pa1778data.pdf

B. Hoist House,:
U.S. STEEL DUQUESNE WORKS
HAER No. PA-115
(Page 132)
1. Hoist House Building: The hoist house building is 25*-9"
wide x 42 , -4" long x 18'-0" high (from the floor to the underside
of the truss), and is mounted on a platform supported by steel
columns which extend 40'-0" above the trestle. It is located
approximately 15'-0" west of the centerline of blast furnace
number 1. The building is supported by steel columns at its
north and south end. The columns are welded to steel plates
which are bolted to the concrete floor. At the north and south
end of the building are Fink roof trusses. The gabled roof
building has a corrugated metal exterior.
Construction Date: 1924.
2. Motor-Generator Set: Located in the northwest corner of
the hoist house building is a 3 phase, 25 cycle Westinghouse
induction motor with rated specs of 350 hp, 440 volts, 735 rpm at
full load, and 394 amps per terminal. It is connected on its
north end to a 24 0 kw Westinghouse D.C. generator with specs of
600 volts, 400 amps and 735 rpm.
Installation Date: 1924.
3. Main Circuit Board: In the northeast corner of the hoist
house building is a Westinghouse circuit board labeled 440 volts,
AC-25. It contains switches for the generator, the two skip
incline motors, and the two stock line test motors. Located on
top of the circuit board are four electrical resisters.
Installation Date: 1924.
4. Hoist Bucket Incline Motor, Drive, and Winch Drum
Assembly: In the middle of the hoist house building are two
parallel General Electric D.C. motors running in a north-south
direction. The specs for each are 140 hp, 230 volts, 515 amps,
and 400 rpm. Both motors are connected to a Lidgerwood gear
drive on their southern end. Both gear drives are attached to a
larger Lidgerwood gear drive located just south of them. The
large gear drive is connected to a 6'-0" diameter winch drum
which is wrapped with two 1 1/4" diameter hemp ropes leading to
the hoist carriage and a 6*-0" diameter sheave wheel at the top
of the furnace, and two 1 1/4" diameter counterbalance hemp
ropes. Each rope travels about 186*-0". Attached to the large
gear drive west of the motors is a Koppers governor system. On
the north end of the system is a bottom limit switch for the
hoist bucket, on the south end is the hoist bucket top limit
switch.
Installation Date: 1924.
5. Stockline Test Rod Motor and Winch Drum Assembly:
Located on an approximately 4'-0" wide x 20'-0" long x 10'-0"