IMPROVEMENTS IN GAS BURNERS
Year: 1870

page_text: LETTERS PATENT to Heinrich Witthöft, of Copenhagen, in the
Kingdom of Denmark, for the Invention of "IMPROVEMENTS IN GAS
BURNERS."
PROVISIONAL SPECIFICATION. left by the said Heinrich Witthöft
at the Office of the Commissioners of Patents, with his Petition, on
the 5th February 1870. .
I, HEINRICH WITTHÖFT, of Copenhagen, in the Kingdom of Denmark,
3 do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
GAS BURNERS," to be as follows:-
The object of this Invention is to regulate the pressure of the gas
by regulation of the burner itself.
;
The nature of this Invention consists in an inside regulating valve.in
the shape of a screw, by preference with a cone point and a square head.
This valve is screwed in from below into the bottom of the upper hollow.
brass part of the burner. The more. it is screwed in the more will the

page_text: point or end close one or more holes in the side of said upper brass
part, which is screwed into a corresponding brass socket, which again is
screwed into the gas pipe and has one or more holes at the bottom for
the admission, of the gas to the interior of the burner. There is a
clearance between the upper brass part and its socket where the holes
in the former are situated to admit of the entrance of the gas through
the same.
On removing the upper brass part, which constitutes tho
burner itself, the regulating valve or screw may be turned one way or
the other as required, and the burner then screwed into its socket again.
It will be observed that this construction of burner prevents unnecessary
meddling with the regulation of the gas.
SPECIFICATION filed in pursuance of the conditions of the Letters
Patent, and of an Order of the Lord Chancellor, by the said Heinrich
Witthöft in the Great Seal Patent Office on the 11th August 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HEINRICH
WITTHÖFT, of Copenhagen, in the Kingdom of Denmark, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifth day of February, in the year
of our Lord One thousand cight hundred and seventy, in the thirty-
fourth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Heinrich Witthöft, Her special licence
that I, the said Heinrich Witthöft, my executors, administrators, and
assigns, or such others as I, the said Heinrich Witthöft, my exe-
cutors, administrators, and assigns, should at any time agreo 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
Heinrich Witthöft, 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 Scal Patent Office, on or before the
Thirteenth day of August One thousand eight hundred and seventy.

page_text: NOW KNOW YE, that I, the said Heinrich Witthöft, 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, reference being had to the accompanying
Drawings, and to the letters of reference marked thereon, that is
to say:
The object of this Invention is to-regulate-the-pressure-of-the-gas
by regulation of the burner itself.
The nature of this Invention consists in an inside regulating valve in
the shape of a screw, by preference with a cone point and a square head.
This valvo is screwed in from below into the bottom of the upper hollow
brass part of the burner. The more it is screwed in the more will the
point or end close one or more holes in the side of said upper brass
part, which is screwed into a corresponding brass socket, which again is
screwed into the gas pipe and has one or more holes at the bottom for
the admission of the gas to the interior of the burner. There is a
clearance between the upper brass part and its socket where the holes
in the former are situated to admit of the entrance of the gas through
the same. On removing the upper brass part, which constitutes the
burner itself, the regulating valve or screw may be turned one way or
the other as required, and the burner then screwed into its socket
again. It will be observed that this construction of burner prevents
unnecessary meddling with the regulation of the gas.
The burner is illustrated on the accompanying Sheet of Drawings, of
which Fig. 1 is an outside view, and Fig. 2 a vertical cross section
of the same.
The burner nipple c, which I prefer to make of the well-known
material called adamas, may be of any ordinary and well-known shape
and size according to circumstances, but I find the fish-tail or batwing
shape suitable for all ordinary purposes. It may be screwed or cemented
into the upper part 6, which is formed with a cavity d inside, and whose
lower part forms the seat and nut for a screw valve c. 2 or more small
holes drilled in an upward slanting direction admit the gas into the
cavity d, and from there to the burner nipple. The more the screw
valve is screwed in, which as it fits casily may be done by hand, the
more will the aforesaid holes be covered and the admission of gas
checked. The upper part 6 just described screws into the lower part a,
which is of sufficient size to let the stream of gas, which is checked by

page_text: entering through two or more small holes at the bottom enter the
upper part of the burner in a quiet stream, which is found in practice to
render this burner very economical.
And having now described the nature of this Invention, and tho
manner of carrying the same into effect, what I claim as my Invention
is, the combination in gas burners of a screw regulating valve in the
bottom of the upper part 6 and of a lower part a, in the manner and for
the purposes described.
In witness whereof, I, the said Heinrich Witthöft, have hereunto
set my hand and seal, this Fourth day of August, in the year
of our Lord One thousand eight hundred and seventy.