The sun. [volume] (New York [N.Y.]) 1833-1916, 1904-10-23
W1EC0eAT1ON Ar COLUMBIA UNIVERSITY STATION ~

feature OF construction comes In. Six huge
chimneys fifteen feet In diameter on the
inside at the top and twenty-five feet wide
at the base carry off the smoke from the
furnaces. Each serves twelve boilers and
each Is 22s feet high.
To save space In the power house these
are all supported on the steel framework
Of the building, seventy-six feet above
the basement floor and sixty-three feet
above the fire CRATES. Six steel columns
carry the platform on which each chimney
rests.
Coal Is unloaded from the barges at the
pier by a movable electric hosting tower
and carried to the power house by q system
OF belt conveyers. The tower sits the GOAL,
brushes the large pieces, weighs the WHOLE
and the belts convey 1t onward and dis
tribute it evenly In the bunkers at the
power house.
Steel cars, each OF two tons capacity, re-
ceive the ashes as they are drawn out OF
the furnaces, carry them to the pier, ana
automatically deliver them to another belt
which In turn deposits them in 1000 ton
steel storage bunker Thence, IN turn
when barges are to be filled, collecting
b slt under the bunker pocket gathers them
in, delivers them to a loading belt conveyor,
folded when not in use, inside the wharf
line, and that dumps them into the barges.
The belts are kept clean automatically by
rotary brushes and the whole outfit Is driven
by the electricity made in the power house.
Every device known to mechanical en-
cheering and proved by experience to be
worth while has been adopted In this new
| mower house. The chinneys are fitted
| with the newest economizers and smoke
consumers.
The machinery Ia all Of the newest design.
Every casting ia OF the semi-steel variety
known as air furnace iron, which Is tougher
than ordinary iron. Every. pipe is OF
wrought iron ard every fiange is Of wrought
steel specially rolled by the krupps at
| Essen, Germany
The power to run the subway trains is
generated 10 this big power house IN wha'
| ing current at II 900 volts. This current is
carried through hree-conductor cables to
eight sub stations at various points along
the line and there transformed and con-
verified into a direct current OF rs volta
has been made for the installation OF foul
more Of these feeder -substations as soor
as the business of the road requires them
Express trains in the rush hours In thu
subway will consist Of eight cars. OF which
| the nrSt, tnlIu, illtil, rihpii eho oAShs'
i.e motor cars and the rest trail cars tn,
idea in this Ia that an eight car train car
he reduced to SIX car train or thret
car train in times Of normal or light trnve
simply by dropping of q few cara iron
tbe end In the wards, and o motor car vii
still be left at the head and the end Of tn
reduced train. The normal local tran
will consist OF Ave cars, with the first, thirt
and fifth motor cars
Local trains are to run at an averag'
speed OF fifteen miles an hour betwee,
City Hall and Ninety-dKth street, Nortl
Of City Hall, on both the East and Wes
Side branches. their speed viii be increase'
are to lie operated for whilo at not NOR
than twenty-five miles an hour, but highe
speeds up to thirty miles an hour can b
obtained by simply increasing the numoe
Of motor cars.
OF course the peculiar conditions, o
New York travel call for larger trains
more OF them and heavisr loads In the riA