pa1778data.pdf

U.S. STEEL DUQUESNE WORKS
HAER No. PA-115
(Page 13 6)
2. Ore, Manganesef and Flux Scale Car: The construction,
manufacture, relative location, and function of the ore,
manganese, and flux scale car for blast furnace number 3 are
exactly the same as its counterpart for blast furnace number 2.
Installation Date: 1920.
3. Ore, Manganese, and Flux Bins: See I - A - 3 for
description.
Construction Date: 1920.
4. Coke Bin: The construction, relative location, and
arrangement of the coke bin for blast furnace number 3 is the
same as the coke bins for blast furnaces number 1 and 2 with the
exception that the vibrating coke screens are made by a different
manufacturer. The 60" wide x 120" long x 4" thick coke screen,
which is inclined at angle of 20 degrees from the mouth of the
weigh hopper openings, was manufactured by the Syntron Company.
A 2 hp motor powers the vibrating coke screen.
Construction Date: 192 0.
Alteration of bin to fit Syntron Vibrating Coke Screen:
1969.
5. Skip Pit: Made up of concrete construction, the skip pit
is 8'-l" wide x 14'-6" long x 20'-2 1/2" deep. Its centerline is
located 40'-0" off of the eastern wall of the stockhouse and
259'-0" from the centerline of the hoist bucket pit for blast
furnace number 2.
Construction Date: 1953.
6. Skip Incline and Track: The skip track consists of a set
of rails 5 f -8 1/2" apart which are mounted to a 9'-10 5/8" wide x
9'-0" high inclined bridge rising for a distance of 164'-9" to
the top of the furnace along its centerline. The incline of the
bridge is broken up into two segments. It rises at an angle of
approximately 70 degrees to a height of 128'-3" where it becomes
an approximate 58 degree angle to the top of the furnace.
Design Date: 1952.
7. Skip Car and Carriage: A skip car (capacity level full =
267 cu. ft.) is mounted on a carriage which is set on the skip
track leading to the top of the furnace. The steel plate
constructed car is 5'-2" wide x ll'-7 1/2" long x 5'-4 1/2" high.
Its carriage is made up of a front and rear rail wheel and axle
assembly. The centerline distance between the front and rear
wheels is 7'-0". The distance between rails is 5'-8 1/2". The
stem of the skip car is mounted on a trunnion, located 3 , -3" from
the rear of the car, and is connected to a 1 1/4" wire rope which
is attached to the motor, drive, and winch drum assembly situated
in the hoist house. The inside of the skip car, which is open at