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serve to prevent the passage of any chips,
stones, or dirt into the resin-receiving vat,
shown at L. This vat is also provided with
steam-pipes, shown at 26, to which steam may
be supplied from the boiler in any convenient
manner. From the chamber L the liquid resin
is drawn into barrels by means of the stop-
cock 27, as clearly shown.
The continuous contact of the crude resin
from the time at which it enters the receiving-
chamber a aforesaid, until it is discharged
from the vessel H in the form of the spirits of
turpentine, or from the vat L in the form of
liquid resin, with steam or steam vapor, effects
the bleaching and purification of the resin, for
which I claim my apparatus to be applicable.
Sulphurous-acid gas or the fumes of burning
sulphur may be introduced into contact with
the resin to assist the steam in the promotion
of this object.
It will be plainly evident that all the pipes
with which the turpentine is to come into con-
tact during the process of distillation, as well
as the still or evaporation chamber, should be
of copper, while the receiving and condensing
vessels may be of wood.
Having described my apparatus, its arrange-
ment, and its mode of operation, what I wish
to secure by Letters Patent is the following-
1. The vessel B when divided into the com-
partments a and b, and each constructed as
stated, and the pipes e and 7, the same com-
bined and arranged so as to operate substan-
tially as described.
2. The vessel B, constructed as stated, still
C, and vessel D, when the same are connected
together, and the whole so combined and ar-
ranged as to operate substantially as described.
ARCHIBALD K. LEE.
Witnesses:
L. J. OLMSTEAD,
JAMEs C. KIDDELL.