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 28
one eccentric only , and it is set , theoretically , at exactly right angles to the main
- pin - 90 degrees from it - and the lead is derived from the action of the piston ,
through suitable connections with the crosshead , the established lead remaining
...
one eccentric only , and it is set , theoretically , at exactly right angles to the main
- pin - 90 degrees from it - and the lead is derived from the action of the piston ,
through suitable connections with the crosshead , the established lead remaining
...
Сторінка 30
William Wallace Wood. of power in such a manner that its “ interference ” with the
valve will be in the proper direction . We must now disconnect the main rod from
the main - pin and move the cross - head forward until the piston is known to be ...
William Wallace Wood. of power in such a manner that its “ interference ” with the
valve will be in the proper direction . We must now disconnect the main rod from
the main - pin and move the cross - head forward until the piston is known to be ...
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
... hooking - up with the Walschaert gear does not increase the lead , because it
is obtained from the cross - head , and that is one of the desirable features that
recommend this gear . If the motion work has been correctly designed and “ set
up ...
... hooking - up with the Walschaert gear does not increase the lead , because it
is obtained from the cross - head , and that is one of the desirable features that
recommend this gear . If the motion work has been correctly designed and “ set
up ...
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 bell crank 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 latter 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 stroke tion train transmission turning valve motion valve-stem vertical Walschaert gear Walschaert valve gear weight wheel