pa1778data.pdf
pa1778data.pdf
pa1778data.pdf
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U.S. STEEL DUQUESNE WORKS<br />
HAER No. PA-115<br />
(Page 138)<br />
supported by fink trusses. The building has a corrugated metal<br />
exterior.<br />
Original Construction Date: 1921.<br />
17*-3" Extension Construction Date: 1953.<br />
2. Main Control Panel: Located in the northeast corner of<br />
the building is a Westinghouse control panel. It contains<br />
switches for the two skip incline motors and the two stock line<br />
test motors.<br />
Installation Date: 1921.<br />
3. Skip Incline Motor, Drive and Winch Drum Assembly:<br />
Mounted on the floor in the middle of the hoist house building<br />
and laid out in parallel on a north-south axis are two 200 hp<br />
Westinghouse Type S.K. D.C. motors operating at 450 rpm.<br />
Connected to each motor on its southern end by a crankshaft is a<br />
Lidgerwood gear drive. Both gear drives are connected to a<br />
larger Lidgerwood gear drive by a crank shaft just south of them.<br />
The large gear drive is connected to a 6'-0" diameter winch drum<br />
which is wrapped with two 1 1/4" diameter wire hoist ropes<br />
leading to the skip car and a 6'-0" diameter sheave wheel at the<br />
top of the furnace, and one 1 1/4" diameter wire counterbalance<br />
rope. Located on the western side of the motor, drive, and winch<br />
drum assembly and attached to the crankshaft between the<br />
Lidgerwood gear drives is a Koppers limit system composed of a<br />
top and bottom travel limit switch for the skip car. Attached to<br />
the center of the southern face of the winch drum is a Logan<br />
Hoist Controller used for controlling the speed of the skip car<br />
as it ascends and descends the hoist track.<br />
Installation Date: 1921.<br />
4. Stockline Test Motor and Winch Drum Assembly: Located on<br />
an approximately 4'-0" wide x 20'-0" long x 10'-0" high balcony<br />
that extends along the eastern wall of the hoist house building<br />
are two stockline motor and winch drum assemblies. Laid out<br />
linearly on a north-south axis, each interconnected assembly<br />
consists of a 2 hp, 1200 rpm Reliance D.C. motor, a Jones-<br />
Herringbone Speed Reducer, and a l'-o M diameter winch drum<br />
wrapped with a 1/4" diameter steel cable. The cable from each of<br />
the assemblies leads to the stockline test rods located at the<br />
furnace top.<br />
Installation Date: 1936.<br />
5. Service Crane: The service crane is suspended from a<br />
monorail located 15'-7 1/2" from the hoist house floor, and runs<br />
along the centerline between the two skip incline motors. The<br />
10-ton crane consists of a winch drum wrapped with a small steel<br />
cable equipped with a "C" hook.<br />
Installation Date: 1921.