The Minneapolis journal. [volume] (Minneapolis, Minn.) 1888-1939, 1904-08-13

dock covering 500 by 1920 feet. This
dock has a storage capacitysfo about
100000 tons Of coal and lin estope.
Along its entire inner, face is a series
of pockets, surmounted by a belt-line
cable railway for loading coal out for
the general market. The company is
shipping about forty cars per day for
the railroad trade r., 81 .-k>- III
The face of the dock is fitted with
three sets of Mead hoists for unload
ing vessels. This is an automatic sys-
tenn of the latest type, in which no
shOvelerS are necessary in the hold OF
the ship, and scarcely any men above.
An engineer, a tripman and one or two
others are able to handle: each hoist,
and it is, moreover, an exceedingly
fast plant. Connected with this sys-:
tenn is a belt cable railway covering
the entire periphery of the dock at.
an elevation Of forty feet. A travel
ing truss steel bridge, 500 feet longs
at the same elevation, also covers the
entire dock. Cars. on this galloway
are arranged to trip and unload .au-
tomatically anywhere desired, and at
any points where the bridge may be
halted switches connect it with the
cable tracks. On this bridge is the
coal pickup, bucket for moving coal
where desired.
Production of Coke.
On the inner face of the. dock and
beneath the galloway is a Williams
crusher, for reducing to proper size
for the ovens all coal destined for cox
ing. From this crusher link belt
bucket conveyors rises to the top of a
1,200-ton bunker above the end of the
coking battery and to a height of
eighty feet. Coal to be cooked passes
the crusher, is broken to the size Of
| a grain of corn, and is raised and
L int ha Ia h11r F'rGt
| this it is fed thru doors in the bottom
into an automatic scale larry Of size
| sufficient to contain an oven charge
Of eight tons. This larry feeds into
the ovens thru six discharge pipes and
distributes the coal fairly evenly the
eral practice and a distinct improve
ment thereon, this larry traverses the
| top Of the battery not on the brick
work, but suspended from an over
head bridge, a steel truss 200 feet long
extending the full length Of battery
and bunker. In this way all strain
of the heavy larry trundling. back and
forth over the battery is avoided.
The ovens, each seventeen inches
| in width, thirty-three feet in length
across the battery, and with a height
of seven feet available for filing with
coal, will carry a charge of eight tons
! each. There are fifty of them. The
probable duration of fire is twenty
four hours, giving daily charge ao1
| about 400 tons Of coal and a daily
output of $50 tons of coke. These
ovens, with combustion chambers sur.
rounding them, their regenerative
chambers below, their gas and liquid
1 mains, etc, require a concrete and
| masonry structure about thirty-sis
feet by 200 feet and forty feet high
i Above is the bridge for the chareine
larry and at one end the large bunker
for receiving crushed coal for charg.
ing.
Income From By-products. {.
| By-products pass out Of the ovens
/ and into a brick and steel gashouse
/ where the separation from tar anc
ammonia is carried on. BY the USE
i Of a new screen system in the coolers
gas is freed from tar before it reaches
the usual tar extractors and decided
4 liquor pass off, while the rich. gas i
i sold to the cities of Duluth and Su
4 perior for domestic purposes. "A con
4 tract was made with the light ant
4 water department of Duluth and tn,
s private company that supplies Su
4 perior to feed their mains at a, small
i decrease from their retail prices. II
Duluth these prices vary from Is t,
90 cents per thousand feet, while a
Superior they are higher. Daily con
8 sumption during summer months il
81 Duluth, when demand is at It's mini
g mum, is about 225,O00 feet a day an,
in Superior about half as much. Il
7 order to increase the use Of by-produc
gas for heating purposes the Zenit]
company has arranged to heat build