IMPROVEMENTS IN GAS BURNERS
Year: 1861

page_text: PROVISIONAL SPECIFICATION left by Herbert William Hart at the
Office of the Commissioners of Patents, with his Petition, on the 28th
January 1861.
I, HERBERT WILLIAM HART, of No. 3, Rue Bergère, in Paris, in the
Empire of France, Gas Engineer, 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 the
improvements more especially relate to that description of burners call Argand
gas burners.
In constructing an Argand gas burner below the point of the burner at
which the gas is ignited, an annular chamber is formed, in which felt or
other material, permeable by gas, is placed so as entirely to intercept the gas
in its passage from the main to the point of ignition, and cause it to permeate
the material in the chamber; and in order that there shall be no obstruction
to the gas after it has permeated the material in the chamber, the gas in place
of passing through a number of small holes to be burned as in ordinary Argand
burners, passes through an annular orifice; and in order to obtain a more
uniform shape of flame, I place in the centre of the flame a circular piece of
metal or other material, by preference a semicircular cup open at the top.
This cup is mounted on a rod, so that it may either be raised or lowered.
The glass chimney which surrounds the burner is made with a circular swell
upon it where it surrounds the metal cup, and the upper part of the glass
globe which surrounds the chimney is made moveable to allow of the swell on

page_text: the
gas,
the chimney passing down through it. In order to improve the combustion of
I apply to the top of the chimney a piece of metal or other material,
which rests on the top of the chimney; this piece is bent downwards so as
to descend into the chimney, and is shaped so as gradually to contract the
opening at its top. On the top of this piece is an ornamental bell-mouthed
cap, to which a reflector or shade may be fixed or removed at pleasure. In
order to prevent the current of air to the burner striking the flame at the
point of the burner at which the gas is ignited, I apply around the burner a
short chimney of glass or other material. This chimney is of slightly larger
diameter than the burner, and its top projects a short distance above the point
of the burner at which the gas is ignited. The exterior of this short glass
chimney is a short distance from the interior of the large chimney, so that air
can pass between them to the flame; and at the lower part of the burner, at
which point air passes both to the interior and exterior of the flame, I apply
of glass or other material open at the top, a small space being left
between the top of the cup and the glass globe for the passage of air. This
cup is for the purpose of protecting the burner from currents of air.
a cup
The improvements above described, as applied to an Argand burner, com-
bined with a chamber containing a material permeable by gas, can also be
applied to a greater or less extent to other burners; but I prefer to employ
them with an Argand burner, combined with a chamber containing a material
permeable by gas, as above described.