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acid alloy apparatus applied arrangement atmospheres August 17 baryta blast boiler bottom canal carbonic acid carriage cast cast-iron cause claim clouds coal Committee construction copper cylinder described diameter effect elastic experiments explosion feet fire flue force Franklin Institute fuel furnace fusible alloys gauge glass grains heat horizontal hydrogen improvement inches increased invention iron iron bowl Kennebec county lever lime machine manner means mercury metal mode motion mould nearly ē ē observed obtained October 27 opening oxide oxygen pass patent Pennsylvania Philadelphia pipe placed plate present pressure produced pump purpose quantity Rail Road rain remarks revolving roller sand screw shaft side slide ſē specification spring stationary point stove sulphuric sulphuric acid surface temperature thermometer thickness tion tube upper valve vaporization vessel weight wheel wind York zinc
Pāgina 158 - ... 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.
Pāgina 30 - 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.
Pāgina 248 - 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.
Pāgina 163 - ... it shall be the duty of the commissioner to renew and extend the patent, by making a certificate thereon of such extension...
Pāgina 96 - 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.
Pāgina 164 - 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.
Pāgina 162 - ... 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...
Pāgina 161 - 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.
Pāgina 161 - 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.