IMPROVEMENTS IN HEATING, AND IN APPARATUS EMPLOYED THEREIN
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 HEATING, AND IN APPARATUS EMPLOYED THEREIN."-A
communication from abroad by Samuel Anson Hill and Charles
Frederick Thumm, both of Oil City, in the County of Venango,
State of Pennsylvania, United States of America.
Sealed the 14th December 1869, and dated the 19th October 1869.
PROVISIONAL SPECIFICATION left by the said John Henry Johnson
at the Office of the Commissioners of Patents, with his Petition, ou
the 19th October 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 HEATING, AND IN APPARATUS EMPLOYED
THEREIN," a communication to me from abroad by Samuel Anson Hill
and Charles Frederick Thumm, both of Oil City, in the County of
Venango, State of Pennsylvania, United States of America, to be as
follows:-
This Invention consists in the use of certain peculiar apparatus for
mixing and combining with air or steam separately, or with air and

page_text: steam combined, a vapour or gas evolved from any liquid or solid that is
susceptible of being transmuted into a vapour or gas, which will when
thus combined form an inflammable admixture of vapourous or gaseous
matter capable of being burned as a substitute for any known article of fuel.
This apparatus consists of a combustion chamber and a mixing chamber,
into which latter a pipe opens for conveying the vapor or gas employed
from a gas generating furnace or for conveying hydrocarbon into the
mixing chamber from any suitable reservoir. A steam pipe connected
to a steam generator opens into the mixing chamber and openings for
the admission of air are made in such chamber. Steam flows through
the steam pipe into the mixing chamber, which will cause the vapor or
gas to be drawn through the gas supply pipe and air to be drawn
through the openings into the mixing chamber where the three elements,
viz., air, steam, and gas are combined and thoroughly mixed; from
the mixing chamber this admixture of gaseous or vapourous matter
passes into the combustion chamber, where it is ignited and burns with
vivid combustion and intense heat. The apparatus above described may
be used in any case where great heat is required.
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 19th April 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of Middle-
sex, Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Nineteenth day of October, in the year
of our Lord One thousand eight hundred and sixty-nine, in the thirty-
third 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 there.
after during the term therein expressed, should and lawfully might
make, use, excrcise, and vend, within the United Kingdom of Great

page_text: Britain and
Ireland, the Channel Islands, and Isle of Man, an
Invention for "IMPROVEMENTS IN HEAT.NG, AND IN APPARATUS EMPLOYED
THEREIN," a communication from abroad by Samuel Anson Hill and
Charles Frederick Thumm, both of Oil City, in the County of Venango,
State of Pennsylvania, 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
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 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, reference being had to the Drawings here-
unto annexed, and to the letters and figures marked thereon, that is
to say:-
The said Invention consists in the use of certain peculiar apparatus
herein-after described for mixing and combining with air or steam
separately, or with air and steam combined, or vapour or gas evolved
from any liquid or solid that is susceptible of being transmuted into a
vapour or gas, which will when thus combined form an inflammable
admixture of vapourous or gaseous matter capable of being burned as a
substitute for any known article of fuel.
The apparatus above referred to is illustrated both in perspective and
in geometrical section on the annexed Sheet of Drawings, and consists of
a combustion chamber A, and a mixing chamber B, into which latter a
pipe C opens for conveying the vapour or gas employed from a gas
generating furnace or for conveying hydrocarbon into the mixing
chamber B from any suitable reservoir. A steam pipe D connected to
a steam generator opens into the mixing chamber B, and openings e, f,
for the admission of air arc made in the combustion and mixing
chambers respectively. Steam flows through the steam pipe D into the
mixing chamber B, which will cause the vapour or gas to be drawn
through the gas supply pipe C, and air to be drawn through the openings
e and into the combustion and mixing chambers, in which latter
chamber B the three clements, viz., air, steam, and gas, are combined

page_text: and thoroughly mixed. From the mixing
From the mixing chamber B this admixture of
gascous or vaporous matter passes into the combustion chamber A,
where it is ignited and burns with vivid combustion and intense heat.
The apparatus above described may be used in any case where great heat
is required.
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,
the application and use of a mixing chamber provided with a gas,
vapour, or hydrocarbon supply pipe, also air inlets and a steam jet pipo
in combination with a combustion chamber also provided with air inlets,
the whole being arranged and operating substantially in the manner and
for the purpose herein-before described.
In witness whereof, I, the said John Henry Johnson, have to this
my Specification set my hand and seal, this Nineteenth day of
April One thousand eight hundred and seventy.
J. HENRY JOHNSON. (L.s.)