San Antonio daily light. [volume] (San Antonio, Tex.) 1886-1907, 1893-01-07

the distance OF half mile will stand
for Jupiter, q very small appIe at
four-f1fths Of q mile will answer tor
Satvrn, aud cherry on the circum-
terence OF circle q mile and a half
across will represent Uranus.
-
Oxygen. in the Publication of Coal
Gas. .
The main reason for the use of oxy-
gen. says Harrison Viewers. is that
the oxide of iron is revivified In the
BURNERS, without being exposed to
the oxygen OF the atmosphere. with
its consequent expenses of labor in
emptying and filing the boxes, and
turning over the boxes to get q thor
ough reoxidation. But. irrespective Of
tnls, there was q more serious
matter to be considered. Every
time box was opened, there
would be loss of at least !, 900 Gu bic
feet OF gas. and, when replaced, an
equal quantity of sir would eteher be-
Included or have to be expelled by q
similar quantity of gas. In winter, a
purifier frequently required changing
ten times week, entailing q loss of
either 10000 bic feet of gas or the
inclusion of q quantity OF air, which
oy diminishing the illuminating pow
or, had to be rectified by the use of
greater quantity of expensive camel.
After mature consideration, 1 advised
the adoption of the system of the Brin
oxygen company, and the board con-
sented. A brief description Of this
method OF obtaining y separation and
imprisonment of oxygen from the
atmosphere may not be superfluOus.
Air is drawn through q small purifier
containing freshly burned lime,
which desiccates the air, and
all. o removes any carbonic acid gas,
and TO make assurance still more sure
IL then passes. through q vessel in
which there is caustic soda. Being
thus In an almost dry state, the air
Is forced through steel or iron retorts,
set vertically, which contain caustic.
6aryta in spongy condition and are
heated to a faint red heat (about
1862 Fairy The baryta, when heat.
ed and unuer pressure, has the pro-
perty of absorbing the oxygen and
rejecting the nitrogen, which es-
capes by means of valve. It
gives off this oxygen when q
vacuum is created. This work
OF alternately arresting and removing
the oxygen is performed In must
most admirable manner by an auto
matte machine, which may be worked
by steam or else by q gas engine.
This machine can be regulated al
will to suit the action of the baryta.
The pressure in the retorts Is 10
pounds and the vacuum 13 pounds. At
ter being distracted from the retorts,
the oxygen Is forced into q small
holder on the Gsdd & Mason princl-
pie, and thence conveyed to meter
regulated by valve to admit per
centof the quantity of the gas made.
The holder contains an amount equal
to one days demand, but, [ should
advise one of dou bic that capacity, or
even larger. The proportion of oxy-
gen in the holder is about 10 per
cent.
The process may claim to have the
following advantages:
Dor.
2. 1t also excludes the admission of
nitrogen, and in consequence of this,
less camel is required to produce the
necessary Illuminating power.
3. Increased value of the spent
oxide. 1t is impossible to get the
strength of the spent oxide TO IS per
cent without more frequent revivify-
ing in the air, at q greater expendi-
ture in labor than the value of the
extra Is per cent of the sulphur.
4. AS the oxide abstracts more sui
phur, less oxide is required annually.
5. Greater uniformity in the IL
Illuminating power of the gas, particu-
larly In small or medium sized
uyprEa