The Model Locomotive Engineer, Fireman, and Engine-boy: Comprising a Historical Notice of the Pioneer Locomotive Engines and Their Inventors ...

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C. Lockwood and Company, 1896 - 258 páginas
 

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Página i - Mr. Reynolds has supplied a want, and has supplied it well. We can confidently recommend the book, not only to the practical driver, but to everyone who takes an...
Página 12 - Caledonia ! stern and wild, meet nurse for a poetic child, • land of brown heath and shaggy wood, land of the mountain and the flood, land of my sires!
Página 214 - Jf 2. From B as a centre, with a radius of four of the same parts, describe an arc supposed to pass through D. 3. From A as a centre, with a radius of five parts, describe an arc cutting the other arc at D. 4. Draw DB for the perpendicular required. This last method of solving the problem can be easily applied on a large scale for laying down perpendiculars on the ground. The numbers 3, 4, and 5 are, it is to be observed, taken to measure respectively the base, the perpendicular, and the hypotenuse...
Página 85 - I said to my friends that there was no limit to the speed of such an engine, provided the works could be made to stand.
Página 185 - ... is sufficient. When the lead is excessive, the steam is admitted so readily as to be momentarily compressed, and to cause, in some cases, an unfavourable pulsatory action of the steam. The total absence of lead likewise occasions an unsteady pulsatory action in the cylinder. If lead is deficient or wanting, the maximum pressure of steam in the cylinder is not attained until after a portion of the stroke is traversed by the piston.
Página 22 - A pebble in the streamlet scant Has turned the course of many a river : A dewdrop on the baby plant Has warped the giant oak forever.
Página 188 - Nos. 3 and 4, the process of successive condensation and re-evaporation is still more distinctly brought out. In these cases, the greater portion of the heat, engaged in the restoration of the steam during expansion, must have been absorbed by the cylinder, by condensation of the steam during admission.
Página 214 - Or, use a straight edge and triangle. Or, use a sheet of celluloid with a set of lines parallel to one edge and about И in.
Página 87 - ... a rattling noise. For when the leverage of one crank became greater than the other, the latter was propelled by the other through the intervening wheels ; but when the former approached towards the extremity of the stroke, its leverage became less and less, and the leverage of the latter became greater, as the angle between the connecting-rod and the crank increased ; and, at a certain point, the latter preponderated. When a change in the action took place, the former was then the propelled,...
Página 187 - No. 2, also, this takes place, to a small extent, for the first half of the curve, when the temperatures of the steam and the material of the cylinder become equal ; after this, as the pressure continues to fall, and the temperature of the steam with it, the curve rises and meets the standard curve at the end, in virtue of a partial re-evaporation of the steam previously precipitated, caused by the cylinder itself, which...

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