Statements (13)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
railway signalling equipment
|
| gptkbp:countryOfOrigin |
gptkb:United_Kingdom
|
| gptkbp:function |
mechanical interlocking
|
| gptkbp:historicalPeriod |
19th century
|
| https://www.w3.org/2000/01/rdf-schema#label |
S and A lever frame
|
| gptkbp:manufacturer |
gptkb:Saxby_&_Farmer
|
| gptkbp:mechanismOfAction |
lever frame
|
| gptkbp:operatedBy |
signalman
|
| gptkbp:usedFor |
controlling railway points
controlling railway signals |
| gptkbp:usedIn |
railway signal boxes
|
| gptkbp:bfsParent |
gptkb:S_and_A_(Spoor_and_Anderson)
|
| gptkbp:bfsLayer |
6
|