A Practical Treatise on Rail-roads and Locomotive Engines ...: Including an Explanation of Every Patent that Has Hitherto Been Granted in England for Improvements in the Mechanism of Locomotion ...T. Kelly, 1837 - 216 Seiten |
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Häufige Begriffe und Wortgruppen
apparatus applied arrangement ascending attached axis axle axletree bars bearing boiler bolts cast-iron cause centre chain chair chamber Charles Dance chimney common road communication connecting rods construction contrivances crank shaft curves cylinders descending described diameter drawing driving wheels edge-rails effect employed experiments fastened feet fixed force fore wheels frame friction fuel furnace grooves Gurney heat hind wheels horizontal horse improvements inches inclined planes invention length lever Liverpool loaded locomotive engines machine machinery malleable iron means mechanical Messrs metal miles an hour miles per hour mode motion move pair of wheels pass patent periphery pipe piston rod placed plates pressure propelling pulley railroad rails railway render resistance revolve riage Robert Stevenson rollers rope round running wheels Sans Pareil screw shown side sleepers slide springs steam carriages steam-engine stone supported surface tons tubes turn universal joint upper valve velocity vertical waggons weight
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Seite 139 - The train consisted of 18 waggons, containing 135 bags and bales of American cotton, 200 barrels of flour, 63 sacks of oatmeal, and 34 sacks of malt, weighing altogether 51 tons 11 cwt. 1 qr.
Seite 27 - Certain mechanical means, by which the conveyance of coals, minerals, and other articles, is facilitated, and the expense attending the same rendered less than heretofore.
Seite 21 - W uneven, by projecting heads of nails or bolts, or cross grooves, or fittings to railroads, when required ; and that in cases of hard pull we cause a lever, bolt, or claw, to project through the rim of one or both of the said wheels, so as to take hold of the ground ; hut that in general the ordinary structure or figure of the external surface of these wheels will be found to answer the intended purpose.
Seite 76 - To account for their extraordinary freedom from rust, it is almost necessary to suppose, that some diminution takes place in the chemical affinity of the iron for the oxygen or carbonic acid. The continual smoothness in which they are kept, by the contact of the wheels, has the usual effect of polish, in presenting to the destroying influence a smaller surface to act upon. The black oxyde, or crust, which always remains upon rolled iron, appears to act as a defence against the oxydizing power of...
Seite 31 - On inspecting the drawing, it will be seen, that when the pistonrod is projected out from the cylinder, it will tend to push the end of the lever, or leg, a, from it, in a direction parallel to the line of the cylinder; but as the leg, ab, is prevented from moving backwards, by the end, b, being firmly fixed upon the ground, the reaction is thrown upon the carriage, and a progressive motion given to it ; and this will be continued to the end of the stroke. Upon the reciprocating...
Seite 31 - Whenever, therefore, the piston is at the extremity of the stroke, and one of the legs is no longer of use to propel the engine forward, the other, immediately on the motion of the piston being changed, is ready, in its turn, to act as a fulcrum or abutment for the action of the moving power, to secure the continual progressive motion of the engine. The feet are raised from the ground during the return of the legs...
Seite 97 - ... degrees. To cause the carriage wheels to run round the curves of the railway, without the usual destructive rubbing of their surfaces, the rails in those parts are made with several ribs or elevations, and the wheels of the carriages are consequently formed to correspond with those ribs, by their peripheries being grooved in like manner ; so that a wheel, in effect, possesses as many diameters as there are variations in the surface of its periphery, by which means it may be made to travel faster...
Seite 82 - FF, of the engines, and are used to force air into the water vessel, that its pressure may drive out, by a convenient pipe, the water into the boiler, at such times, and in such quantities as may be wanted.
Seite 33 - This endless chain, which is now solely used upon these kind of engines, consisted at first of one broad and two narrow links, alternately, fastened together at the ends with bolts ; the two narrow links were always on the outside of the broad link ; consequently, the distance they were separated laterally would be equal to the breadth of the broad link, which was generally about two inches, and their length three inches. The periphery of the wheels, fixed upon the axles of the engine...
Seite 19 - It exhibits in construction the most beautiful simplicity of parts, the most sagacious selection of appropriate forms, their most convenient and effective arrangement and connexion ; uniting strength with elegance, the necessary solidity with the greatest portability ; possessing unlimited power with a wonderful pliancy to accommodate it to a varying resistance; it may indeed be called THE STEAM-ENGINE.