Burlington free press. [volume] (Burlington, Vt.) 1827-1865, 1842-11-11

MANUFACTURE OF CLEAIN AND STEARIN
FROM LARD.-A patent has been obtained
by Mr.. j. II. Smith, of New York. The
substance Of his process is as follows: Boil
the lard either by fire directly applied TO the
kettle, or by steam. When the latter is en-
| plovcd he uses a steam tube to descend from
the steam boiler into the vessel, and coilcd
round on the bottom so as to present large
heating surface TO the lard, provision being
made TO carry off the water and waste steam.
1t is usual TO periorate the tube with nume-
rous holes along the whole OF that portion
of it which is submerged below the lard, thus
allowing the whole Of The steam to pass into
and through the lard. To operate with adj
vantage, the vessel should be of copsidera-
bic capacity, holding, say, from ten to one
hundred barrels. The length of boiling will
of course vary according TO the quality of the
lard. That which is fresh may not require
TO be boiled more than five or six hours,
while that which has been long kept may re-
quirc twelve hours. 1t is of great impor-
lance to the periccting of the separation of
the stcarin and eleain that the boiling should
be continued for considerable period.
Alcohol is employed, mixed with the lard
in the boiler at the commencement of the
operation. When the lard is sufficiently
fluid, gradually pour and stir into it about
one gallon of alcohol TO every eighty gallons
of lard, taking care TO incorporate them as
intimately as possible; and this will cause a
perfect separation between the stearin and
and clean from each other, by the spon,a-
ncous granulation Of The former, which takes
| 4. L., I'll 4 l. 4
in a state of rest. Camphor is sometimes
combined with alcohol, dlssoIving abou, ono
fourth of pound in each gallon of alcohol,
which not only gives it an agreeable odor,
but appears to cooperate with the alcohol
in eilcciing the object in view.
After the boiling has been continued for
a sufficient length of time, the fire is with.
drawn or the steam cut off, and the mass is
allowed to cool sufficiently to be ladled OF
drawn off into hogshcads or other suitable
coolers, when 1t is to be left at perfect rest
to cool down and acquire the ordinary tenn
ne AZURE Of the atmosphere; and as the cool
ing proceeds the eranuia,ion will take place
and become perfect. The material is theI
to be put into bags and pressed moderated,
under any suitable press, which will CAUSE
tie ceain to flow out in state of great pu.
fily, there not being contained in it any per-
ceivable portion of stearin, and this practice
is to be continued until the stearin is as dry
IA, it can be made in this way.
The stearin is then, by very simpl,
process, which we lave mol space to civ,
at present, prepared to be made into can
dies, tie eleain being ready for use as oil.
We have seen these preparations, ant
they are fully equal 10 sperm oil and candles
and are much cheaper. The oil is sold IA
Is cents per gallon, and gives beaulil,
clear light aud enli,s neither smoke no
smell while burning. The candles also burr
as well as the best sperm. There are thre
large manufactures of oil and candles, w
believe at Cincinnati, and one at Philadel
, pla, aud one a, New York, and the deman'
| for the oil as yet exceeds the supply. Thi
will enable the farmer to dispose of his por
"ithou, difficulty, and we imagine that tn
, fears of some that there will be 10 market 70
, corn, because of the overthrow of ds,llerie
! by the ashingtonians, will be groundles,
4 kind and merciiul Providence has provi
A ded ways enough in which the fruits Of tn
. earth may be used for the benefit Of man.
Centrally. Y. Farmer.