. Locomotive engineering : a practical journal of railway motive power and rolling stock . passed the station and the instruuRUi hasbeen restored to its normal position. Onreleasing the plunger, the sliding block B 206 accomplished being shown in section, isshown in Fig. 5. To explain how the locking circuit isbroken and restored through the combinedaction of the plunger, the interlocking re-lay and the track circuit, reference must behad to Fig. 6, in which all the partsmade use of in this operation are relay and track circuit shown are thosebelonging to station B at the end of theb
. Locomotive engineering : a practical journal of railway motive power and rolling stock . passed the station and the instruuRUi hasbeen restored to its normal position. Onreleasing the plunger, the sliding block B 206 accomplished being shown in section, isshown in Fig. 5. To explain how the locking circuit isbroken and restored through the combinedaction of the plunger, the interlocking re-lay and the track circuit, reference must behad to Fig. 6, in which all the partsmade use of in this operation are relay and track circuit shown are thosebelonging to station B at the end of theblock, the releasing magnet being the onebelonging to the instrument of station Aat the entrance of the block. Separateviews of the contact points D and /T areshown to make it easier to follow the action that takes place when the plunger ispressed in and the crossbar A raised. The construction of the bar A is suchthat the contact at D is made on the upstroke and that at E is made on the downstroke, the projecting point that engageswith the spring E being arranged to turn. on the bar as a center and press againstthe spring only on the down stroke of thebar. The relay points being shown in thenormal position, it is seen that the lowermagnet is energized bj- the current whichpasses through the two rails forming partof the track circuit, and the armature isheld up. The circuit of the upper magnetbeing broken at E, its armature is downand makes a contact at O. When the plunger is pressed in and thecrossbar raised, a contact is made betweenthe points at D, completing the electriccircuit through the main battery, the mag-net M and the points O and P, energizingthe releasing magnet JM, and unlockingthe signal lever at station A. On thecrossbar X being forced down by the actionof the spring S (Fig. 4), contact is made,as already explained, at the point E, mo-mentarily completing the circuit, energiz-ing the upper magnet, and thereby raisingthe armature and breaking the releasingcircuit a
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroa, bookyear1892
