Journal of the Franklin InstituteFranklin Institute, 1846 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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Results 1-5 of 89
Page 21
... colors his silks and brocades grow pale . In short , his luxuries have for a century remained nearly stationary , while the comforts of his dependents have been increased in almost infinite degree . The struggle then amongst nations is ...
... colors his silks and brocades grow pale . In short , his luxuries have for a century remained nearly stationary , while the comforts of his dependents have been increased in almost infinite degree . The struggle then amongst nations is ...
Page 53
... color disappear from the liquor derived from the lixiviation of a small portion withdrawn from the furnace as de- scribed , that is , until the whole of the sulphate of copper and iron has been decomposed . When this has been effected ...
... color disappear from the liquor derived from the lixiviation of a small portion withdrawn from the furnace as de- scribed , that is , until the whole of the sulphate of copper and iron has been decomposed . When this has been effected ...
Page 54
... color , the calcination must be continued until the blueish or greenish color disappears from the solution , and it re- mains colorless , as above described ( when water is added , it assumes a whitish color . ) The operation may be ...
... color , the calcination must be continued until the blueish or greenish color disappears from the solution , and it re- mains colorless , as above described ( when water is added , it assumes a whitish color . ) The operation may be ...
Page 55
... color will nearly disappear from the liquor obtained . from the test ; and , when salt is added , chloride of silver will be at once thrown down , falling to the bottom of the liquor in thick white flakes : when this appearance is given ...
... color will nearly disappear from the liquor obtained . from the test ; and , when salt is added , chloride of silver will be at once thrown down , falling to the bottom of the liquor in thick white flakes : when this appearance is given ...
Page 81
... colors that would show well when in the water ; to this he would attach a line consid- erably exceeding the length of the vessel . This buoy should be passed forward , with plenty of spare line , to the bowsprit end , the end of the ...
... colors that would show well when in the water ; to this he would attach a line consid- erably exceeding the length of the vessel . This buoy should be passed forward , with plenty of spare line , to the bowsprit end , the end of the ...
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3RD SERIES.-No acid apparatus applied arrangement bars beam boiler bottom broad gauge calcined canal carbonic carbonic acid carriage centre claim coal color combination construction copper crown glass cutter cylinder depth desire to secure diameter effect engine equal experiments feet flanch flint glass flues frame FRANKLIN INSTITUTE fuel furnace gauge glass heat horse power improvement inches increased India rubber invention and desire iron length less letters patent lever machine magnetic manner manufacture means metal metres miles mill mode mordant motion narrow gauge obtained operation oxide pass Philadelphia pieces piston placed plate portion present pressure produced propeller proportion purpose quantity rail railway Road rods rollers screw secure by letters shaft ships side slide speed steam vessels steamers stove stroke substantially sufficient sulphur surface temperature Third Premium tion tons tube valve vapor velocity water wheel weight wheel whole wood York
Popular passages
Page 38 - What we claim as our invention and desire to secure by letters patent, is the combination of the materials in the general proportions above described, for making an adhesive plaster. "We also claim making plasters porous, or pervious to fluids, by perforating them with numerous minute holes.
Page 216 - Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is (d).
Page 327 - Office a written description of the same, and of the manner and process of making, constructing, compounding and using it, in such full, clear, concise, and exact terms as to enable any person skilled in the art or science to which it appertains, or with which it is most nearly connected, to make, construct, compound, and use...
Page 109 - Having thus fully described the nature of my improvements, in the manner of constructing cooking stoves, what I claim as new therein, and desire to secure by letters patent, is, first, the...
Page 252 - Having described our invention, what we claim therein as new and desire to secure by letters patent of the United States is — " The combination of a griping chuck, by which an article Statement of the Case.
Page 330 - What I claim as my invention, and which I desire to secure by letters patent, is the before described arrangement of the vibrating hand, in combination with the revolving cradles operated by the lever, and eccentric grooved wheel or plate at the head of the axle of the cradle.
Page 106 - ... my invention. But what I do claim, and desire to secure by letters patent, is — First.
Page 35 - 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.
Page 69 - All matter appears to be subject to the magnetic force as universally as it is to the gravitating, the electric and the chemical or cohesive forces...
Page 117 - ... what I claim therein as new, and desire to secure by letters patent, is the manner in which I have combined the...