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, 1912 - 245 стор. |
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Сторінка 17
... distance by which the valve overcovers the steam admission port - the distance the valve must be moved from an exact central position on its seat before the port begins to open to admit steam to the cylinder . Lead is the distance that ...
... distance by which the valve overcovers the steam admission port - the distance the valve must be moved from an exact central position on its seat before the port begins to open to admit steam to the cylinder . Lead is the distance that ...
Сторінка 24
... distance equal to the amount of outside , or steam , lap , before the cylinder could begin to receive steam through the admission port . So that valve - advance , or lead , will be the first re- quirement in remodelling the engine of ...
... distance equal to the amount of outside , or steam , lap , before the cylinder could begin to receive steam through the admission port . So that valve - advance , or lead , will be the first re- quirement in remodelling the engine of ...
Сторінка 25
... distance from the hub centre . Now , we find that the eccentric is more than 90 degrees from the main - pin , and that its advance that we have given has pushed the valve forward far enough so that the back - left port - is opened a ...
... distance from the hub centre . Now , we find that the eccentric is more than 90 degrees from the main - pin , and that its advance that we have given has pushed the valve forward far enough so that the back - left port - is opened a ...
Сторінка 26
... distance of lap plus lead . In Fig . 4 we have taken the engine illustrated in Fig . 2 , and interposed the double rocker - arms be- Indirect Valve Motion Engine Runs Forward FIG . 4. Simple Form of Steam Engine with Indirect Valve ...
... distance of lap plus lead . In Fig . 4 we have taken the engine illustrated in Fig . 2 , and interposed the double rocker - arms be- Indirect Valve Motion Engine Runs Forward FIG . 4. Simple Form of Steam Engine with Indirect Valve ...
Сторінка 28
... distance from eccentric to valve is not changed and its attach- ment has had no effect on the valve , which is central on its seat with both admission ports covered ; but if we move the lower end of the combination lever forward it will ...
... distance from eccentric to valve is not changed and its attach- ment has had no effect on the valve , which is central on its seat with both admission ports covered ; but if we move the lower end of the combination lever forward it will ...
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Загальні терміни та фрази
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 eccentric to valve Egide Walschaert equal equipped exact centre exactly exhaust forward full gear hub centre inches inside admission valves length link foot link fulcrum live steam lost motion lower end main crank-pin main rod main-pin main-valve moved pin hole piston valve port opening position quadrant radius bar radius rod return crank reverse lever reverse shaft rocker rocker-arm schaert shortened side steam chest steam lap Stephenson link motion stroke tion transmission bar trunnion 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