pa1778data.pdf
pa1778data.pdf
pa1778data.pdf
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B. Hoist House,:<br />
U.S. STEEL DUQUESNE WORKS<br />
HAER No. PA-115<br />
(Page 132)<br />
1. Hoist House Building: The hoist house building is 25*-9"<br />
wide x 42 , -4" long x 18'-0" high (from the floor to the underside<br />
of the truss), and is mounted on a platform supported by steel<br />
columns which extend 40'-0" above the trestle. It is located<br />
approximately 15'-0" west of the centerline of blast furnace<br />
number 1. The building is supported by steel columns at its<br />
north and south end. The columns are welded to steel plates<br />
which are bolted to the concrete floor. At the north and south<br />
end of the building are Fink roof trusses. The gabled roof<br />
building has a corrugated metal exterior.<br />
Construction Date: 1924.<br />
2. Motor-Generator Set: Located in the northwest corner of<br />
the hoist house building is a 3 phase, 25 cycle Westinghouse<br />
induction motor with rated specs of 350 hp, 440 volts, 735 rpm at<br />
full load, and 394 amps per terminal. It is connected on its<br />
north end to a 24 0 kw Westinghouse D.C. generator with specs of<br />
600 volts, 400 amps and 735 rpm.<br />
Installation Date: 1924.<br />
3. Main Circuit Board: In the northeast corner of the hoist<br />
house building is a Westinghouse circuit board labeled 440 volts,<br />
AC-25. It contains switches for the generator, the two skip<br />
incline motors, and the two stock line test motors. Located on<br />
top of the circuit board are four electrical resisters.<br />
Installation Date: 1924.<br />
4. Hoist Bucket Incline Motor, Drive, and Winch Drum<br />
Assembly: In the middle of the hoist house building are two<br />
parallel General Electric D.C. motors running in a north-south<br />
direction. The specs for each are 140 hp, 230 volts, 515 amps,<br />
and 400 rpm. Both motors are connected to a Lidgerwood gear<br />
drive on their southern end. Both gear drives are attached to a<br />
larger Lidgerwood gear drive located just south of them. The<br />
large gear drive is connected to a 6'-0" diameter winch drum<br />
which is wrapped with two 1 1/4" diameter hemp ropes leading to<br />
the hoist carriage and a 6*-0" diameter sheave wheel at the top<br />
of the furnace, and two 1 1/4" diameter counterbalance hemp<br />
ropes. Each rope travels about 186*-0". Attached to the large<br />
gear drive west of the motors is a Koppers governor system. On<br />
the north end of the system is a bottom limit switch for the<br />
hoist bucket, on the south end is the hoist bucket top limit<br />
switch.<br />
Installation Date: 1924.<br />
5. Stockline Test Rod Motor and Winch Drum Assembly:<br />
Located on an approximately 4'-0" wide x 20'-0" long x 10'-0"