pa1778data.pdf

U.S. STEEL DUQUESNE WORKS
HAER No. PA-115
(Page 130)
screen provides the power for vibration. Associated with the
screen is a mechanical gate outfitted with a weight on each side
of it. The gate was used to restrain the coke when it was not
being charged into the hoist bucket.
Construction Date: 1924.
5. Hoist Bucket Pit: Located 120*-0" from the north wall of
the stockhouse and Sl'-e" from the east wall, the concrete hoist
bucket pit is 13"-0" wide x 26'-4 1/2"" long x 18•-2 1/2" deep.
Construction Date: 1924.
6. Motor and Turntable for Hoist Bucket: Located in the
center and on the floor of the hoist bucket pit is a 5'-10"
diameter x 2'-9/16" thick bell shaped turntable attached by two
nearly perpendicular line shafts to a 15 hp W. C. & Manufacturing
Company motor operating at 600 rpm. The motor is located in a
5'-0" wide x 6'-3" long x 4'-0" deep enclave in the center of the
western wall of the hoist bucket pit.
Construction Date: 1924.
7. Hoist Track and Carriage: The carriage is an 11 1/2"
thick steel plate mounted on steel rail wheels. The centerline
distance between the front and back wheels is 9'-0 M , the distance
across the centerline of the wheels is 8 f -8 1/8". Hanging from
the centerline of the front axle is the stem of the hoist bucket.
The hoist track consists of a set of rails, 8'-l 1/8" apart,
mounted to a 167'-0" high inclined bridge leading to the top of
the furnace along its centerline. The incline of the truss is
broken into two segments. It rises at an angle of 70 degrees to
a height of 133'-0 M where it becomes a 58 degree angle to the
furnace top.
Design date: 1924.
8. Hoist Bucket: There is one hoist bucket (capacity level
full a= 250 cu. ft.) mounted on the carriage which is set on the
hoist track leading to the top of the furnace. The bucket is 6'-
10" in diameter x 8'-6 7/8" high. The bottom 3*-2 3/8" of the
bucket is beveled at an angle of 24 degrees. Inside of the
bucket is a spider mounted on its inside wall. The spider helps
desegregate the coarse and fine particles in the charge while the
bucket revolves on the turntable. The bottom of the bucket is
made up of a 4'-l" diameter movable bell attached to the stem of
the carriage.
Design Date: 1924.
Construction Date: 19 68.
9. Coke Breeze Feeder Conveyor: 20" conveyor belts
(capacity = 110 feet per minute), manufactured by The C. O.
Barlett and Snow Company of Cleveland, Ohio, run from the