A Treatise on the Steam Engine in Its Application to Mines, Mills, Steam Navigation, and Railways
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action air-pump amount appears applied atmosphere attached bars beam bearings becomes body boiler bottom breadth cause centre coal common connecting consequently constant construction cover crank cubic cylinder depth described diameter direction distance divide eccentric effect elastic employed engine equal example expansion experiments feet fire flue foot force furnace give given greater half heat horse power inches increased iron length less lever locomotive means mechanical Messrs motion moving Multiply nearly necessary passing pipe piston plate position practice preferable pressure prevent proper proportion pump quantity raised represented resistance result ring round rule Scale screw shaft side space square square inch steam stroke suppose surface temperature thickness tubes usually valve velocity vessel weight wheel
Page 3 - I have seen the water run like a constant fountain stream forty feet high ; one vessel of water rarefied by fire driveth up forty of cold water. And a man that tends the work is but to turn two cocks, that one vessel of water being consumed, another begins to force and re-fill 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 22 - In his temper and dispositions he was not only kind and affectionate, but generous, and considerate of the feelings of all around him, and gave the most liberal assistance and encouragement to all young persons who showed any indications of talent, or applied to him for patronage or advice.
Page 3 - ... 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 31 - The motions of bodies included in a given space are the same among themselves, whether that space is at rest or moves uniformly forwards in a right line without any circular motion.
Page 117 - The volume of any gas is inversely proportional to the pressure to which it is subjected.
Page 46 - Let 17 times the length of the grate in inches be divided by the square root of the height of the chimney in feet, and the quotient is the area for the aperture at the top of the chimney in inches.
Page 176 - To shew that the resultant thrust on any plane surface under fluid pressure is equal to the weight of a column of the fluid whose base is the area of the surface and whose height is the depth of the centre of gravity of the surface.
Page 3 - ... 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...
Page 21 - ... power of understanding, which extracted something precious out of all that was presented to it. His stores of miscellaneous knowledge were immense, — and yet less astonishing than the command he had at all times over them. It seemed as if every subject that was casually started in conversation with him, had been that which he had been last occupied in studying and exhausting ; —such was the copiousness, the precision, and the admirable clearness of the information which he poured out upon...
Page 10 - I call the steam vessel, must during the whole time the engine is at work be kept as hot as the steam that enters it, first, by enclosing it in a case of wood, or any other materials that transmit heat slowly; secondly, by surrounding it with steam or other heated bodies; and thirdly, by suffering neither water or any other substance colder than the steam to enter or touch it during that time.