Year: 1887

page_text: Date of Application, 16th June, 1887
Complete Left, 14th Mar., 1888
Complete Accepted, 4th May, 1888
I, DAVID COWAN, of Mount Gerald, Larbert, in the County of Stirling, North
Britain, Civil Engineer, Manager for Carron Company incorporated by Royal
Charter, do hereby declare the nature of this Invention to be as follows, that is
to say:
My said Invention has for its object to improve and simplify the construction
of burners or stoves for heating by gas.
In carrying out the Invention the burner proper is made to consist of two simple
castings which when put together form an annular chamber combined with a straight
tubular part projecting outwards therefrom. The tubular and annular parts form a
mixing chamber in which the gas and air are combined the gas jet being directed in
the ordinary way into the outer open end of the tubular part so as to take air in with
it. The mixed gas and air issues from the annular chamber through orifices which
are simply formed by notches in the edge of one of the castings. In one modification
what may be termed the bottom casting is made with a bottom part and an inner side
projecting up and the notches are made in the edge of this inner side. The other
casting is made with an outer side and with a top part, and this top part fits close
upon the unnotched part of the edge of the bottom casting and projects a little
inwards beyond that edge, this projection preventing dust or liquid from getting into
the notches. In another modification the parts are transposed, the bottom casting
being made with an outer side having the notches in its top edge, whilst the top part
is made with an inner side and with the outer edge of its top projecting a little
beyond the notched edge. The two castings are fixed together by means of screws
cast in one casting and having the other casting secured thereto by nuts.
The burner proper may be fixed inside of an ornamental shell made with feet and
with parts for supporting a pan or vessel; or it may be fixed in any other desired
manner.
Dated this Driftnanth dow of Than 1007

page_text: COMPLETE SPECIFICATION.
Improvements in Burners or Stoves for Heating by Gas.
I, DAVID COWAN, of Mount (terald, Larbert, in the County of Stirling, North
Britain, Civil Engineer, Manager for Carron Company, incorporated by Royal Charter,
do hereby declare the nature of this invention and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement, that is to say :-
My said Invention has for its object to improve and simplify the construction of
burners or stoves for heating by gas.
In carrying out the Invention the burner proper is made of two simple castings
which when put together form an annular chamber combined with a straight tubular
part projecting outwards therefrom. The tubular and annular parts form a mixing
chamber in which the gas and air are combined the gas jet being directed in the
ordinary way into the outer open end of the tubular part so as to take air in with it.
The mixed gas and air issues from the annular chamber through orifices which
are simply formed by notches in the edge of one of the castings.
On an accompanying sheet of explanatory drawings two simple and convenient
modifications of my improved burners are shown, figure, 1, being a plan and figures, 2,
and 3, a side elevation and a longitudinal section of one modification which is of a
circular form in plan. Figures, 4, 5, and 6, are similar views of a second modification
which is of an oval form. It is to be understood that these views are given as
showing examples only of the various forms which may be given to my improved
burners.
In the modification shown in, figures 1, 2, 3, of the accompanying drawings what may
be termed the bottom casting is made with a bottom part, 7, and an inner side, 8,
projecting up and notches from which the mixed air and gas issue are made in the
edge of this inner side, 8. The other casting is made with an outer side, 9, and with
a top part, 10. The annular part of this top part, 10, fits close upon the unnotched
part of the edge of the side, 8, and projects a little inwards beyond that edge (as
shown by the dotted circle in figure, 1) this projection preventing dust or liquid from
getting into the notches.
In the modification shown in figures, 4, 5, 6, the parts are transposed, the bottom
part, 7, being made with an outer side, 11, having the notches in its top edge, whilst
the top part, 10, is made with an inner side, 12, and with the outer edge of its top
projecting a little beyond the notched edge. The two castings are fixed together by
means of screws cast in the top part, 10, and having the other part, 7, secured
thereto by nuts, 13. An ordinary gas jet nozzle, 14, is screwed in the outer end
of the top part, 10, and the gas issuing therefrom is thoroughly mixed with the
air which it carries in with it in the tubular part, 15, and annular chamber, 16, which
are formed by combining the two castings. Feet, 17, are formed on the bottom
part, 7, and parts, 18, for supporting a pan or vessel are also formed on the top

page_text: part, 10. The burner proper may however be made without the parts, 17, 18, and it
may be fixed inside of an ornamental shell made with feet and with parts for
supporting a pan or vessel, or it may be fixed in any other desired manner.
Having now particularly described and ascertained the nature of my said.
Invention and in what manner the same is to be performed, I declare that what
I claim is :-
1-Constructing burners or stoves for heating by gas substantially in the manner
herein before described with reference to figures, 1, 2, and 3, of the accompanying
drawings.
2-Constructing burners or stoves for heating by gas substantially in the manner
hereinbefore described with reference to figures, 4, 5, and 6, of the accompanying
drawings.