Ix- GAS BURNERS
Year: 1862

page_text: LETTERS PATENT to William Clark, of 53, Chancery Lane, in the County
of Middlesex, Engineer and Patent Agent, for the Invention of "Ix-
GAS BURNERS."-A communication from abroad by
Mr. Jean Jouvet, of 29, Boulevart St. Martin, Paris, Merchant.
PROVEMENTS
PROVISIONAL SPECIFICATION left by the said William Clark at the
Office of the Commissioners of Patents, with his Petition, on the 30th
July 1862.
T, WILLIAM CLARK, of 53, Chancery Lane, in the County of Middlesex,
Engineer and l'atent Agent, do hereby declare the nature of the said Inven-
tion for "IMPROVEMENTS IN GAS BURNERS," to be as follows:-
The object of the present Invention is to increase the lighting power of gas
by applying a small cap of wire gauze in the form of a thimble to gas burners,
and especially those termed bat's-wing or fish-tail burners. The advantage
attending the use of this gauze cap are, 1st, that I am enabled to counteract
or regulate the initial pressure of the gas; 2ndly, the lighting power is
increased while burning the same quantity of gas; 3rdly, by the applica-
tion of this Invention I obtain a notable economy in the consumption of the
gas. As the cap is made of iron, copper, steel, platina, or other metal gauze,
it acts efficaciously, introducing a metal into the centre of the flame, which
thereby becomes ignited. The cap or thimble may be fitted to the ordinary

page_text: burners, or it may be mounted on a ring for securing it to moderator burners,
the round top may be modified when applying it to those burners termed
American burners, which in such case is made flat.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Clark in the Great Seal Patent Office on the
24th January 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
CLARK, of 53, Chancery Lane, in the County of Middlesex, Engineer and
Patent Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
l'atent, bearing date the Thirtieth day of July, in the year of our Lord One
thousand eight hundred and sixty-two, in the twenty-sixth year of Her reign
did, for Herself, Her heirs and successors, give and grant unto me, the
said William Clark, Her special licence, that I, the said William Clark,
my executors, administrators, and assigns, or such others as 1, the said
William Clark, 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,"
a communication to me from abroad by Mr. Jean Jouvet, of 29, Boulevart
St. Martin, Paris, Merchant, upon the condition (amongst others) that I, the
said William Clark, my exccutors 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 Clark, do hereby declare
the nature of the 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, reference being had to the Sheet of Drawings hereunto annexed,
and to the letters and figures marked thereon (that is to say) :-
This Invention relates to the application of a small cap or thimble of wire
gauze to gas burners, especially those termed fish-tail burners, whereby to
increase the lighting power for a given quantity of gas consumed, and con-

page_text: sequently lead to great economy in its consumption. This cap will be found
very efficacious, as it introduces a metallic body into the centre of the flame,
which thus becomes heated, while it further counterbalances or regulates the
initial pressure of the gas.
The annexed Drawings show this improvement applied to a fish-tail
burner.
Fig. 1 shows an elevation of the thimble cap; Fig. 2, a plan of same;
Fig. 3 shows the cap applied to a fish-tail burner; Figure 4 shows an elevation
of a cap, which is simply dropped on to the burner, where it remains securely
in position; while Fig. 5 shows a modification of the cap or thimble, having
its upper part flat, and suitable of application to American gas burners. The
same letters of reference indicate like parts seen in different positions.
a, metal gauze of iron, copper, steel, platina, or otherwise shaped to the
form of a thimble or cap, the edges of which are fixed to a rim b; c, fish-tail
burner;, cap with flat head for American burners.
Having described the nature of this Invention, and the manner of performing
the same, I declare that what I claim as the Invention to be protected by the
herein-before in part recited Letters Patent is, the improved cap above
described and represented in the Drawings annexed applied to all kinds of gas
burners in order to increase the lighting power of the gus.
In witness whereof, I, the said William Clark, have hereunto set my
hand and seal, this Twenty-fourth day of January, in the year of our
Lord One thousand eight hundred and sixty-three.
Witness,
JAMES DAISH,
53, Chancery Lane,
London.
W. CLARK.
(L.S.)