The Wheeling daily intelligencer. [volume] (Wheeling, W. Va.) 1865-1903, 1886-09-14

tween the foundation walls Is filled witt
refractory tubes-We are now speaking o.
the simplest type We have seen, though
several exist. These tubes extend length
wise Of the furnace and are arranged with
spaces around them, through which the
air circulates and becomes highly heated
the interior Of tue tubea being the passage
way through which tho waste heat and
gases reach tho chimney. 3,
The upper portion OF tho turnance IL
changed, 60 that what was formerly the
position oithegrateis nowoccupiod by the
fiue. The waste heat passing over the tiue
bridge turns downward and enters the
tubes in tho bottom, and returns through
them to the stack, the flames making q
complete circuit from its entrance to itF
exit from the furnace. The gas Is admitted
through number Of small pipes in the
baCk-walls about on q level with tho top oil
the fire bridge, the heated air rising direct
~ under it through luo extending the
width OF the furnace, between the bridge
and the baCk.wall, and mingllng with the
tho gas Es they both flow over the bridge
into the working chamber.
A MERE BREATH OF 1T sUFTICEs,
From 9 10 81 ounces pressure Of gas is
ample In this furnace for heating IA net
tons OF iron in ten hourB, the waste OF iron
mostly old rail piles wOrked-beiug re-
duCsd from 8 perCsnt-its former average
to 8 percent. This furnace hns run eigh.
teen months without 60 much as new
bridge, and the regenerators have never
been touched, though now in constant use
for two years.
In essaying the uso Of natural gas in the
reversing type OfreGenerative furnace, the
usual course OF pre.heating both gas and
air was followed, resulting in flilure, from
carbon deposits completely choking the
gas generators, and 1t was also found that
the ordinary air regenerator was incapable
OF supplying sufficient air for the perfect
combustion OF natural gs3
The method Of working was then chang.
ed; both gas aud air regenerstora were
used for supplying air, and tho gas was
introduced cold Just on level with the
ports, through several small pipel In tho
end wall OF the furnace, the heated air
coming up underneath it.
This mode OF using the gas In siemens
furnaces Is entirely UncCes3iul, any degree
OF heat required being readily, had with q
very low pressure Of gas.
A furnace Of this typo, specially design.
ed for using natural gas, 10 nov erected at
q cost little above, that Of the ordinary
reverberAtory furnace Of tho same ca.
paCty. 1t contains but q single pair oil
regenerRtors, and these are above ground,
one at each end Of the furnace; no arches
over them except the roof itself; no ports
Just q straight bridge wall; no gas pro.
ducers, and no extensive 1lues, the gas
entering cold az the end wall Just above
the chpCker.work. This furnace does Its
work quickly with very light pressure Of
gas, remarkably ANAL waste Of iron, and
II properly cared for ia everlasting, as
compared to the ordinary dlreCt.working
furnace.
ron Pudding.
In pudding with natural gas, because Of
tho mild nature OF the flame II generally
takes longer to molt the pig aud get 1t
ready for the clnder, but this is more than
regained dining the remainder Of tho
working by the extreme regularity OF the
heat as compared to that from coal.
Tho pudder has no difficulty in secur.
ing reducing or an oxydizing fame at
viii, simply by manipulating Tho damper
ms heretofore; crit may be accomplished
by reducing or increasing tho supply OF
Rfr; the temperature Of the furnace is also
as readily controlled.
From the nature Of the working and the
various phases which iron assumes In
pudding, 1t Is more readyto absorb any
impurities that may exist in the fuel.
This 10 particularly the case when the
heat 10 dropping" and when it Is being
turned preparatory to balling; It's thor.
ough and uniform exposure to tho action
Of the flame at this period OF the working
Is essential to good work.
The iron Is then in q finely divided
granular atate. and AZ the working pro.