pa1778data.pdf
pa1778data.pdf
pa1778data.pdf
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U.S. STEEL DUQUESNE WORKS<br />
HAER NO. PA-115<br />
(Page 116)<br />
Westinghouse D.C. motors running at 1750 rpm. Each motor is<br />
connected to a Philadelphia gear reducer with a ratio of 20.9 to<br />
I. The tripper is ^-O" wide x 32'-4" long x 16' -10 1/8" long<br />
and travels on railroad tracks, spaced 7 f -5" apart, which<br />
straddle conveyor belt number three. It travels a length of<br />
4991-911 and is powered by an electric rail.<br />
Installation Date: 1957.<br />
G. Tripper Number Two: Manufactured by the Link Belt<br />
Company, tripper number two is the same size and performs the<br />
same function as tripper number one. It travels a length of<br />
988'-10 1/2".<br />
Installation Date: 1957.<br />
II. Trestle:<br />
A. Flux and Sinter Fines Track System: Located just east of<br />
an elevated 3 f -0" walkway which separates the car dumper conveyor<br />
belt system from the trestle is the flux (i.e. limestone and<br />
dolomite) and sinter fines track system. The system begins south<br />
of blast furnace number six and consists of two sets of standard<br />
gauge tracks running side by side at blast furnace number six<br />
before merging into a single set of tracks at blast furnace<br />
number four. From there the track runs north past blast furnace<br />
number one. The tracks run directly over the stockhouse flux and<br />
sinter fines bins and have grated openings between each set of<br />
tracks which allow railroad hopper cars to dump their contents<br />
into the bins. The track system is approximately 1800'-0" long.<br />
Construction Date: 1962.<br />
B. Coke Track System: The coke track system is located 5'-11<br />
1/4" above, and approximately 10*-0" east of the flux track<br />
system on a platform supported by steel columns. The system<br />
begins south of blast furnace number six and consists of two sets<br />
of standard gauge tracks running side by side in a northerly<br />
direction past blast furnace number one. The tracks run directly<br />
over the stockhouse coke bins and have grated openings between<br />
the tracks at each coke bin thereby allowing railroad hopper cars<br />
to dump their contents into the bins. The track system is<br />
approximately 1800'-0" long.<br />
Construction Date: 1919-1924.<br />
C. Car Puller Systems: There are five car puller systems<br />
associated with the trestle. The car pullers are used to tow<br />
railroad hopper cars onto one of the trestle track systems in<br />
order to facilitate the stocking of bins.<br />
1. Car Puller Number One: Car puller number one serves the<br />
stockhouse bins associated with blast furnaces number one and