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 171
... cover both steam ports by blocking it or clamping the valve - stem ; not a great deal of knowledge or ingenuity was required ; simply follow the custom . 66 Now , however , the enormous weight of the main rod generally prohibits taking ...
... cover both steam ports by blocking it or clamping the valve - stem ; not a great deal of knowledge or ingenuity was required ; simply follow the custom . 66 Now , however , the enormous weight of the main rod generally prohibits taking ...
Сторінка 172
... over the ports . When such clamp was not at hand , it was formerly the rule , with a D - slide valve , to raise the steam chest cover and place retaining blocks ahead and back of the valve ; but it is 172 THE WALSCHAERT VALVE GEAR.
... over the ports . When such clamp was not at hand , it was formerly the rule , with a D - slide valve , to raise the steam chest cover and place retaining blocks ahead and back of the valve ; but it is 172 THE WALSCHAERT VALVE GEAR.
Сторінка 173
... cover on one of our big , modern engines , and it is not at all unsafe to neglect the inside blocking ; just centre the valve , and when steam is used it will put such a great weight upon the valve that its frictional resistance will ...
... cover on one of our big , modern engines , and it is not at all unsafe to neglect the inside blocking ; just centre the valve , and when steam is used it will put such a great weight upon the valve that its frictional resistance will ...
Сторінка 208
... cover forms the top side of the main - valve chamber and provides a by - pass connection between the exhaust passages , which equalizes the exhaust pressures . The cylinder and steam chest or valve chamber are one casting . The main ...
... cover forms the top side of the main - valve chamber and provides a by - pass connection between the exhaust passages , which equalizes the exhaust pressures . The cylinder and steam chest or valve chamber are one casting . The main ...
Сторінка 209
... Correct Locomotive Valve Gear of the Present Day ... William Wallace Wood. 14 Chest , with Steam - Chest Cover Removed . constructed ; it is balanced for all speeds and under. FIG . 44. - Top View of Hobart - Allfree Cylinder and Steam.
... Correct Locomotive Valve Gear of the Present Day ... William Wallace Wood. 14 Chest , with Steam - Chest Cover Removed . constructed ; it is balanced for all speeds and under. FIG . 44. - Top View of Hobart - Allfree Cylinder and Steam.
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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