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 27
... short- ened to secure lead . And this proves that with any kind of valve motion where but one eccentric is used , lead cannot be satis- factorily derived from advancing or receding the position of that eccentric on the main - shaft or ...
... short- ened to secure lead . And this proves that with any kind of valve motion where but one eccentric is used , lead cannot be satis- factorily derived from advancing or receding the position of that eccentric on the main - shaft or ...
Сторінка 30
... short link - bar ; now draw the cross - head to the back end of the guides again , and re - connect the main rod to the main - pin ; we have now developed the engine far enough to be represented by the sketch in Fig . 5 ; the angle ...
... short link - bar ; now draw the cross - head to the back end of the guides again , and re - connect the main rod to the main - pin ; we have now developed the engine far enough to be represented by the sketch in Fig . 5 ; the angle ...
Сторінка 31
... short travel to the valve even if the eccentric should be disconnected . When the crank - the main - pin- reaches the upper quarter where its leverage force is greatest the lower end of the combination lever is at the middle of its ...
... short travel to the valve even if the eccentric should be disconnected . When the crank - the main - pin- reaches the upper quarter where its leverage force is greatest the lower end of the combination lever is at the middle of its ...
Сторінка 33
... short- ening the valve travel will , further , permit the com- plete reversion of the direction in which the engine will run . For this we will cut the eccentric rod at about the point marked X in Fig . 5 , and that part of the rod that ...
... short- ening the valve travel will , further , permit the com- plete reversion of the direction in which the engine will run . For this we will cut the eccentric rod at about the point marked X in Fig . 5 , and that part of the rod that ...
Сторінка 39
... short travel that would be equal to twice the distance of lap plus lead . The connections from cross - head and valve are made to opposite ends of the combination lever , and it is plain to see that when the piston is at either end of ...
... short travel that would be equal to twice the distance of lap plus lead . The connections from cross - head and valve are made to opposite ends of the combination lever , and it is plain to see that when the piston is at either end of ...
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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 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