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 25
... pin E the same 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 ...
... pin E the same 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 ...
Сторінка 26
... main - pin moves up - forward , the backward motion of the eccentric will be reversed by the rocker - arms and the valve will , as required , still have a forward motion , admitting live steam to the back end of the cylinder and ...
... main - pin moves up - forward , the backward motion of the eccentric will be reversed by the rocker - arms and the valve will , as required , still have a forward motion , admitting live steam to the back end of the cylinder and ...
Сторінка 27
... main - pin , in order to secure lead and overcome the outside lap of the valve ; if we now use the same eccentric the lead will be negative : instead of pushing the valve ahead , as it would do in Fig . 2 , it would pull the valve back ...
... main - pin , in order to secure lead and overcome the outside lap of the valve ; if we now use the same eccentric the lead will be negative : instead of pushing the valve ahead , as it would do in Fig . 2 , it would pull the valve back ...
Сторінка 28
... main - pin - 90 degrees from it - and the lead is derived from the action of the piston , through suitable connections with the cross- head , the established lead remaining unchanged throughout the different points of cut - off in both ...
... main - pin - 90 degrees from it - and the lead is derived from the action of the piston , through suitable connections with the cross- head , the established lead remaining unchanged throughout the different points of cut - off in both ...
Сторінка 30
... main rod from the main - pin and move the cross - head forward until the piston is known to be in the exact centre of the cylinder , and then connect the lower end of the combination lever ( still in a plumb perpendicular position ) ...
... main rod from the main - pin and move the cross - head forward until the piston is known to be in the exact centre of the cylinder , and then connect the lower end of the combination lever ( still in a plumb perpendicular position ) ...
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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 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