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, 1840 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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Page 4
... side of the channel are neither the only nor even the first inventors of the Steam Engine . This at least appears to me to be proved by the pas- sages which I now submit to the readers of the Annuaire . I feel sure , at all events , of ...
... side of the channel are neither the only nor even the first inventors of the Steam Engine . This at least appears to me to be proved by the pas- sages which I now submit to the readers of the Annuaire . I feel sure , at all events , of ...
Page 26
... side of the base of the frustrum , and c = a side of the top . Then in the general formula b = at = c2 and m 2 = a + c a + c X 2 2 or m = a + c 4 2 hence 4 m = a + c2 = a2 + 2 ac + c2 . Substituting these values the general formula be ...
... side of the base of the frustrum , and c = a side of the top . Then in the general formula b = at = c2 and m 2 = a + c a + c X 2 2 or m = a + c 4 2 hence 4 m = a + c2 = a2 + 2 ac + c2 . Substituting these values the general formula be ...
Page 28
... side , all average with the outer cutting on that side , and their distances apart divided by two ( or averaged with 0 , ) give the corresponding distances of the cuttings which answer to them upon the mid - section . But the averages ...
... side , all average with the outer cutting on that side , and their distances apart divided by two ( or averaged with 0 , ) give the corresponding distances of the cuttings which answer to them upon the mid - section . But the averages ...
Page 35
... side , = D and d re- E ment , ) E ; the depth at - from the = 2 spectively ; and the ratio of the side slopes = r ; the following is the formula given , + E ( D + d ) = area . Erd2 + 2E + 2r ( D - d ) Er D2 2E - 2r ( D - d ) ...
... side , = D and d re- E ment , ) E ; the depth at - from the = 2 spectively ; and the ratio of the side slopes = r ; the following is the formula given , + E ( D + d ) = area . Erd2 + 2E + 2r ( D - d ) Er D2 2E - 2r ( D - d ) ...
Page 51
... side scrapers , or buckets , which ex- tend from side to side , hinged by one edge to the platform , the other edge being capable of being opened and closed . This platform may be suspend- ed between scows , and let down and raised by ...
... side scrapers , or buckets , which ex- tend from side to side , hinged by one edge to the platform , the other edge being capable of being opened and closed . This platform may be suspend- ed between scows , and let down and raised by ...
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Popular passages
Page 115 - 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 steam-boilers from bursting, and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.
Page 287 - General, who is a member of the Cabinet of the President of the United States: but, like the other cabinet officers, receives only the moderate salary of 6000 dollars.
Page 98 - 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.
Page 25 - Whenever, through inadvertence, accident, or mistake. and without any fraudulent or deceptive intention, a patentee has claimed more than that of which he was the original or first inventor or discoverer...
Page 18 - 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 83 - A description and draught of a new-invented machine for carrying vessels or ships out of or into any harbour, port, or river, against wind or tide, or in a calm.
Page 305 - Now know ye, that in compliance with the said proviso, I, the said William Graham, do hereby declare the nature of the said invention, and the manner in which the same is to be performed...
Page 11 - I have taken a piece of a whole cannon, whereof the end was burst, and filled it three quarters full of water, stopping and screwing up the broken end, as also the touchhole, and making a constant fire under it ; within twenty-four hours it burst, and made a great crack...
Page 25 - Office; and it shall thereafter be considered as part of the original specification to the extent of the interest possessed by the claimant and by those claiming under him after the record thereof.
Page 25 - The specifications and claim in every such case shall be subject to revision and restriction in the same manner as original applications are.