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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Результати 6-10 із 31
Сторінка 23
If the steam throttle should now be opened , this engine could not move of its own
volition , for two reasons : the valve being centred , all ports are covered and no
steam would be admitted to the cylinder ; working singly , the engine would have
...
If the steam throttle should now be opened , this engine could not move of its own
volition , for two reasons : the valve being centred , all ports are covered and no
steam would be admitted to the cylinder ; working singly , the engine would have
...
Сторінка 24
... the other reason for the engine not starting promptly , even when assistance
should be given by pinching the wheel , is that the valve has no lead ; the edge of
the valve and edge of the admission port are not even close to lineand - line , and
...
... the other reason for the engine not starting promptly , even when assistance
should be given by pinching the wheel , is that the valve has no lead ; the edge of
the valve and edge of the admission port are not even close to lineand - line , and
...
Сторінка 28
The engine is of direct valve motion when the reverse lever is in the goahead
position , and of indirect motion when the lever in the back - up notch , the
reasons for this becoming apparent as the method for reversing the gear is
understood .
The engine is of direct valve motion when the reverse lever is in the goahead
position , and of indirect motion when the lever in the back - up notch , the
reasons for this becoming apparent as the method for reversing the gear is
understood .
Сторінка 35
the radius of the link , and because the link does not change its position in
relation to the axle , the curve need not be as it was , and we have reasons for
curving it in the opposite direction - reasons soon to be shown . First , we will
hitch - up ...
the radius of the link , and because the link does not change its position in
relation to the axle , the curve need not be as it was , and we have reasons for
curving it in the opposite direction - reasons soon to be shown . First , we will
hitch - up ...
Сторінка 46
these pins and pin holes from wear is but slowly effected if kept well lubricated ,
and is one reason why lost motion is so slow to develop in the Walschaert valve
gear . Just above the pin hole 4a there is an oil well finished in the top of the link
...
these pins and pin holes from wear is but slowly effected if kept well lubricated ,
and is one reason why lost motion is so slow to develop in the Walschaert valve
gear . Just above the pin hole 4a there is an oil well finished in the top of the link
...
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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