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 22
block is moved it will cause the valve to travel in an opposite direction , on
account of the rocker - armsnot shown — the engine would run forward . As the
wheel revolved to the right eccentric B would follow in the same direction and
one ...
block is moved it will cause the valve to travel in an opposite direction , on
account of the rocker - armsnot shown — the engine would run forward . As the
wheel revolved to the right eccentric B would follow in the same direction and
one ...
Сторінка 24
push the valve forward — the direction in which the piston will have to travel : and
to accomplish this , the position of the eccentric must be changed to a point on
the wheel exactly its opposite in location - 90 degrees on the other side of the ...
push the valve forward — the direction in which the piston will have to travel : and
to accomplish this , the position of the eccentric must be changed to a point on
the wheel exactly its opposite in location - 90 degrees on the other side of the ...
Сторінка 25
... stroke -- while the main - pin is on the deadcentre , and the engine standing as
in Fig . 2 , with the exception , only , that we have given it lead . Lead is not
expected to help move an engine past the dead centre ; it has somewhat the
opposite ...
... stroke -- while the main - pin is on the deadcentre , and the engine standing as
in Fig . 2 , with the exception , only , that we have given it lead . Lead is not
expected to help move an engine past the dead centre ; it has somewhat the
opposite ...
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Simple Form of Steam Engine with Indirect Valve Motion . tween the eccentric
and valve , so that as the eccentric moves in one direction the valve travels in the
opposite one ; to make the engine still run forward the position of the eccentric is
...
Simple Form of Steam Engine with Indirect Valve Motion . tween the eccentric
and valve , so that as the eccentric moves in one direction the valve travels in the
opposite one ; to make the engine still run forward the position of the eccentric is
...
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 ...
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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