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 ... |
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Сторінка 24
This would now give the proper motion to the valve for running the engine
backward , and of course the direction is fixed : it can only run that way . Besides
having no power to turn the wheel when the main - pin is on the dead - centre ...
This would now give the proper motion to the valve for running the engine
backward , and of course the direction is fixed : it can only run that way . Besides
having no power to turn the wheel when the main - pin is on the dead - centre ...
Сторінка 25
eccentric of the Stephenson type would with its disk and strap around the axle ;
and in order to give this kind of an eccentric the advance necessary to secure
lead , or overcome the outside lap , with outside admission valves we must
lengthen ...
eccentric of the Stephenson type would with its disk and strap around the axle ;
and in order to give this kind of an eccentric the advance necessary to secure
lead , or overcome the outside lap , with outside admission valves we must
lengthen ...
Сторінка 31
It must be remembered that the valve is acted upon by two distinct forces : the
main propulsion , for its long travel , but this motion is qualified by the influence of
the cross - head , exerted through the combination lever , and which would give a
...
It must be remembered that the valve is acted upon by two distinct forces : the
main propulsion , for its long travel , but this motion is qualified by the influence of
the cross - head , exerted through the combination lever , and which would give a
...
Сторінка 38
If we should set the reverse lever in the centre notch of the quadrant and have the
engine moved by “ pinching , ” or towing , as before stated , the eccentric would
not give any motion to the link - block , 38 THE WALSCHAERT VALVE GEAR.
If we should set the reverse lever in the centre notch of the quadrant and have the
engine moved by “ pinching , ” or towing , as before stated , the eccentric would
not give any motion to the link - block , 38 THE WALSCHAERT VALVE GEAR.
Сторінка 39
not give any motion to the link - block , radius rod , nor valve , but the cross - head
would , by means of the combination lever , give the valve a short travel that
would be equal to twice the distance of lap plus lead . The connections from
cross ...
not give any motion to the link - block , radius rod , nor valve , but the cross - head
would , by means of the combination lever , give the valve a short travel that
would be equal to twice the distance of lap plus lead . The connections from
cross ...
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action admission port admission valves advance ahead American amount angle axle backward balanced block Brake broken built carried cause centre combination lever common compression connection correct cover crank crosshead cut-off cylinder dead diagrams direction disconnected distance eccentric rod effect engine equal equipped exactly exhaust forward frame front fulcrum give given hole illustrated inches inside admission lead length link motion link-block locomotive lower end main rod main-pin mechanism method moved movement necessary notch obtained opening opposite piece piston placed position pounds practical pressure quarter question radius rod reason received reference remove represented reverse lever road secure shaft short shortened shown side steam Stephenson link stroke tion train transmission turning valve motion valve rod valve-stem vertical Walschaert gear Walschaert valve gear weight wheel