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 27
... centre . To obtain lead with engines having a double rocker - arm and outside admission valves , as in Fig . 4 , the eccentric must be drawn nearer than 90 degrees to the main - pin : be less than a " quarter " from it . The return ...
... centre . To obtain lead with engines having a double rocker - arm and outside admission valves , as in Fig . 4 , the eccentric must be drawn nearer than 90 degrees to the main - pin : be less than a " quarter " from it . The return ...
Сторінка 30
... centre of the cylinder , and then connect the lower end of the combination lever ( still in a plumb perpendicular position ) with the cross - head by means of a short link - bar ; now draw the cross - head to the back end of the guides ...
... centre of the cylinder , and then connect the lower end of the combination lever ( still in a plumb perpendicular position ) with the cross - head by means of a short link - bar ; now draw the cross - head to the back end of the guides ...
Сторінка 31
... centre and the piston is at the front end of the cylinder , the eccentric will be at the lower quarter , and the valve would be once more centred on its seat - but for the alterative effect of that combination lever : its angle will be ...
... centre and the piston is at the front end of the cylinder , the eccentric will be at the lower quarter , and the valve would be once more centred on its seat - but for the alterative effect of that combination lever : its angle will be ...
Сторінка 33
... 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.
... 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.
Сторінка 34
... centre to the periphery ; one end of the radii is a fixed point , the forward end of the radius rod is " fixed " at a point on the combination lever - with its other end rotating about it , the back end of our radius rod will have a ...
... centre to the periphery ; one end of the radii is a fixed point , the forward end of the radius rod is " fixed " at a point on the combination lever - with its other end rotating about it , the back end of our radius rod will have a ...
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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