(6.) Window arrangement, permitting circulation without
draughts.
(7.) Emergency brake valve on truck operated by track trip.
(8.) Emergency brake valve in connection with
master-controller.
The table on page 133 shows the main dimensions of the car, and
also the corresponding dimensions of the standard car in use on the
Manhattan Elevated Railway.
The general arrangement of the floor framing is well shown in the
photograph on page 132. The side sills are of 6-inch channels,
which are reinforced inside and out by white oak timbers. The center
sills are 5-inch I-beams, faced on both sides with Southern pine. The
end sills are also of steel shapes, securely attached to the side
sills by steel castings and forgings. The car body end-sill channel is
faced with a white-oak filler, mortised to receive the car body
end-posts and braced at each end by gusset plates. The body bolster is
made up of two rolled steel plates bolted together at their ends and
supported by a steel draw casting, the ends of which form a support
for the center sills. The cross-bridging and needle-beams of 5-inch
I-beams are unusually substantial. The flooring inside the car is
double and of maple, with asbestos fire-felt between the layers, and
is protected below by steel plates and "transite" (asbestos board).
The side framing of the car is of white ash, doubly braced and heavily
trussed. There are seven composite wrought-iron carlines forged in
shape for the roof, each sandwiched between two white ash carlines,
and with white ash intermediate carlines.
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