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 16
... but must be gotten acquainted with before starting into the subject of the
mechanism that operates it ; for , if the reader does not understand somewhat of
the construction and functions of the valve , this is a step ahead of him — but a
step that ...
... but must be gotten acquainted with before starting into the subject of the
mechanism that operates it ; for , if the reader does not understand somewhat of
the construction and functions of the valve , this is a step ahead of him — but a
step that ...
Сторінка 20
... to the cylinder must be one - fourth of the cycle of motion ahead of the piston .
Therefore , if the connection from eccentric to valve is through a direct line 20
THE WALSCHAERT VALVE GEAR.
... to the cylinder must be one - fourth of the cycle of motion ahead of the piston .
Therefore , if the connection from eccentric to valve is through a direct line 20
THE WALSCHAERT VALVE GEAR.
Сторінка 21
2 , the eccentric must be located at E , one - fourth of the wheel ' s circle , or 90
degrees , ahead of the crank - pin - assuming the engine to be running forward to
the right . But before going further it is best to explain how to take the expression
...
2 , the eccentric must be located at E , one - fourth of the wheel ' s circle , or 90
degrees , ahead of the crank - pin - assuming the engine to be running forward to
the right . But before going further it is best to explain how to take the expression
...
Сторінка 22
2 , the eccentric is alwayswith the same kind of valve - a “ quarter ahead of the
pin . " Referring again to Fig . 3 , if the link EE was raised , eccentric C would
control the motion of the link - block A , and , through a reverse action of the
rocker ...
2 , the eccentric is alwayswith the same kind of valve - a “ quarter ahead of the
pin . " Referring again to Fig . 3 , if the link EE was raised , eccentric C would
control the motion of the link - block A , and , through a reverse action of the
rocker ...
Сторінка 24
... 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
main - pin — a quarterturn ahead of the crank with the wheel turning backward .
... 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
main - pin — a quarterturn ahead of the crank with the wheel turning backward .
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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