Journal of the Franklin Institute, Volume 9Vols. 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 80
How much mechanical force is required to move a given weight of train , along a given gradient , at a given speed , was a question of which the solution was essential to sound engineering , but the profession had long felt that they ...
How much mechanical force is required to move a given weight of train , along a given gradient , at a given speed , was a question of which the solution was essential to sound engineering , but the profession had long felt that they ...
Page 114
Many glasses are perceptibly attacked by a prolonged boiling with water , and a fortiori by acid and alkaline solutions ; thus the bottle glass is frequently attacked by the tartar which is found in the wine .
Many glasses are perceptibly attacked by a prolonged boiling with water , and a fortiori by acid and alkaline solutions ; thus the bottle glass is frequently attacked by the tartar which is found in the wine .
Page 136
He regarded all common glass as examples of solution , rather than of chemical combination . Borate of lead , and sillicate of lead , if fused in small quantities , so that they cooled quickly , were transparent , but if fused in masses ...
He regarded all common glass as examples of solution , rather than of chemical combination . Borate of lead , and sillicate of lead , if fused in small quantities , so that they cooled quickly , were transparent , but if fused in masses ...
Page 137
... alternating with solutions of the ammonio - tartrate , or ammonio - citrate , of iron , * the latter solutions ... by the following process : A bath being prepared by pouring a small quantity of solution of pernitrate of mercury ...
... alternating with solutions of the ammonio - tartrate , or ammonio - citrate , of iron , * the latter solutions ... by the following process : A bath being prepared by pouring a small quantity of solution of pernitrate of mercury ...
Page 138
At the last meeting I announced a mode of producing , by means of a solution of silver , in conjunction with ferro - tartaric acid , a dormant picture brought out into a forcible negative impression by the breath , or moist air .
At the last meeting I announced a mode of producing , by means of a solution of silver , in conjunction with ferro - tartaric acid , a dormant picture brought out into a forcible negative impression by the breath , or moist air .
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acid action amount apparatus appears applied arrangement attached body boiler bottom carried cast cause cent claim close coal color combination committee connected consists constructed containing cylinder deposited described desire direction distance effect employed engine equal exhibited experiments feet fire force frame furnace give given glass hand heat hour improvement inches increase invention iron joint known length less letters lever light lower machine manner manufacture material means metal method miles mode moved nature observed obtained operation pass patent piece pipe placed plate position Premium prepared present pressure produced proportion quantity railway receive road rollers screw secure shaft side slide solution spring steam substantially sufficient sugar surface temperature Third tion tube turning upper valve vessel weight wheel whole wood York
Popular passages
Page 258 - 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 43 - Happy is the man that findeth wisdom, and the man that getteth understanding. For the merchandise of it is better than the merchandise of silver, and the gain thereof than fine gold.
Page 153 - Committee appointed to inquire into the merits of the atmospheric system of railway have examined the matters to them referred, and have agreed to the following Report. Your Committee have given their best attention to this interesting subject.
Page 105 - ... constructed and arranged substantially in the manner and for the purpose herein set forth.
Page 305 - Ocean, the first thing which strikes us is, that, the north-east and south-east monsoons, which are found the one on the north and the other on...
Page 371 - I claim the manner in which the bricks are received, compressed, and delivered ; but what I do claim as my invention, and which I desire to secure by letters patent, is the...
Page 266 - 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 177 - ... with the solid portion of the coal. From the chemical changes which take place in the combination of the hydrogen with oxygen, the bulk of the products is found to be to the bulk of the atmospheric air required to furnish the oxygen, as 10 is to 11.
Page 99 - Having thus fully described my invention, what I claim therein as new, and desire to secure by letters patent, is...
Bibliographic information
| Title | Journal of the Franklin Institute, Volume 9 Volumes 282-287 of American periodical series, 1800-1850 |
| Contributor | Franklin Institute (Philadelphia, Pa.) |
| Publisher | Pergamon Press, 1845 |
| Original from | the University of Michigan |
| Digitized | 11 Sep 2007 |
| Export Citation | BiBTeX EndNote RefMan |