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 17
Lap is the distance by which the valve overcovers the steam admission port —
the distance the valve must be moved from an exact central position on its seat
before the port begins to open to admit steam to the cylinder . Lead is the
distance ...
Lap is the distance by which the valve overcovers the steam admission port —
the distance the valve must be moved from an exact central position on its seat
before the port begins to open to admit steam to the cylinder . Lead is the
distance ...
Сторінка 24
... 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 assisted rotation of
the wheel would have to push the valve a distance equal to the amount of outside
...
... 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 assisted rotation of
the wheel would have to push the valve a distance equal to the amount of outside
...
Сторінка 25
... this kind of an eccentric the advance necessary to secure lead , or overcome
the outside lap , with outside admission valves we must lengthen the return crank
slightly , but still keeping eccentric pin E the same distance from the hub centre .
... this kind of an eccentric the advance necessary to secure lead , or overcome
the outside lap , with outside admission valves we must lengthen the return crank
slightly , but still keeping eccentric pin E the same distance from the hub centre .
Сторінка 26
valve , because the advance of the valve must be exactly the distance of lap plus
lead . In Fig . 4 we have taken the engine illustrated in Fig . 2 , and interposed the
double rocker - arms be0 O Indirect Valve Motion Engine Runs Forward Fig . 4 .
valve , because the advance of the valve must be exactly the distance of lap plus
lead . In Fig . 4 we have taken the engine illustrated in Fig . 2 , and interposed the
double rocker - arms be0 O Indirect Valve Motion Engine Runs Forward Fig . 4 .
Сторінка 28
... and while the combination lever remains at right angles to the valve - stem , the
distance from eccentric to valve is not changed and its attachment has had no
effect on the valve , which is central on its seat with both admission ports covered
...
... and while the combination lever remains at right angles to the valve - stem , the
distance from eccentric to valve is not changed and its attachment has had no
effect on the valve , which is central on its seat with both admission ports covered
...
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Загальні терміни та фрази
action admission port admission valves advance American amount angle axle block broken carried cause centre cents combination lever complete compression connection construction correct cover crank crosshead cut-off cylinder dead described desired diagrams direction disconnected distance drawings driving eccentric rod edition effect engine equal exactly exhaust explained forward frame front fulcrum fully give given illustrated inches inside admission latter lead length link motion link-block locomotive lower end main rod main-pin manner mechanism method moved movement necessary notch obtained opening operation opposite piston placed position practical Price quarter question radius rod reference represents reverse lever secure short shortened showing shown side steam Stephenson link stroke tion troubles turning upper valve motion valve-stem vertical Walschaert gear Walschaert valve gear weight wheel
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Бібліографічна інформація
| Назва | 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 ... |
| Автор | William Wallace Wood |
| Видання | 3 |
| Видавець | Norman W. Henley Publishing Company, 1912 |
| Оригінал із | Мічиганський університет |
| Оцифровано | 27 вер. 2007 |
| Обсяг | 245 стор. |
| Експортувати бібліографічний опис | BiBTeX EndNote RefMan |