IMPROVEMENTS IN GAS BURNERS
Year: 1856

page_text: LETTERS PATENT to Gustave Dürrich, of Stuttgart, in the Kingdom of
Würtemberg, and of 77, Chancery Lane, in the County of Middlesex,
for the Invention of "IMPROVEMENTS IN GAS BURNERS."-A communi-.
cation.
Sealed the 12th December 1856, and dated the 26th June 1856.
PROVISIONAL SPECIFICATION left by the said Gustave Dürrich at the
Office of the Commissioners of Patents, with his Petition, on the
26th June 1856.
I, GUSTAVE DÜRRICH, of Stuttgart, in the Kingdom of Würtemberg, and
of 77, Chancery Lane, in the County of Middlesex, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN GAS BURNERS," to be as
follows (that is to say):-
My Invention, which has reference to improvements in regulating and
economizing the consumption of gas, consists in narrowing or contracting the
tubular neck or cavity beneath the burner, so that the first passage or passages
through which the gas has to pass, and by which the consumption is regulated,
shall be smaller than the opening of the gas burner where the gas is con-
sumed, whereby a more perfect regulation and supply of gas is obtained than
by those at present in use.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Gustave Dürrich in the Great Seal Patent Office on the
24th December 1856.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GUSTAVE
DÜRRICII, of Stuttgart, in the Kingdom of Würtemberg, and of 77, Chancery
Lane, in the County of Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-sixth day of June, in the year of our Lord
One thousand eight hundred and fifty-six, in the twentieth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Gustave Dürrich, Her special licence that I, the said Gustave Dürrich, my
executors, administrators, and assigns, or such others as I, the said Gustave
Dürrich, my executors, administrators, 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, exercise,
and vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN GAS
BURNERS," upon the condition (amongst others) that I, the said Gustave
Dürrich, 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 Gustave Dürrich, do hereby declare the
nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement, and the Drawings therein referred to (that is to say):-
My Invention, which has reference to improvements in regulating and
economizing the consumption of gas, consists in narrowing or contracting the
tubular neck or cavity beneath the burner, so that the first passage or passages
through which the gas has to pass shall be smaller than the opening of the gas
burner where the gas is consumed, whereby a more perfect regulation and
supply of gas is obtained than by those at present in use.
But in order that this my said Invention may be more fully understood and
readily carried into effect, I now proceed to describe it, by the aid of the
accompanying Drawings,..reference being had to the letters and figures
thereon marked (that is to say):-

page_text: Fig. 1 represents a front elevation of my improved gas burner; Fig. 2,
a longitudinal section; Fig. 3, the tubular neck or cavity of the burner
detached; Fig. 4, a top or plan view; Fig. 5, an underneath view of the
same; Fig. 6, a transverse vertical section, taken through the dotted line in
Fig. 5, showing another description of jet with a single hole; Fig. 7, the
lower portion of the burner, into which the tubular neck or cavity screws;
Figs. 8 and 9, top or plan views of the gas-consuming jets; Figs. 10 and 11,
corresponding views of the lower or regulating jets; Fig. 12, another descrip-
tion of burner, showing the jet at right angles with the tubular neck or
cavity; Fig. 13, the same, partly in section; Fig. 14, a top or plan view of
the jet and shoulder of the burner, separately shown; and Fig. 15, an end
view of the burner. In each Figure the same letters of reference denote
similar corresponding parts.
A, A, stem or burner; B, B, upper shoulder, into which the gas-consuming
jets are fitted; C, C, two-hole jet; D, D, tubular neck or cavity, fitting into
the lower portion of the stem or burner, and provided with a small-hole jet
E, E, for the purpose of narrowing or contacting the passage and equalizing
the pressure and flow of gas to the flame, in the direction indicated by the
arrows; F, F, screw for attaching the burner to the service pipe.
Having now fully described and ascertained the nature of this my said
Invention, and the manner in which the same is to be performed and carried
into effect, I would have it clearly understood that I do not by any means
intend to confine myself to the precise details herein-before set forth and
described, as the same might be varied without departing from the general
principle of these my said improvements; but that which I do claim as new,
and of my said Invention, is, the construction and employment of the con-
tracted tubular necks or cavities within the stems of gas burners, for the
purpose of regulating and economizing the consumption of gas, in the manner
and for the purposes herein-before set forth and described.
In witness whereof, I, the said Gustave Durrich, have hereunto set my
hand and seal, this Twenty-third day of December, in the year of our
Lord One thousand eight hundred and fifty-six.
GUSTAVE DURRICH (L.S.)