A NEW OR IMPROVED PROCESS OF PERCOLATION FOR THE PURPOSE OF EXTRACTING FATTY, RESINOUS, AND SIMILAR MATTERS.
Year: 1872

page_text: LETTERS PATENT to Augustus Deiss, of Plaistow, in the County of
Essex, Chemist, for the Invention of "A NEW OR IMPROVED PROCESS OF
PERCOLATION FOR THE PURPOSE OF EXTRACTING FATTY, RESINOUS, AND SIMILAR
MATTERS.'
"
Sealed the 18th February 1873, and dated the 20th August 1872:
PROVISIONAL SPECIFICATION left by the said Augustus Deiss at the
Office of the Commissioners of Patents, with his Petition, on the
20th August 1872.
I, AUGUSTUS DEISS, of Plaistow, in the County of Essex, Chemist, do
hereby declare the nature of the said Invention for "A NEW OR IMPROVED
PROCESS OF PERCOLATION FOR THE PURPOSE OF EXTRACTING FATTY, RESINOUS, AND
SIMILAR MATTERS," to be as follows:-
My Invention refers to the extraction of fatty, resinous, and similar
matters by means of solvents, such as bisulphide of carbon, spirits, and
ethers.

page_text: force them under more or less pressure to permeate the substance or
substances under operation, whereby I obtain a more rapid and complete
exhaustion of the materials, and consequently a more profitable result,
. SPECIFICATION in pursuance of the conditions of the Letters Patent, &
filed by the said Augustus Deiss in the Great Seal Patent Office on
the 19th February 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, Ì, AUGUSTUS
DEISS, of Plaistow, in the County of Essex, Chemist, send grecting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her 1
Letters Patent, bearing date the Twentieth day of August, in the year of
our Lord One thousand eight hundred and seventy-two, in the thirty-
sixth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me; the said Augustus Deiss, Her special licence that I,
the said Augustus Deiss, my executors, administrators, and assigns, or
such others as I, the said Augustus Deiss, my executors, adminis-
trators, and assigns, should at any time agree with, and no others,
from time to time and at all times thereafter during the term therein
expressed, should and lawfully might make, use, èxercise, and vend,
within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "A NEW OR IMPROVED PROCESS
OF PERCOLATION FOR THE PURPOSE OF EXTRACTING FATTY, RESINOUS, AND SIMILAR
MATTERS, upon the condition (amongst others) that-I,-the-said-Augustus
Deiss, my. cxccutors or administrators, by an instrument in writing
under my, or their, or one of their hands and scals, should, par-
ticularly describe and ascertain the nature of the said Invention, and
in what manner the same was to be performed, and cause the same to be-
filed in the Great Scal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Augustus Deiss, do hereby declare
the nature of my said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the
following statement:—

page_text: matters by means of solvents such as bisulphide of carbon, spirits, and
others.
Instead of using the solvents in a cold liquid state, I employ the same
either hot or in vapours, and force them under more or less pressure to
permeate and exhaust the substance or substances under operation,
whereby I obtain a more rapid and complete exhaustion of the materials
and consequently a more profitable result.
This Invention does away with the old, expensive, and dangerous
method of dissolving the extractive matter into a large bulk of solvent,
thus requiring an immense quantity of the solvent to be redistilled, which
operation occasions loss of solvents, of heat, and loss of time; by this
new method the solvent acts in a novel way of the best and most
powerful description, requiring little solvent to permeate and exhaust,
and a little heat for recovering the solvent, and this gives it the advantage
to operate on materials too poor to afford the expensive cold process of
using weak solution.
To mice whooof I the coid Ananstre Doice have horaunto sat