Journal of the Franklin Institute, Band 29;Band 59

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Vols. 1-69 include more or less complete patent reports of the U. S. Patent Office for years 1825-59.
 

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Seite 49 - An act establishing a Mint and regulating the coins of the United States...
Seite 206 - 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 36 - I subject these fatty or oily bodies to the action of water at a high temperature and pressure, so as to cause the elements of those bodies to combine with water and thereby obtain at the same time free fat acids and solution of glycerine.
Seite 395 - ... has no reference to the subject of our inquiries. " It will be seen by the third line, that about two-thirds of a second elapsed in every case before the current became apparent at the distance of 768 miles, indicating a velocity of about 1000 miles a second ; but the most interesting part appears to be, that this velocity is sensibly uniform for all intensities from 31 cells to 500.
Seite 355 - J ft., to 6 tons, falling 6 feet. They can, therefore, confidently urge its merits upon the trade, and are provided with certificates in its favor from many parties, (who have one or more in use,) which will be shown upon application. The advantages of this Hammer over all other forms...
Seite 42 - ... referred to Newton, who (as is shown by his letters to Bentley) had very strong convictions of the physical nature of the lines of gravitating force, yet in what he publicly advanced stopped short at the law of action of the force, and thence deduced his great results ; and also to Arago, who, discovering the phenomena of magnetic rotation, yet not perceiving their physical cause, had that philosophic power of mind which enabled him to refrain from suggesting one. WALTERS
Seite 439 - Ram falling vertically, the surfaces of the bitts upon it and the anvil are always parallel, giving facilities for flattening a ball or faggot of any thickness; and the fall being far greater than that of any helve hammer, a much thicker mass may be placed under, without choking it.
Seite 132 - TM' N' 123. THURSDAY; MAY 8, 1755. • Dapibus suprenri Grata Testudo Jovis. Hon. IF there be truth in the common maxim, ' That he deserves best of his country, who can make two blades of grass grow where only one grew before...
Seite 37 - The exit-valve i is so loaded that when the heating-tubes ddd are at the desired working temperature, and the pump c is not in action, it will not be opened by the internal pressure produced by the application of heat to the mixture, and therefore when the pump c is not in action, nothing escapes from the valve...

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