The Walschaert and Other Modern Radial Valve Gears for Locomotives: A Practical Treatise on the Locomitive Valve Actuating Mechanism Invented by Egide Walschaerts, with the History of Its Development and Its Evolution Into the Mechanically Correct Locomotive Valve Gear of the Present Day ...Norman W. Henley publishing Company, 1913 - 245 стор. |
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Сторінка 20
... engine , with fixed cut - offs and non - reversible , and it will be the engine in the Direct Valve Motion Engine Runs Forward FIG . 2. - The Simplest Form of Steam Engine ; Direct Valve Motion . rough - the rough ashlar - that we are ...
... engine , with fixed cut - offs and non - reversible , and it will be the engine in the Direct Valve Motion Engine Runs Forward FIG . 2. - The Simplest Form of Steam Engine ; Direct Valve Motion . rough - the rough ashlar - that we are ...
Сторінка 21
... engine to be running forward - to the right . But before going further it is best to explain how to take the expression , in hearing it said that an eccentric is " ahead " or " behind " the main crank - pin : Axle E B Go Ahead C Back up ...
... engine to be running forward - to the right . But before going further it is best to explain how to take the expression , in hearing it said that an eccentric is " ahead " or " behind " the main crank - pin : Axle E B Go Ahead C Back up ...
Сторінка 22
... engine would run forward . As the wheel revolved to the right eccentric B would follow in the same direction and one - fourth of a turn behind the main - pin , and be said to be " a quarter behind the main pin , ” which it always is ...
... engine would run forward . As the wheel revolved to the right eccentric B would follow in the same direction and one - fourth of a turn behind the main - pin , and be said to be " a quarter behind the main pin , ” which it always is ...
Сторінка 23
... engine could not move of its own volition , for two reasons : the valve being centred , all ports are covered and no steam would be admitted to the cylinder ; working singly , the engine would have to be " pinched , " or moved off the ...
... engine could not move of its own volition , for two reasons : the valve being centred , all ports are covered and no steam would be admitted to the cylinder ; working singly , the engine would have to be " pinched , " or moved off the ...
Сторінка 24
... engine backward , and of course the direction is fixed : it can only run that way . Besides having no power to turn the wheel when the main - pin is on the dead - centre regardless of how much pressure is in the cylinder , the other ...
... engine backward , and of course the direction is fixed : it can only run that way . Besides having no power to turn the wheel when the main - pin is on the dead - centre regardless of how much pressure is in the cylinder , the other ...
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90 degrees actuated admission port ahead Air Brake American Locomotive Company angle axle back end backward Baldwin Locomotive bell crank bination lever block boiler combination lever compression valve crosshead link cut-off D-slide valve dead centre diagrams direction disconnected distance driving wheels eccentric crank eccentric rod Egide Walschaert equal equipped exact centre exactly exhaust forward full gear Hobart-Allfree hub centre inches inside admission valves lap and lead length link foot link fulcrum live steam lost motion lower end main crank-pin main rod main valve main-pin moved pin hole piston valve port opening position quadrant radius bar radius rod reach rod return crank reverse lever reverse shaft rocker rocker-arm schaert shortened side steam lap Stephenson link motion stroke tion transmission bar upper end valve events valve motion valve rod valve stem valve-stem valves of inside vertical Walschaert eccentric Walschaert gear Walschaert motion Walschaert valve gear yoke