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 24
... wheel exactly its opposite in location - 90 degrees on the other side of the main - pin — a quarter- turn ahead of the crank with the wheel turning back- ward . This would now give the proper motion to the valve for running the engine ...
... wheel exactly its opposite in location - 90 degrees on the other side of the main - pin — a quarter- turn ahead of the crank with the wheel turning back- ward . This would now give the proper motion to the valve for running the engine ...
Сторінка 26
... wheel - right straight across , through the centre of the hub , to the " lower quarter " ; and as the main - pin moves up - forward , the backward motion of the eccentric will be reversed by the rocker - arms and the valve will , as ...
... wheel - right straight across , through the centre of the hub , to the " lower quarter " ; and as the main - pin moves up - forward , the backward motion of the eccentric will be reversed by the rocker - arms and the valve will , as ...
Сторінка 31
... wheel . It must be remembered that the valve is acted upon by two distinct forces : the main pro- pulsion , for its long travel , but this motion is qualified by the influence of the cross - head , exerted through the combination lever ...
... wheel . It must be remembered that the valve is acted upon by two distinct forces : the main pro- pulsion , for its long travel , but this motion is qualified by the influence of the cross - head , exerted through the combination lever ...
Сторінка 32
... wheel - a com- plete cycle of motion - but those four points were taken at times when the steam ports were either wide open or only opened the distance required for lead ; intermediately between those points occur the interesting phases ...
... wheel - a com- plete cycle of motion - but those four points were taken at times when the steam ports were either wide open or only opened the distance required for lead ; intermediately between those points occur the interesting phases ...
Сторінка 33
... to as the " radius rod . " The word radius is applied to the distance from the centre to the circumference of a circle : a spoke of a wheel , for instance , measured out from the hub centre to the 3 THE WALSCHAERT VALVE GEAR 33.
... to as the " radius rod . " The word radius is applied to the distance from the centre to the circumference of a circle : a spoke of a wheel , for instance , measured out from the hub centre to the 3 THE WALSCHAERT VALVE GEAR 33.
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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