AN IMPROVED PROCESS FOR EXTRACTING THE USEFUL SUBSTANCE OF HOPS, AND FOR MANUFACTURING A PURE AND CON- CENTRATED EXTRACT OF HOPS
Year: 1870

page_text: LETTERS PATENT to William Edward Newton, of the Office for Patents,
66, Chancery Lane, in the County of Middlesex, Civil Engineer,
for the Invention of "AN IMPROVED PROCESS FOR EXTRACTING THE
USEFUL SUBSTANCE OF HOPS, AND FOR MANUFACTURING A PURE AND CON-
CENTRATED EXTRACT OF HOPS." -A communication from abroad by
Charles Augustus Seely, of the City and State of New York, United
States of America
at the Office of the Commissioners of Patents, with his Petition;.
on the 8th November 1870.
I, WILLIAM EDWARD NEWTON, of the Office for Patents, 66, Chancery
Lane, in the County of Middlesex, Civil Engineer, do hereby declare
the nature of the said Invention for," AN IMPROVED PROCESS FOR EXTRACTING
I, WILLIAM EDWARD NEWTON, of the Office for Patents, 66, Chancery
Lane, in the County of Middlesex, Civil Engineer, do hereby declare
the nature of the said Invention for " AN IMPROVED PROCESS FOR EXTRACTING

page_text: THE USEFUL SUBSTANCE OF HOPS, AND FOR MANUFACTURING A PURE AND CON-
CENTRATED EXTRACT OF HOPS," to be as follows:-
This Invention is based on the fact that the ordinary petroleum oils
are rapid and complete solvents of the essential oils, and of the bitter
matter of hops, while they have no solvent action on the other con-
stituents of the plant, which in practical operations are either useless
or harmful.
The improved process consists in steeping the hops in petroleum oil,
and then by heat, stirring, digestion, and percolation promoting the solvent
action of the oil. When by such means the extractible matter of the
hops is dissolved the solution of hop extract in oil is separated from the
refuse matter and the solvent is volatilized or distilled off. Although
any petroleum oil which has a boiling point below 212° Fahrenheit may
be employed, a gasoline which boils at about 100° Fahrenheit is preferred,
because at that temperature the essential oil of hops will not escape
The extract of hops
from the extract solution on distilling the solvent.
is of a pasty consistency, more or less thin in proportion to the essential
oil contained in it.
In order to increase its solubility in water, and in order to give it a
more convenient consistency for measuring and transferring, alcohol is
added to give it the consistency of thin syrup. The process includes
the use of artificial as well as natural or native light hydrocarbons which
are solvents of the bitter substance and of the oil of hops.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Edward Newton in the Great Seal Patent 28
Office on the 4th May 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
EDWARD NEWTON, of the Office for Patents, 66, Chancery Lane, in the
County of Middlesex, Civil Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her 3
Letters Patent, bearing date the Eighth day of November, in the year
of our Lord One thousand eight hundred and seventy, in the thirty-
fourth year of Her reign, did, for Herself, Her heirs and successors,

page_text: give and grant unto me, the said William Edward Newton, Her special
Licence, that I, the said William Edward Newton, my executors, adminis-
trators, and assigns, or such others as I, the said William Edward
Newton, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times there-
after 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 Invention for
"AN IMPROVED PROCESS FOR EXTRACTING THE USEFUL SUBSTANCE OF HOPS AND
FOR MANUFACTURING A PURE AND CONCENTRATED EXTRACT OF HOPS," being a
communication to me from abroad by Charles Augustus Seely, of the
City and State of New York, United States of America, upon the con-
dition (amongst others) that I, the said William Edward Newton, my
executors or administrators, by an instrument in writing under my, or
their, or one of their hands and seals, should particularly 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 Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Edward Newton, 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)
This Invention is based on the discovery that the ordinary petroleum
oils are rapid and complete solvents of the essential oils and of the bitter
matter of hops while they have no solvent action on the other con-
stituents of the plant, which in practical operations are either useless
or harmful.
The improved process which forms the subject of the present Invention
consists in steeping the hops in petroleum oil, and then by heat, stirring,
digestion, and percolation promoting the solvent action of the oil. When
by such means the extractible matter of the hops is dissolved the solution
of hop extract in oil is separated by filtration from the refuse matter
and the solvent is volatilized or distilled off, by heat, I thus obtain the
extract free from the solvent and other foreign matter. The kinds of
petroleum which are preferred to be used are known commercially under
the names of naptha and gasoline, and are the lighter and more volatile

page_text: Second. I claim preparing extract of hops in the manner and by the
process herein described.
•
Third. The mixture of alcohol and extract of hops as and for the
purpose herein set forth.
In witness whereof, I, the said William Edward Newton, have here-
unto set my hand and seal, the Fourth day of May, in the
year of our Lord One thousand eight hundred and seventy-
1
one.