Journal of the Franklin InstituteFranklin Institute, 1842 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 12
... fall of the tide in Cape Henlopen road is five feet , the highest spring tides , in moderate weather , seven feet , whilst the highest storm tides have been known to attain an altitude of ten feet and more above the plane of low water ...
... fall of the tide in Cape Henlopen road is five feet , the highest spring tides , in moderate weather , seven feet , whilst the highest storm tides have been known to attain an altitude of ten feet and more above the plane of low water ...
Seite 16
... falling ten feet below it ; then it is mani- fest that though whilst the wave is upheaving near the margin of the work , it may not act very powerfully upon substances in front of its base , yet the moment it begins to subside , if it ...
... falling ten feet below it ; then it is mani- fest that though whilst the wave is upheaving near the margin of the work , it may not act very powerfully upon substances in front of its base , yet the moment it begins to subside , if it ...
Seite 20
... fall of the tide , but from the above reasoning it would appear that such a rise and fail as will allow a wave of the maximum height of twenty feet to exert its greatest energy ; or a difference of ten feet between the top water of ...
... fall of the tide , but from the above reasoning it would appear that such a rise and fail as will allow a wave of the maximum height of twenty feet to exert its greatest energy ; or a difference of ten feet between the top water of ...
Seite 21
fall than ten feet will not increase , whilst a less one would certainly diminish , the effects of the assailing waves . The section of the Delaware Breakwater , as planned by the Com- missioners appointed by the President of the United ...
fall than ten feet will not increase , whilst a less one would certainly diminish , the effects of the assailing waves . The section of the Delaware Breakwater , as planned by the Com- missioners appointed by the President of the United ...
Seite 29
... Falls twenty - five feet . Water equals half a cubic foot per second , or thirty cubic feet per minute . 624 lbs . × 30 = 1875 lbs . , falling per minute , multiplied by twenty - five feet fall - 46,875 lbs . falling one foot per minute ...
... Falls twenty - five feet . Water equals half a cubic foot per second , or thirty cubic feet per minute . 624 lbs . × 30 = 1875 lbs . , falling per minute , multiplied by twenty - five feet fall - 46,875 lbs . falling one foot per minute ...
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Seite 172 - 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 130 - 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.
Seite 132 - The declaration was in the usual form, and the defendants pleaded thereto, first, that they were not guilty; secondly, that the plaintiff was not the...
Seite 174 - 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 351 - Such oath may be made before any person within the United States authorized by law to administer oaths, or, when the applicant resides in a foreign country, before any minister, charge d'affaires, consul, or commercial agent holding commission under the Government of the United States...
Seite 195 - ... but what I do claim, and desire to secure by letters patent, is the peculiar construction of the heat reflecting oven, as described, in combination with the two semi-circular stoves, with funnel-shaped caps, for saving fuel and cooking expeditiously, as before described.
Seite 119 - What I claim as my invention, and which I desire to secure by letters patent, is the...
Seite 261 - After describing the different parts of the machine, he sums up by saying; having thus fully described the nature and operation of my machine for breaking and screening coal, what I claim as new therein, and desire to secure by letters patent is, the manner in which I have arranged and combined with each other Ihe breaking rollers and the screen; the respective parts being formed and operating substantially as herein set forth and made known.
Seite 350 - ... any new and original design for a manufacture, whether of metal or other material or materials ; or any new and original design for the printing of woollen, silk, cotton, or other fabrics; or any new and original design for a bust, statue, or...
Seite 349 - AN ACT In addition to an Act to promote the progress of the Useful Arts, and to Repeal all Acts and parts of Acts heretofore made for that purpose.