Statements (49)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
valve gear
|
| gptkbp:adoptedWorldwide |
true
|
| gptkbp:advantage |
external mounting for easier maintenance
precise steam control suitable for large locomotives |
| gptkbp:alternativeName |
Walschaert valve gear
|
| gptkbp:commonIn |
20th century steam locomotives
|
| gptkbp:component |
valve spindle
eccentric rod combination lever expansion link radius rod return crank union link |
| gptkbp:countryOfOrigin |
gptkb:Belgium
|
| gptkbp:cutoffControl |
variable by position of radius rod
|
| gptkbp:externalOrInternal |
external
|
| gptkbp:function |
controls steam distribution to locomotive cylinders
|
| https://www.w3.org/2000/01/rdf-schema#label |
Walschaerts valve gear
|
| gptkbp:influenced |
Baker valve gear
Caprotti valve gear Southern valve gear Young valve gear |
| gptkbp:introducedIn |
1844
Belgian State Railways locomotives |
| gptkbp:inventedBy |
Egide Walschaerts
|
| gptkbp:maintenance |
relatively easy
|
| gptkbp:mechanismOfAction |
external valve gear
|
| gptkbp:notableFeature |
allows reversing and variable cutoff
|
| gptkbp:notableUser |
gptkb:Deutsche_Reichsbahn
gptkb:Soviet_Railways gptkb:Union_Pacific_Railroad gptkb:British_Railways gptkb:Indian_Railways gptkb:Japanese_National_Railways |
| gptkbp:patent |
1844
|
| gptkbp:reliability |
high
|
| gptkbp:replacedBy |
gptkb:Stephenson_valve_gear
|
| gptkbp:reversingMethod |
shifting radius rod in expansion link
|
| gptkbp:usedFor |
piston valves
slide valves |
| gptkbp:usedIn |
gptkb:steam_locomotive
|
| gptkbp:usedOn |
steam locomotives in Africa
steam locomotives in Asia steam locomotives in Australia steam locomotives in Europe steam locomotives in North America |
| gptkbp:bfsParent |
gptkb:Hackworth_valve_gear
|
| gptkbp:bfsLayer |
8
|