IMPROVEMENTS IN OR RELATING TO LAMPS
Year: 1885

page_text: I ALFRED JULIUS BOULT of 823 High Holborn, in the county of Middlesex,
Engineer do hereby declare the nature of the said invention for "IMPROVEMENTS
IN OR RELATING TO LAMPS a communication from Johann Carl Friedrich Renisch
of Neurode, German Empire to be as follows:-
"
The object of this invention is an improvement in Burners according to which
two discs are used in conjunction with a Chimney of peculiar form to spread out
the flame produced by a round wick and to give such a shape to this flame as will
be particularly adapted to cause an intimate commingling so that by the use of this
invention a very fine white and unusually, large flame is obtained.
A mitrailleuse burner is hereinafter described as an example, these improvements
may however advantageously be used in connection with other round flame
burners also.
As a characteristic feature in the construction of a burner embodying this
invention may be mentioned that the discs are adjustable relatively to one another
and to the aperture of the wick so that they may be set in such a manner as is
most advantageous for the purpose above stated and that the lamp chimney has a.
bellied portion which, commencing just over the aperture of the wick encloses the
two discs with a comparatively speaking wide surface the longitudinal section of
which (at the centre) is nearly circular and joins in a short curve the cylindrical
foot below and the conical draft tube or upper part of the Chimney above.
If the latter is very narrow the flame in it will become pointed whilst if the
top of the Chimney is comparatively speaking wide, the flame will assume a blunt
shape.
The construction of the discs and the manner of guiding the same which enables
the shape of the flame and consequently its brilliancy to be regulated by test may
be considerably varied.
It has to be mentioned that the two discs may either be circular or their figure
may depart more or less from that of a circle and their edges may be serrated and

page_text: that said discs have perforations which allow free passage of the air flowing in
through the mitrailleuse burner or the round burner; as the case may be and compel
this air to flow to the flame as rapidly as may be.
For their adjustment and guidance the discs may either be screwed upon one pin
or arbor fixed on the frame of the burner or the one disc may be secured or
soldered or screwed on either a pin or a tube the lower end whereof is formed into
a rack so that the disc may be adjusted by a pinion operated from outside in the
usual manner by a stud whilst the other disc is fixed on a sleeve screwed into the
burner frame. If desired the upper disc may be rivetted to a pin in the lower end
of which a rack is cut, whilst the lower disc is screwed upon said pin.
Hereinabove two discs have been spoken of but more than two may be used
if desired,

page_text: - I ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Engineer, do hereby declare the nature of this invention (a communication from
Johann Carl Friedrich Renisch of Neurode in the German Empire) and in what
manner the same is to be performed, to be particularly described and ascertained in
and by the following statement:→
The object of this invention is an improvement in burners according to which
two discs (a, a in the accompanying drawings) are used in conjunction with a
chimney A of peculiar form to spread out the flame produced by a round wick and
to give such a shape to this flame as will be particularly adapted to cause an
intimate commingling so that by the use of this Invention a very fine white and
unusually large flame is obtained.
In the accompanying drawings a mitrailleuse burner'is shown as an example
these improvements may however advantageously be used in connection with other
round flame burners also.
As a characteristic feature in the construction of a burner embodying this
invention may be mentioned that the discs are adjustable relatively to one another
and to the aperture of the wick so that 'they may be set in such a manner as is
most advantageous for the purpose above stated and that the lamp chimney A has a
bellied portion which, commencing just over the aperture of the wick encloses the two
discs a a¹ with a comparatively speaking wide surface the longitudinal section of
which (at the centre) is nearly circular and joins in a short curve the cylindrical
foot b below and the conical draft tube or upper part of the chimney above.
If the latter is very narrow the flame in it will become pointed as shown in
Figures 1 and 3, whilst if the top of the chimney is comparatively speaking wide,
the flame will assume a blunt shape, such as indicated by dotted lines in Figures 1
and 3.
The construction of the discs a a¹ and the manner of guiding the same which
enables the shape of the flame and consequently its brilliancy to be regulated by
test may be considerably varied.
It has to be mentioned that the two discs a a¹ may either be circular as shown
in Figure 2 or their figure may depart more or less from that of a circle and their.
edges may be serrated and that said discs have perforations which allow free
passage of the air flowing in through the mitrailleuse burner or the round burner
as the case may be and compel this air to flow to the flame as rapidly as may be.
For their adjustment and guidance the discs a a¹ may either both be screwed
upon one pin or arbor d fixed on the frame of the burner, or the one disc may be
secured or soldered or screwed on either a pin or a tube the lower end whereof is
formed into a rack so that the disc may be adjusted by a pinion g operated from
outside in the usual manner by a stud gl, whilst the other disc is fixed on a sleeve
screwed into the burner-frame. If desired the upper disc may be rivetted to a
pin f' in the lower end of which a rack is out, whilst the lower disc is screwed
upon said pin.
Hereinabove two discs have been spoken of but more than two may be used if
Janiend

page_text: Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated to
me by my foreign correspondent I declare that what I claim is,
1. In a round burner of the "mitrailleuse" or other type two or more discs a a¹
the position whereof may be varied both as to their distance from one another and
from the aperture of the wick said discs being perforated for the passage of air all
substantially as and for the purpose set forth.
2. For round burner lamps a chimney having a cylindrical foot from which rises
a bellied part of globular or approximately globular shape surrounding the discs a a¹
in the lamp and terminating in a tapering tube substantially as shown in the
drawings.
3. In a round burner lamp of the "mitrailleuse" or other type the adjustment
of the discs a a¹ by rack and pinion gearing or, its mechanical equivalent, sub-
stantially as set forth.