The Lever Lock Circuit

Railway Point Lever Lock Circuit & The Indication Circuit

Railway Point Lever Lock Circuit, The Indication Circuit, Old style circuit  Railway Point Lever Lock Circuit & The Indication Circuit Lever Lock Circuit  Every set of points which has a passenger move over them, must be track locked as discussed in 9.17. Another way of achieving this is to prevent the controlling point lever from moving. In many […]

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Railway Point Circuit

Railway Point Circuit Introduction, To re-cap, The Controlling Lever, The Point Control circuit, The Detection circuit, The WL Control circuit, The Lever Lock circuit, The Indication circuit,Point Detection,The P&LD Box,The Three Position WKR Railway Point Circuit Railway Point Circuit Introduction  The majority of points used on London Underground are pneumatically operated, the most common types being Four Foots, Chair locks […]

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