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action allow apparatus appears applied arrangement attached boat body boiler bottom carriage carried cause centre claim coal communication connected considered consists construction cylinder described direction drawing effect employed engine equal experiments fact feet fire fixed force frame fuel furnace give given greater heat improvements inches increase invention iron length less lever lower machine machinery manner manufacture matter means mechanical ment metal mode motion moved nature navigation object observed obtained Office passing patent piece pipe piston placed plate portion position practical present pressure produced quantity railway raised receive rollers screw shaft side six months space speed spring square steam stroke sufficient supply surface tion tube turned upper usual valve vessel weight wheels whole
Página 125 - I have also reason to believe that the power of the STEAM ENGINE may be applied to work the WHEELS, so as to give them a quicker motion, and consequently, to increase that of the ship. In the course of this summer, I intend to make the experiment; and the result, if favourable, shall be communicated to the public.
Página 192 - Islington, machinist, for an improved method or improved methods of supplying fuel to the fire-places or grates of steam-engine boilers, brewers' coppers, and other furnaces ; as well also to the fire-places employed in domestic purposes, and generally to the supplying of fuel to furnaces or fire-places, in such a manner as to consume the smoke generally produced in such furnaces or fire-places.
Página 341 - The only mode in which this could be attempted with any probability of success would be by a sort of compromise, all parties consenting to adopt a medium for the sake of common advantage. The average pitch and depth of the various threads used by the leading engineers would thus become the common standard, which would not only have the advantage of conciliating general concurrence, but would, in all probability, be nearer the true standard for practical purposes than any other. Messrs. Whitworth...
Página 343 - We allude to the general use of standard gauges, graduated to a fixed scale, as constant measures of size. It is quite practicable by such means to work to a common measure with a degree of accuracy sufficient for all ordinary purposes. Corresponding parts, instead of being got up one to another, might be prepared separately. The indefinite multiplication of sizes would thus be prevented, and the economy of the workshop simplified to an extent beyond calculation.
Página 342 - A constant proportion is thus established between the depth and the pitch of the thread. In calculating the former, a deduction is to be made for the quantity rounded off, amounting to one-third of the whole depth, that is, one-sixth from the top, and one-sixth from the bottom of the thread. Making this deduction, it will be found that the angle of 55° gives for the actual depth rather more than three-fifths, and less than two-thirds of the pitch. The precaution of rounding off, is adopted to prevent...
Página 125 - ... have also reason to believe that the power of the STEAM ENGINE may be applied to work the wheels, so as to give them a quicker motion, and consequently to increase that of the ship.
Página 256 - WILLIAM HICKLING BURNETT, of Ravensbourne Wood Mills, Deptford Creek, Gentleman, for improvements in machinery for cutting wood, and in apparatus connected therewith, part of which may be applied to other purposes.
Página 53 - The minds of the most incredulous were changed in a few minutes — before the boat had made the progress of a quarter of a mile the greatest unbeliever must have been converted. The man, who, while he looked on the expensive machine, thanked his stars that he had more wisdom than to waste his money on such idle schemes, changed the expression of his features as the boat moved from the wharf and gained her speed ; his complacent smile gradually stiffened - into an expression of wonder...
Página 132 - The boat was again put in motion. She continued to move on. All were still incredulous. None seemed willing to trust the evidence of their own senses.
Página 119 - ... converted either into steam or carbonic acid. The hydrogen so passing away is transparent and invisible ; not so, however, the carbon, which, on being so separated from the hydrogen, loses its gaseous character, and returns to its natural and elementary state of a black, pulverulent, and finely-divided body. As such, it becomes visible, and this it is which gives the dark colour to smoke. Not sufficiently attending to these details, we are apt to give too much importance to the presence of the...