The Mechanic's Magazine, Museum, Register, Journal and Gazette, Band 37Robertson, 1842 |
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Seite 9
... considered to be so great in wooden ships as to require correc- The operation may be shortly described as fol- lows : -Having fully completed the equipments of the ship , especially as regards the iron - work , and having determined the ...
... considered to be so great in wooden ships as to require correc- The operation may be shortly described as fol- lows : -Having fully completed the equipments of the ship , especially as regards the iron - work , and having determined the ...
Seite 19
... considered the most economical results Thus we see that what would here have been called economy , might be the ruin of the manufacturer ; for although each pound of coal would , per se , appear to do the largest work of evaporation ...
... considered the most economical results Thus we see that what would here have been called economy , might be the ruin of the manufacturer ; for although each pound of coal would , per se , appear to do the largest work of evaporation ...
Seite 21
... considered as an index of intensity of heat , every observer of the process will be satisfied that the most luminous aspect of the flame exists at the distance of many feet from the place where the air is admitted , and not un- til ...
... considered as an index of intensity of heat , every observer of the process will be satisfied that the most luminous aspect of the flame exists at the distance of many feet from the place where the air is admitted , and not un- til ...
Seite 23
... considered advisable to collect from all sources to which we had access , ac- counts of the remarkable disturbances be- ginning with 1840 and 1841 , arranging them in chronological order , and publishing them in volumes by themselves ...
... considered advisable to collect from all sources to which we had access , ac- counts of the remarkable disturbances be- ginning with 1840 and 1841 , arranging them in chronological order , and publishing them in volumes by themselves ...
Seite 27
... considered , therefore , that Professor Wheatstone had proved , that , at least in one form , the specula of tele- scopes might be made by voltaic precipita- tion . His own idea was , that it might be possible to whiten the surface of ...
... considered , therefore , that Professor Wheatstone had proved , that , at least in one form , the specula of tele- scopes might be made by voltaic precipita- tion . His own idea was , that it might be possible to whiten the surface of ...
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Häufige Begriffe und Wortgruppen
acid angle annuity anthracite apparatus applied Argand burner atmosphere axle Blackwall boiler bottom Bude Light carbonic acid carriages cause centre chimney chlorine cistern coal column combustion communication construction copper crank cylinder diameter distance ditto ditto effect engine equal experiments feet flues force friction fuel furnace Galignani give glass heat holes improvements inches invention iron J. C. Robertson J. R. HILL length lever light Liverpool locomotive London machine machinery manufacture matter means mechanical ment Messrs metal miles mode motion observed obtained paddle-wheels paper pass patent pipe piston plate present value pressure principle produced propeller pump purpose quantity rails railway readers resistance rope screw shaft ship side six months square steam steam-engine stroke Stuckey's supply surface tion tube valve velocity vessel weight wheel wire wire rope wood Ystalyfera
Beliebte Passagen
Seite 369 - 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 588 - ... any new and original design for a bust, statue, or bas relief or composition in alto or basso relievo, or any new and original impression or ornament, or to be placed on any article of manufacture, the same being formed in marble or other material, or any new and useful pattern...
Seite 374 - An account of the waste or increase of the Land on any part of the coast of Great Britain, the nature of the Soil, the direction of the Tides, Currents, Rivers, Estuaries, &c., with the means adopted for retarding or preventing the waste of the land.
Seite 496 - When no unguent is interposed, the friction of any two surfaces (whether of quiescence or of motion) is directly proportional to the force with which they are pressed perpendicularly together ; so that for any two given surfaces of contact there is a constant ratio of the friction to the perpendicular pressure of the one surface upon the other.
Seite 466 - ... 2. On repeating this simple experiment, I find that it is necessary for the production of a good effect to use dissimilar metals ; for instance, a piece of gold or platina on a plate of copper or of silver will make a very decided image, whereas copper or silver on their respective plates...
Seite 341 - We are of opinion that if the result produced by such a combination is either a new article, or a better article, or a cheaper article to the public, than that produced before by the old method, that such combination is an invention or manufacture intended by the statute, and may well become the subject of a patent.
Seite 468 - I feel convinced that we have to do with some thermic influence, and that it will eventually be found that some purely calorific excitement produces a molecular change, or that a thermo-electric action is induced which effects some change in the polarities of the ultimate atoms of the solid.
Seite 347 - ... to the health. But as it approaches the metropolis, it becomes loaded with a quantity of filth, which renders it disgusting to the senses, and improper to be employed in the preparation of food.
Seite 588 - ... manufacture, not known or used by others before his, her, or their invention or production thereof, and prior to the time of his, her, or their application for a patent therefor, and who shall desire to obtain an exclusive property or right therein to make, use, (and sell) and vend the same, or copies of the same, to others, by them to be made, used, and sold, may make application in writing, to the Commissioner of Patents, expressing such desire : and the Commissioner, on due proceedings had,...
Seite 468 - Magazine for October 1840, I mentioned some instances in which I had copied printed paper and engravings on iodized paper by mere contact and exposure to the influence of calorific rays, or to artificial heat. I then, speculating on the probability of our being enabled by some such process as the one I then named, to copy pictures and the like, proposed the name of THERMOGRAPHY, to distinguish it from Photography.