And in case of his death, or any assignment by him made of the original patent, a similar right shall vest in his executors, administrators, or assignees.
Seite 159 - And the patent, so reissued, together with the corrected description and specification, shall have the same effect and operation in law, on the trial of all actions hereafter commenced for causes subsequently accruing, as though the same had been originally filed in such corrected form, before the issuing out of the original patent.