. Railway Times . .xles travel sink to a lower level than tiiatof the others, so that although the rails are inclined, thetrucks and boardr. are horizontal, but displaced verticallyso as to form steps. The is thus carried up on ahorizontal step until the toji is reached, when the stepsdrop into one level forming a plain platform as escalator runs continuously, and is said to have acapacity equal to that of three lifts. It is aho much moreeqonomical to run, especially for a short rise, as the heavystarting currents required for a lift are avoided. Thetwo escalators run in o
. Railway Times . .xles travel sink to a lower level than tiiatof the others, so that although the rails are inclined, thetrucks and boardr. are horizontal, but displaced verticallyso as to form steps. The is thus carried up on ahorizontal step until the toji is reached, when the stepsdrop into one level forming a plain platform as escalator runs continuously, and is said to have acapacity equal to that of three lifts. It is aho much moreeqonomical to run, especially for a short rise, as the heavystarting currents required for a lift are avoided. Thetwo escalators run in opposite directions, for the incomingand outgoing passengers respectively. There is also 9ft. tui? at Liveqvtcil Street, which will contam anordinary stairway, but which may later contain a thirdescalator. Each escalator will be driven by a 30 motor. The constructional work at tlie surface under the per-manent way and platforms at Livei-pool Street is of 58 THE RAILWAY TIMES. [January 20, January 20, 1912.] rili: TIMES. 59 exceptional interest. Subways and l:oi>king lialls havebeen excavatctl here witiuiut interfering witli the working(tl the Great Eastern trallic in tlie sliglilest. Heavy 1 rii kwalls, such as the main outer walls of the Great Ea ternmain Ixioking hall, had to lie uiider])inned, sewers, gas and\\ater mains di\erted, and other •. i)ecial work carried outunder the most dillicult and trying conditions. Theexisting foundatitins of one of the heavic: t walls wereunderpinned to a depth of and at some points, whereit was necessary for a subway to cross it, had to he sup-ported on very heavj steel girders. The increase of traffic on the Central London Railwayconsequent upon this important and convenient exteri;i(;nwill be very considerable, and this, aided by the progressivepolicy adopted by Dr. H. F. Parshall, the new Chairmanof the Central London Railway, and the consultingengineer for the original electrical installatio
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