Improvements in Burners and Globes.
Year: 1898

page_text: Improvements in Burners and Globes.
I, JOHN WALSH, of 65, Wroughton Road, Clapham Common, in the County of
Surrey, Manufacturer, do hereby declare the nature of this invention to be as
follows:-
In order to magnify the light, or to better direct and utilize the same, or to obtain
in effect more light from a given quantity of gas, oil, or other illuminant, electrio
or other illuminating power I combine with a globe constructed as hereinafter
described a burner or light giving device also constructed in the manner herein-
after set forth.
The globe consists of or comprises an annular lens that is to say the globe is
annularly thickened in such a manner that it is either double convex or plano
convex in the appearance of a section taken upon any plane containing the axis of
the burner or equivalent fitting. The medial plane of the lens may be an inverted
cone or a cylinder according as the light is to be directed downwardly or horizon-
tally.
The burner or light emitting fitting is so made that the flames or light emitting
filaments or surfaces are in the form of straight shafts of approximately equal light
emitting power throughout their length such shafts being directed parallel to the
said medial plane of the lens at its nearest part, this plurality of shafts being
equidistant around the burner.
Where, as with the use of an incandescent mantle, it is not desirable to use
separate mantles of thin elongated form, the single central mantle may be employed
but its light emitting power is split up into a plurality of strips or shafts either by
the use of non combustible strips of asbestos or the like or by use of an opaque
screen surrounding the mantle and having slits cut therein for the passage of the
ravs.
In constructing the lens I make the magnifying curves from a radius of one
fourth of the diameter of the globe and keep in view the displacement of the glass
from its own weight.
The separated lights I employ in width not less than that of a candle flame nor
more than three quarter inches or thereabouts at their widest, this method also
applies to the electric incandescent light. I thicken the filaments as much as can
be practically done in order to bring them to the nearest width of a candle flame
and limit the horizontal curves before the lens to half an inch and may or may
not arrange the filaments close enough together so as to make two form one light
but not so close as to consume each other and to further increase the magnifying
power of my invention I use two globes the inside one has the magnifying curve
on the inside and the other on the outside this is for the purpose of convenience.
Dated this 17th day of March 1898.
HERBERT HADDAN & Co.,
Agents to Applicant.

page_text: Improvements in Burners and Globes.
I, JOHN WALSH, of 65, Wroughton Road, Clapham Common, in the County of
Surrey, Manufacturer, 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:-
In order to magnify the light, or to better direct and utilize the same, or to obtain
in effect more light from a given quantity of gas, oil, or other combustible illu-
minant or electric or other illuminating power, I combine with a globe constructed
as hereinafter described a burner or light giving device also constructed in the
manner hereinafter set forth.
Reference being made to the annexed drawings. Fig. 1 is a section through
globe and burner for gas. Fig. 2 is a plan thereof. Fig. 3 is a similar section
through the globe and fitting for electric incandescent lamps. Fig. 4 is a similar
section of globe and burner for oil-lamp. Fig. 5 is a similar section of globe and
burner for gas-light in which an incandescent mantle is used.
The globe A consists of or comprises an annular lens B, that is to say, the globe
is constructed so that the glass is annularly thickened or provided with a similar
chamber for water or other liquid in such a manner that its section is either double
convex or plano-convex in appearance, such section being taken upon any plane con-
taining the axis of the burner or equivalent fitting. The medial plane of the lens
may be an inverted cone, as in Fig. 1 which is necessary or desirable from manu-
facturing considerations when the lens is double convex, or a cylinder, as in Fig. 4,
when the lens is plano-convex, the one or other form being used according as the
light is to be directed downwardly or horizontally and according to the nature of
the illuminant or illuminating power. This medial plane represented by the
dotted line ab Fig. 1 or by the plane side a b¹ of the lens Fig. 4.
The burner or light emitting fitting C is so made that the flames or light emitting
filaments or surfaces D are in the form of straight shafts of approximately equal
light emitting power throughout their length, such shafts being preferably directed
parallel to the said medial plane of the lens at its nearest part, this plurality of
shafts being equidistant around the burner, that is to say, it is an essential feature
of this invention that the light should not be employed in the form of a sheet of
flame, but should be broken up into a plurality of independent and separated
pillars or shafts of light. Where, as with the use of an incandescent mantle, it is
not desirable to use separate mantles of thin elongated form, the single central
mantle may be employed; but its light emitting power is split up into a plurality
of strips or shafts either by the use of non-combustible strips of asbestos or the
like or by use of an opaque screen surrounding the mantle and having slits therein
for the passage of the rays.
In gas-burners or jets when used for this invention a plurality of holes or orifices
is employed to produce a plurality of straight and narrow flames. Electric incan-
descent lamps are also so made that the filaments lie in straight lines throughout
the greater part of their length, that is to say, with the least possible length of
curves and without double curves, and more than one filament may be placed in
each lamp, or several lamps may be used, so that the filaments serve the same pur-
pose as before described. In oil-lamps a plurality of wicks is used for the same
purpose of producing independent shafts of light.'
Having now particularly described and ascertained tho nature of this
invention and in what manner the same is to be performed I declare that what
I claim is
The combination with a transparent globe having an annular lens of an illumin-

page_text: ating fitting in the axis of said globe adapted to produce a plurality of straight
and independent light emitting shafts parallel to the medial plane of said lens at
its nearest part substantially as set forth.
Dated this 17th day of December 1898
HERBERT HADDAN & Co.,
Agents to Applicant, 18, Buckingham Street, Strand, W.C., London.