IMPROVEMENTS IN OBTAINING EXTRACT FROM HOPS
Year: 1869

page_text: LETTERS PATENT to John Henry Johnson, of 47, Lincoln's Inn
Fields, in the County of Middlesex, Gentleman, for the Invention
of "IMPROVEMENTS IN OBTAINING EXTRACT FROM HOPS."-A communi-
cation from abroad by Hugh Burgess, of Royers Ford, Montgomery
PROVISIONAL SPECIFICATION left by the said John Henry Johnson
at the Office of the Commissioners of Patents, with his Petition,
on the 21st July 1869.
I, JOHN HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County
of Middlesex, Gentleman, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN OBTAINING EXTRACT FROM HOPS," a com-
munication from abroad by Hugh Burgess, of Royers Ford, Montgomery
County, Pennsylvania, in the United States of America, to be as
follows:-
This Invention relates to the obtainment of the extract from hops,
and consists in digesting the hops from which the extract is to be
obtained in bi-sulphide of carbon, either alone or mixed with alcohol,

page_text: ether, or chloroform, until the flavoring principle or essence of the hops.
is extracted. The bi-sulphide of carbon is, then driven off by the
application of heat, the extract being left behind. In order to effectually
collect the extract paper or other bibulous or absorbent substance may
be placed in the retort or vessel, which will take up the matter in the
same, but will only give off the bi-sulphide on the application of heat.
The extract remaining in the pores of the paper or other absorbent
material may be readily obtained by immersing the said material in
water or wort.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Henry Johnson in the Great Seal Patent
Office on the 20th January 1870.
TO ALL TO WHOM THESE PRESENTS-SHALL COME, I, JOHN
HENRY JOHNSON, of 47, Lincoln's. Inn Fields, in the County of
Middlesex, Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-first day of July, in the year
of our Lord One thousand eight hundred and sixty-nine, in the 33rd
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said John Henry Johnson, Her special license
that I, the said John Henry Johnson, my executors, administrators,
and assigns, or such others as I, the said John Henry Johnson,
my executors, administrators, or 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, exercise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an Inven-
tion for "IMPROVEMENTS IN OBTAINING EXTRACT FROM HOPS," a communication
from abroad by Hugh Burgess, of Royers Ford, Montgomery County,
Pennsylvania, in the United States of America, upon the condition
(amongst others) that I, the said John Henry Johnson, my executors or
administrators, by an instrument in writing under my hand and seal,
should particularly describe and ascertain the nature of the said In-
vention, and in what manner the same was to be performed, and cause
the same to be filed in the Great Seal Patent Office within six calendar
months next and immediately after the date of the said Letters Patent.

page_text: NOW KNOW YE, that I, the said John Henry Johnson, do hereby
declare the nature of the said Invention, and in what manner the.
same is to be performed, to be particularly described and ascertained
in and by the following statement, that is to say:-
The said Invention relates to the obtainment of the extract from hops,.
and eonsists in digesting the hops from which the extract is to be
obtained in bi-sulphide of carbon, either alone or mixed with alcohol,
ether, or chloroform, until the flavoring principle or essence of the hops
is extracted. The bi-sulphide of carbon is then driven off by the appli-
cation of heat, the extract being left behind. In order to effectually
collect the extract paper or other bibulous or absorbent substance may
be placed in the retort or vessel, which will take up the matter in the
same, but will only give off the bi-sulphide on the application of heat.
The extract remaining in the pores of the paper or other absorbent
material may be readily obtained by immersing the said material in
water or wort.
Having now described and particularly ascertained the nature of the
said Invention, and the manner in which the same is or may be used
or carried into effect, I would observe in conclusion that what I consider
to be novel and original, and therefore claim as the Invention secured
to me by the herein-before in part recited Letters Patent is,-
First. Obtaining extract of hops by digesting the same in bi-sulphide
of carbon, either alone or in conjunction with alcohol, ether, or chloroform,
and driving off the volatile liquid by the application of heat, substantially
as herein-before described.
Second. Collecting the extract of hops by the use of paper or other
bibulous or absorbent substances substantially in the manner herein-
before described.
In witness whereof, I, the said John Henry Johnson, have to this
my Specification set my hand and seal, the Twentieth day of
January One One thousand eight hundred and seventy.