IMPROVEMENTS IN GAS BURNERS
Year: 1851

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HARDING
HALLEN, of Burslem, in the County of Stafford, Manufacturer, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent, under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Tenth day of May (One
thousand eight hundred and fifty-one), in the fourteenth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Harding Hallen, my exors, admors, and assigns, Her especial licence, full
power, sole privilege and authority, that I, the said Harding Hallen, my
exors, admors, or assigns, and such others as I, the said Harding Hallen, my
exors, admors, or assigns, should at any time agree with, and no others, from
time to time and at all times during the term of years therein expressed, should
and lawfully might make, use, exercise, and vend, within England, Wales, and
the Town of Berwick-upon-Tweed, my Invention of "IMPROVEMENTS IN GAS
BURNERS;" in which said Letters Patent is contained a proviso, that I, the
Harding Hallen, shall cause a particular description of the nature of my said
Invention, and in what manner the same is to be performed, by an instrument
in writing under my hand and seal, to be inrolled in Her Majesty's High
Court of Chancery within six calendar months next and immediately after
the date of the said in part recited Letters Patent, as in and by the same,
reference being thereunto had, will more fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Harding Hallen, do hereby declare that the nature of my said Invention, and

page_text: in what manner the same is to be performed, are fully described and ascer-
tained in and by the present Specification thereof, reference being had to the
Drawings, hereunto annexed, that is to say:-
My Invention consists of a method of combining together "pot or fire clay,"
or other clay composed of any mixture of potters' materials with metal in the
construction of gas burners, the external portion of the burner being of metal,
and that portion of the burner in which the holes are pierced being made of
clay, which is much better calculated to resist the action of the flame or the
corrosive action of the products of combustion which speedily destroy gas
burners made entirely of metal. The improved compound gas burners are
also more accurately manufactured in the first instance, and insure a uniform
and permanent flame, which will retain its size and shape for a lengthened
period.
Figure 1 is a vertical section of a fish-tail burner; and Figure 2 a similar
section of an Argand burner constructed according to my said Invention. In
each case b represents the external portion of the burner, and a, a, the inner
portion, which consists of a button or ring made of clay, fitting exactly into or
upon the other; Figure 3 is an external view of the button of clay used in the
formation of the fish-tail burner; and Figure 4 is a similar view of the ring of
clay employed in the Argand burner. The button shewn in Figure 3, and the
ring in Figure 4, are each formed in suitable moulds while the clay is in a
plastic state, after which they are dried and burnt till of sufficient hardness,
when they are fixed into their place in the body of the burner, either by
cement alone, or by cement and by burnishing down the edge of the metal
upon the upper surface of the clay. It will be obvious that a great many
varieties, if not all kinds of gas burners may be formed in the manner just.
explained for forming fish-tail and Argand gas burners, that is to say, by the
insertion of perforated buttons, rings, or pieces of "pot or fire clay" into that
part of the burner through which the gas issues.
And having now described my said Invention, and in what manner the
same is to be performed, I declare that what I claim as of my Invention is,
the constructing of gas burners of a combination of metal and "pot or fire
clay" or other clay composed of any mixture of potters' materials as above
described.
In witness wherefore, I, the said Harding Hallen, have hereunto set my
hand and seal, this Eighth day of November, in the year of our Lord
One thousand eight hundred and fifty-one.
HARDING (L.B.) HALLEN.

page_text: AND BE IT REMEMBERED, that on the Eighth day of November, in
the year of our Lord 1851, the aforesaid Harding Hallen came before our
said Lady the Queen in Her Chancery, and acknowledged the Specification
aforesaid, and all and every thing therein contained and specified, in form
5 above written. And also the Specification aforesaid was stamped according
to the tenor of the Statute made for that purpose.