IMPROVE- MENTS IN LANTERNS OR LAMPS to be as follows:
Year: 1884

page_text: I RICHARD EDWARD KEEN, of 23 Robertson Street, Hastings, in the County
of Sussex, Gentleman, do hereby declare the nature of my invention for "IMPROVE-
MENTS IN LANTERNS OR LAMPS to be as follows:-
"
My invention relates to lanterns or lamps chiefly designed for use in connection
with gas, and has for its objects to increase the illuminating effects of the latter
by the employment of reflectors as hereinafter described, and to provide means
whereby a current of air will be caused to pass through the lamp and thus
considerably reduce the heat thereof.
In carrying my said invention into practice I provide in the centre of the lantern
or lamp a vertical hollow reflector, outside of which the burners are situated in
such a manner that the light of the burning gas will be reflected thereby. The.
internal part of the reflector serves as a passage for air coming from outside the
lantern or lamp and whereby the same is cooled. This central reflector may be
circular or be provided with any suitable number of separate faces and may be of
such length as to extend from the bottom of the lantern to the top thereof or to
any intermediate position as may be most suitable for any particular kind of
lantern to which my invention may be applied; moreover the reflectors may be
made of any well known material suitable for the purpose. In the case of those
lanterns the sides of which are inclined, such for instance as is the case with many
of the lamps employed in the streets, the reflector will preferably be made with a
similar incline, on all sides thereof, that is to say, it will in such case present some-
what the appearance of an inverted cone.
I also, in some cases, provide a reflector around the inner upper portion of the
lantern or lamp by arranging the upper part or cover thereof (namely that part
which ordinarily extends upwards at an incline above the sides and joins the
chimney or cap) in such manner that it dips within the body of the lantern and
extends around the interior thereof at a suitable angle to reflect the light from the
burner or burners beneath the same.
By the employment of my invention considerable economy in the consumption
of gas may be ensured.

page_text: COMPLETE SPECIFICATION.
I, RICHARD EDWARD KEEN, of 23 Robertson Street, Hastings, in the County
of Sussex, Gentleman do hereby declare the nature of my invention for "IMPROVE-
MENTS IN LANTERNS OR LAMPS" and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:
My invention relates to lanterns or lamps, and has for its objects to increase the
illuminating effect of the gas or other substance burnt therein, and to provide for
the circulation of air through the lamp for the purpose of cooling the same.
I effect these objects by providing the lamp with a hollow reflector, which is so
arranged that the light of the gas or other illuminant will be reflected thereby,
and air will circulate through the said reflector and thus carry off some of the heat
imparted to the lamp by the combustion of the gas or other substance used therein.
In some cases, I provide the lamp with supplementary or auxiliary reflectors as
hereinafter described.
In the accompanying drawing, I have shewn various forms of my improved
·lantern or lamp.
Figure 1 is a side elevation, partly in section, of a lamp with two argand-
burners.
Figure 2 is a perspective view of a lamp of polygonal form and having two
burners.
Figure 3 is a sectional elevation of a lamp provided with supplementary or
auxiliary reflectors.
Like letters of reference indicate corresponding parts in the several figures.
a is the body or frame of the lantern or lamp, b is the hollow reflector, which is
arranged vertically between the burners c. In Figure 1, this reflector extends
from the bottom to the top of the lamp and has holes at b¹ through which are
passed the lamp-glasses d. The reflector b is open at the top and bottom so that
air from the outside of the lantern or lamp will circulate through the said reflector
and thus tend to cool the lamp. The reflector shown is of circular form in
horizontal section, but I sometimes make the reflector with any suitable number
of sides or faces, according to the number of burners employed.
In the case of lanterns or lamps the sides of which are equal, and in which two
or more burners are used, as shewn in Figure 2, for instance, the reflector b is
preferably made in the form of an inverted cone. This conical reflector is fixed
in any suitable manner to the base of the lamp and extends upward to within a
short distance from the top thereof.
It is obvious that the said reflector can, if desired, extend to any intermediate
point as may be most suitable for the particular kind of lantern to which my
invention is applied; and that one hollow reflector will serve for two or more
burners. Moreover the reflectors may be made of any suitable material.
In some cases, I provide supplementary or auxiliary reflectors around the inner
upper portion of the lantern or lamp as shewn at e, Figure 3. These reflectors
are conveniently formed by arranging the upper part or cover of the lantern or

page_text: lamp (that is to say, the inclined part which ordinarily extends upward above the
sides of the lamp and joins the chimney or cap) in such a manner that it projects
downward within the body of the lantern and extends around or across the
interior thereof at a suitable angle to reflect the light from the burner or burners
beneath.
By the employment of my invention considerable economy may be effected in
the consumption of the gas or other illuminant.
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
A lantern or lamp provided with a hollow reflector (with or without the
supplementary or auxiliary reflectors), substantially as, and for the purposes,
set forth.
HASELTINE, LAKE & Co.,
For the Applicant.