IMPROVEMENTS IN THE DISTILLATION OF SPIRIT AND IN APPARATUS TO BE USED FOR THIS PURPOSE
Year: 1882

page_text: LETTERS PATENT to Joseph Thomas Board of Bristol for an Invention of
"IMPROVEMENTS IN THE DISTILLATION OF SPIRIT AND IN APPARATUS TO BE
USED FOR THIS PURPOSE
"
·
PROVISIONAL SPECIFICATION left by the said Joseph Thomas Board at
the Office of the Commissioners of Patents on the 17th June 1882
JOSEPH THOMAS BOARD of Bristol. 'IMPROVEMENTS IN THE DISTILLATION OF
SPIRIT AND IN APPARATUS TO BE USED FOR THIS PURPOSE
"
At the present time alcoholic liquor obtained by fermentation is usually distilled
in what is known as a Coffey's still in which distillation is carried on continuously
that is fresh wash is supplied to it continuously as spent wash is drawn off from it.
The spirit run off from such a still is usually cooled in a refrigerator and
subsequently redistilled in what is known as a pot still for the purpose of further
rectification
According to my Invention I carry on simultaneously these two operations in
such a manner that I am enabled to use the hot spent wash passing off from the
Coffey's still for heating or aiding to heat the pot still and also in such a manner
that the residual weak spirit left in the pot still may be drawn off from it and
pumped back into the Coffey's still to be redistilled therein.
In this way the weak residual spirit left in the pot still can have the remaining
spirit which it contains distilled off in the cheapest manner and thereby loss of
spirit in the rectifying process is entirely avoided. To effect these objects I connect
the pipe by which the hot spent wash is run off from the Coffey's still to a jacket
surrounding the lower part of a pot still and allow the spent wash after passing
through the jacket to run off therefrom through a suitable outlet I also provide for
the admission of steam to the jacket to aid in heating the still
From the bottom of the pot still an exit pipe fitted with a cock is led down
through the jacket from this pipe a branch pipe is led to a pump by which the
weak spirit left in the pot still may be pumped back into what is called the
analysing chamber of the Coffey still this pump may be the same pump ordinarily
used for pumping back weak spirit from the bottom of the rectifying chamber into
the top of the analyzing chamber of the Coffey still.
In place of the pot still being heated by spent wash passed through a jacket
surrounding its lower part the spent wash might be passed through a coil of pipes
in the interior of the pot still-In place also of the first distillation being effected
in a Coffeys still it might be effected in other like stills in which the process of
distillation is carried on continuously.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Joseph Thomas Board in the Great Seal Patent Office on the
15th December 1882.
JOSEPH THOMAS BOARD of Bristol "IMPROVEMENTS IN THE DISTILLATION OF
SPIRIT AND IN APPARATUS TO BE USED FOR THIS PURPOSE
"
At the present time alcoholic liquor obtained by fermentation is usually distilled
in what is known as a Coffey's still in which distillation is carried on continuously
that is fresh wash is supplied to it continuously or spent wash is drawn off from it
The spirit run off from such a still is usually cooled in a refrigerator and
subsequently redistilled in what is known as a pot still for the purpose of further
rectification
According to my Invention I carry on simultaneously these two operations in
such a manner that I am enabled to use the hot spent wash passing off from the
Coffey's still for heating or aiding to heat the pot still and also in such a manner
that the residual weak spirit left in the pot still may be drawn off from it and
pumped back into the Coffey's still to be redistilled therein.
In this way the weak residual spirit left in the pot still can have the remaining
spirit which it contains distilled off in the cheapest manner and thereby loss of
spirit in the rectifying process is entirely avoided. To effect these objects I connect
the pipe by which the hot spent wash is run off from the Coffey's still to a jacket
surrounding the lower part of a pot still and allow the spent wash after passing
through the jacket to run off therefrom, through a suitable outlet. I also provide
for the admission of steam to the jacket to aid in heating the still From the
bottom of the pot still an exit pipe fitted with a cock is led down through the
jacket from this pipe a branch pipe is led to a pump by which the weak spirit
left in the pot still may be pumped back into what is called the analyzing chamber
of the Coffey still this pump may be the same pump ordinarily used for pumping
back weak spirit from the bottom of the rectifying chamber into the top of the
analysing chamber of the Coffey still. In place of the pot still being heated by
spent wash passed through a jacket surrounding its lower part, the spent wash
might be passed through a coil of pipes in the interior of the pot still. In place
also of the first distillation being effected in a Coffey's still it might be effected in
other like stills in which the process of distillation is carried on continuously.
What I claim is my improvements in the means and apparatus for the distillation
of spirit by which the hot spent wash from the Coffey or other continuous still can
be employed in heating the pot still and by which the weak residual spirit from
the pot still can be carried directly back to the continuous still, substantially as
herein described.
In witness whereof I the said Joseph Thomas Board have hereunto set my
hand and seal this Ninth day of December in the year of our Lord One