IMPROVEMENTS IN GAS BURNERS."
Year: 1859

page_text: LETTERS PATENT to William John Thompson Williamson, of 37, Gerrard
Street, Soho, in the County of Middlesex, for the Invention of
"IMPROVEMENTS IN GAS BURNERS."
PROVISIONAL SPECIFICATION left by the said William John Thompson.
Williamson, at the Office of the Commissioners of Patents, with his
Petition, on the 29th June 1859.
I, WILLIAM JOHN THOMPSON WILLIAMSON, of 37, Gerrard Street, Soho, in
the County of Middlesex, do hereby declare the nature of the Invention for
"IMPROVEMENTS IN GAS BURNERS," to be as follows:-
This Invention has for its object improvements in gas burners, and consists
in arranging the same in the following manner:-There is screwed on to the
end of the pipe supplying the gas a small metal chamber, into the bottom of
which there is fitted a small tube closed at the top, and furnished with a head.
of a conical or other suitable form, larger in diameter than the tube which
carries it; just underneath this head holes are formed through the sides of the.
tube, and it is by these holes that the gas passes from the supply pipe to the
interior of the chamber. In the top of the chamber a burner of an ordinary
construction is fitted, and the perforations of the burner are made considerably
larger in area than the holes through the sides of the small pipe by which the
gas enters the chamber. By this arrangement the gas in passing from the
supply pipe to the burner is caused to take a very circuitous course, passing

page_text: first along the under side of the head formed on the small tube, and then
between the upper side of the head and the side of the chamber which con-
tains it; and in consequence of the gas after it passes the ordinary regulating
cock having to pass through holes of smaller area than the perforations in the
burner, it escapes from the burner at a comparatively low pressure, and from
this an economy results.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William John Thompson Williamson in the Great Seal
Patent Office on the 27th December 1859.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
JOHN THOMPSON WILLIAMSON, of 37, Gerrard Street, Soho, in the County of
Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-ninth day of June, in the year of our Lord
One thousand eight hundred and fifty-nine, in the twenty-third year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said William John Thompson Williamson, Her special licence that I, the
said William John Thompson Williamson, my executors, administrators, and
assigns, or such others as I, the said William John Thompson Williamson, iny
exccutors, 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 William John Thompson
Williamson, ny 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 imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William John Thompson Williamson,
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 thereof, that is to say:―
This Invention has for its object improvements in gas burners, and consists

page_text: in arranging the same in the following manner:-There is screwed on to the
end of the pipe supplying the gas a small metal chamber, into the bottom of
which there is fitted a small tube closed at the top, and furnished with a head of
a conical or other suitable form, larger in diameter than the tube which carries
it; just underneath this head holes are formed through the sides of the tube, and
it is by these holes that the gas passes from the supply pipe to the interior of
the chamber. In the top of the chamber a burner of an ordinary construction
is fitted, and the perforations of the burner are made considerably larger in
area than the holes through the sides of the small pipe by which the gas
enters the chamber. By this arrangement the gas in passing from the supply:
pipe to the burner is caused to take a very circuitous course, passing first
along the under side of the head formed on the small tube, and then between
the upper side of the head and the side of the chamber which contains it; and
in consequence of the gas after it passes the ordinary regulating cock having
to pass through holes of smaller area than the perforations in the burner, it
escapes from the burner at a comparatively low pressure, and from this an
economy results. And in order that my said Invention may be most fully
understood and readily carried into effect, I will proceed to describe the
in arranging the same in the following manner :-There is screwed on to the
end of the pipe supplying the gas a small metal chamber, into the bottom of
which there is fitted a small tube closed at the top, and furnished with a head of
a conical or other suitable form, larger in diameter than the tube which carries
it; just underneath this head holes are formed through the sides of the tube, and
it is by these holes that the gas passes from the supply pipe to the interior of
the chamber. In the top of the chamber a burner of an ordinary construction
is fitted, and the perforations of the burner are made considerably larger in
area than the holes through the sides of the small pipe by which the gas
enters the chamber. By this arrangement the gas in passing from the supply:
pipe to the burner is caused to take a very circuitous course, passing first
along the under side of the head formed on the small tube, and then between
the upper side of the head and the side of the chamber which contains it; and
in consequence of the gas after it passes the ordinary regulating cock having
to pass through holes of smaller area than the perforations in the burner, it
escapes from the burner at a comparatively low pressure, and from this an
economy results. And in order that my said Invention may be most fully
understood and readily carried into effect, I will proceed to describe the
Drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
'
•
:
Figure 1 is an external view, and Figure 2 is a vertical section of a gas
burner constructed according to my Invention. a, a, is a metal tube, forming
a continuation of the supply pipe, by which the gas is supplied to the burner; b
is a sinall metal chamber, screwed or fastened on to this tube a, a, as shown; it
is made in two parts, which screw the one into the other, at 6*; c is a small
tube closed at the top, and furnished with the conical head c', of larger
diameter than the tube c. This tube c may either be mounted on the end of
the tube a, or this latter tube may be made shorter than is shewn in the
Drawing; and the tube c may be tapped on the outside, and be screwed into
the bottom of the chamber b. Underneath the head c¹, holes c, are formed
through the sides of the tube c, for the passage of the gas from the supply pipo
into the chamber 6; d is a burner of ordinary construction fitted into the top
of the chamber b, and by it the gas after passing from the chamber b, through
the fine wire gauze e, escapes, and is burnt. The upper end of the pipe a, I,
in some cases, leave entirely open, and then the total area of the holes c³, in
the tube c, should be considerably less than that of the outlet perforations in
the burner d. I, however, prefer to close in the top of the pipe a, and to
form in it perforations a³, of smaller area than the perforations in the burner,

page_text: by preference the inlet passages are about half the area of the outlet perforn-
tions, and when this is done the relation of the area of the holes in the tube c,
to that of the holes in the burner d, is not important so long as they and the
head c', will well diffuse and check the gas in the chamber b. It will be scen
that an important feature of this Invention is the employment of a chamber
beneath the burner, into which the gas is admitted through a passage or
passages of smaller sectional area than the passage or passages of the burner
at which the gas escapes, and the arranging such chamber in such manner
that the gas in its passage from the inlet passage or passages to the burner
may be caused to take a circuitous and interrupted course, so that the rush of
the gas may be effectually checked between the small induction passage or
passages and the large eduction passage or passages. I would remark that
the means of checking or interrupting the direct flow of the gas between a
comparatively small area of inlet to the comparatively larger outlet of a gas
burner may, according to my Invention, be varied, and even fibrous or such
like matters, may be introduced for that purpose between the inlet and outlet
passages, such as above described. At the same time I would remark that
I make no claim to the use of such or other means of checking the direct flow
of the gas between the inlet and outlet passages of gas burners where the inlet
passages to such burners are of larger sectional area than the outlet passages
thereof.
In witness whereof, I, the said William John Thompson Williamson, have
hereunto set my hand and seal, this Twenty-sixth day of September,
in the year of our Lord One thousand eight hundred and fifty-nine.