Journal of the Franklin Institute, Band 138Elsevier, 1894 Vols. 1-69 include more or less complete patent reports of the U. S. Patent Office for years 1825-59. |
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... Standard arithmetic ,. Bailey . Mental arithmetic , Greaves . Elementary hydrostatics , Chronicle fire tables for 1894 , . Weisbach - Herrman - Dahlstrom . Mechanics of hoisting machinery , etc. , MacCord . Mechanical drawing , Fennel ...
... Standard arithmetic ,. Bailey . Mental arithmetic , Greaves . Elementary hydrostatics , Chronicle fire tables for 1894 , . Weisbach - Herrman - Dahlstrom . Mechanics of hoisting machinery , etc. , MacCord . Mechanical drawing , Fennel ...
Seite 1
... of the large " wave comparer , " which has recently been used with such great success by Professor Michelson in his determination of the standard meter in VOL . CXXXVIII . I terms of the wave length of light , this same JOURNAL.
... of the large " wave comparer , " which has recently been used with such great success by Professor Michelson in his determination of the standard meter in VOL . CXXXVIII . I terms of the wave length of light , this same JOURNAL.
Seite 4
... standard edge ; such , for example , as an actual metal standard , or a mercury surface . The construction of another standard especially for this purpose involved considerable expense , which it was desir- able to avoid . Besides , in ...
... standard edge ; such , for example , as an actual metal standard , or a mercury surface . The construction of another standard especially for this purpose involved considerable expense , which it was desir- able to avoid . Besides , in ...
Seite 5
... standard , is as near a geometrical straight line as it is possible to approach by any physical method , being what is termed a ray of light in the lan- guage of geometrical optics . More explicitly stated , the method consists in ...
... standard , is as near a geometrical straight line as it is possible to approach by any physical method , being what is termed a ray of light in the lan- guage of geometrical optics . More explicitly stated , the method consists in ...
Seite 16
... standard , an important consideration when it becomes a question of making standards six to ten feet in length . Errors due to flexure are corrected in the process itself , it being only necessary that the edge be tested when sup ...
... standard , an important consideration when it becomes a question of making standards six to ten feet in length . Errors due to flexure are corrected in the process itself , it being only necessary that the edge be tested when sup ...
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acid ammonia amount apatite apparatus applied average balloon boiler building burners carbon carbonic acid carriage cellulose cent chemical coal color colorimeter combustion condensation considerable construction cost course curve CXXXVIII cylinder depth determined diameter earth edge efficiency electric light expansion experiments feet fixtures Franklin Institute free-board fuel furnace give given heat hence Hollidaysburg horse-power hour inches increase invention inventor iron Kennett Square length lime load Lock Haven machine machinery magnesium manufacture material mathematics matter maximum means mechanical ment metal method monthly motor observed obtained OLSEN & CO operation oxide patent Philadelphia phosphate phosphoric acid pipes pounds practice precipitation present pressure produced pump quantity ratio ship soda solution square standard steam engine steel straight edges supply surface taken temperature tg ẞ tion TOOL STEEL tube vessel wastes Weather Bureau weight Wellsboro York
Beliebte Passagen
Seite 433 - And, he gave it for his opinion, that, whoever could make two ears of corn, or two blades of grass, to grow upon a spot of ground where only one grew before, would deserve better of mankind, and do more essential service to his country, than the whole race of politicians put together.
Seite 34 - I intend in many cases to employ the expansive force of steam to press on the pistons, or whatever may be used instead of them, in the same manner as the pressure of the atmosphere is now employed in common fire-engines.
Seite 441 - The Government then of the United States can claim no powers which are not granted to it by the Constitution; and the powers actually granted must be such as are expressly given, or given by necessary implication.
Seite 307 - Mendeleeff, which states that the properties of the elements are periodic functions of their atomic weights.
Seite 443 - Any person who has invented or discovered any new and useful art, machine, manufacture, or composition of matter...
Seite 356 - With the standards of the people plunging through the thunder-storm; Till the war-drum throbbed no longer, and the battle flags were furled In the Parliament of man, the Federation of the world.
Seite 439 - Provided also, and be it declared and enacted, That any declaration before mentioned shall not extend to any letters patents and grants of privilege for the term of fourteen years or under, hereafter to be' made, of the sole working or making of any manner of new manufactures within this realm...
Seite 440 - ... any manner of new manufactures within this realm to the true and first inventor and inventors of such manufactures, which others at the time of making such Letters...
Seite 440 - ... and grants shall not use, so as also they be not contrary to the law nor mischievous to the state, by raising prices of commodities at home, or hurt of trade, or generally inconvenient, the said fourteen years to be accounted from the date of the first letters...
Seite 443 - ... not patented or described in any printed publication in this or any foreign country before his invention thereof, or more than two years prior to his application, and not in public use or on sale in this country for more than two years prior to his application, unless the same is proved to have been abandoned, may, upon payment of the fees required by law and other due proceedings had.