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Autres éditions - Tout afficher
The Steam-engine: Being a Popular Description of the Construction and Action ...
Affichage du livre entier - 1840
The Steam-Engine: Being a Popular Description of the Construction and Action ...
Aucun aperçu disponible - 2015
acting action admitted air-pump applied atmospheric pressure attached attraction axis beam become bodies boiler boiling called carry cause circular closed coal cold common condenser connected considerable constructed contains continued cooled crank cylinder descend described diameter diminished direction effect elastic force engine enters equal expansion explosion extremity feet figure fire fixed foot formed fuel give heat Hence horse power hour increased iron length less lever liquid lower machine machinery manner matters means mercury miles minute motion moving power necessary particles passes piston position pounds present produce propelling proportion pump quantity raised raising water remain resistance rise safety-valve seen side solid space square inch steam steam-engine steamboat stroke successful sufficient supplied surface temperature termed tion tube turned vacuum valve vapour vessel voyage Watt weight wheel
Page 154 - This uncommon light first attracted the attention of the crews of other vessels. Notwithstanding the wind and tide were adverse to its approach, they saw with astonishment that it was rapidly coming...
Page 75 - I have taken a piece of a whole cannon, whereof the end was burst, and filled it three quarters full of water, stopping and screwing up the broken end, as also the touch-hole ; and making a constant fire under it, within twenty-four hours it burst, and made a great crack : — So that having a way to make my vessels, so that they are strengthened by the force within them, and the one to fill after the other, I have seen the water run like a constant fountain stream forty feet high.
Page 101 - One thing is тегу remarkable : as they at first were working, they were surprised to see the engine go several strokes, and very quick together, •when, after a search, they found a hole in the piston, which let the cold water in to condense the steam in the inside of the cylinder, whereas before they had always done it on the outside.
Page 75 - An admirable and most forcible way to drive up water by fire, not by drawing or sucking it upwards, for that must be as the philosopher calleth it, infra spheeram activitatis, which is but at such a distance. But this way hath no bounder, if the vessels be strong enough ; for I have taken a piece of a whole cannon, whereof the end was burst, and filled it...
Page 75 - One vessel of water rarified by fire driveth up forty of cold water, and a man that tends the work has but to turn two cocks; that one vessel of water being consumed, another begins to force and refill with cold water, and so successively; the fire being tended and kept constant, which the self-same person may likewise abundantly perform in the interim between the necessity of turning the said cocks.
Page 188 - ... means hereinafter mentioned or specified. When the steam is admitted in these engines between these weights and the valves, it acts equally...
Page 76 - ... into the next room ; and with so great ease and geometrical symmetry, that, though it work day and night, from one end of the year to the other, it will not require forty shillings reparation to the whole engine, nor hinder one day's work.
Page 144 - I considered how to produce rotative motions from them in the best manner ; and amongst various schemes which were subjected to trial, or which passed through my mind, none appeared so likely to answer the purpose as the application of the crank in the manner of the common turning-lathe (an invention of great merit, of which the humble inventor, and even its era, are unknown).
Page 154 - She had the most terrific appearance, from other vessels which were navigating the river, when she was making her passage. The first steam-boats, as others yet do, used dry pine wood for fuel, which sends forth a column of ignited vapour many feet above the flue, and whenever the fire is stirred, a galaxy of sparks fly off, and in the night have a very brilliant and beautiful appearance.