AN IMPROVED RAILWAY CARRIAGE ROOF LAMP FOR ILLUMINATING PURPOSES
Year: 1885

page_text: WALTER PETER CHERRY, GEORGE ERNEST CHERRY, and CHARLES EDWIN
CHERRY all of Porter Street in the Town or Borough of Kingston upon Hull and
county of the same Town, Lamp Manufacturers, do hereby declare the nature of
the said invention for AN IMPROVED RAILWAY CARRIAGE ROOF LAMP FOR
ILLUMINATING PURPOSES to be as follows :-
Our Invention relates to Improvements in the construction of a Railway carriage
roof lamp for burning petroleum or other mineral oil. In order to carry out our
said Improvements, we construct a portable lamp for burning petroleum or other
mineral oil, also a suitable case for holding the said lamp, the said improved
portable lamp consists of forming a metal shade or reflector with a chimney
attached thereto, the said shade or reflector being made so as to fit closely into the
lamp case hereinafter described, and so as to rest on a projecting rim formed on
the inside of the said lamp case, also to prevent air being supplied to the burner to
support combustion, except through tubes provided for the purpose and hereinafter
described. The burner we employ for burning the petroleum or other mineral oil
is of ordinary construction and such as are commonly used for petroleum or mineral
oil lamps, only the outer air passages to the said burner are stopped up, and two
bent or straight tubes are fitted to the said burner instead, and are carried upwards
and through the metal shade or reflector and securely fitted thereto, so as to supply
air to the burner to support combustion of the flame, a bevelled toothed wheel is
fitted to the spindle of the burner used for raising or lowering the wick, a corre-
sponding bevelled toothed wheel is geared with the same and a spindle is attached
thereto, and is carried upwards and through the metal shade or reflector, and
terminating with a button or knob, so as to raise or lower the wick when the
lamp is placed in the said lamp case. The oil chamber to supply oil to the burner
is made of glass or metal, and is so arranged as to screw on to the bottom part of
the lamp burner, a tin or other metal tube is fitted to the top side of the reflector,
to act as a wind guard, so as to protect the two air tubes, and to prevent the flame
of the burner from being extinguished, when the lamp is burning in the lamp case.
The lamp case for holding the portable petroleum lamp, is made in a similar form
to the roof lamps now used for burning colza oil, only the top part of the said,
lamp case is dispensed with, and a new form of top is fitted thereto, which consists.

page_text: of a cap made of tin or other suitable metal with a chimney attached thereto, at
the top of the said chimney, another short chimney is fitted, and is so arranged as
to be partly open at the bottom part thereof, at the outside of the said metal cap,
another cap is fitted of conical shape, the top part of the said cap is made with
perpendicular sides and is perforated with holes of suitable size, at the outside of
the same a metal tube is fitted to act as a wind guard, to prevent wind from
entering the lamp, a wire ring is also fitted to the top of the said conical cap for
carrying the lamp about, the lower part of the conical cap is left open or perforated,
so that any wind entering the top of the cap, escapes at the lower part thereof, and
thus prevents the wind entering the chimney, to extinguish the lamp flame, the
lower part of the said lamp case, is perforated above the glass, used for shewing
the light, so as to admit air into the interior of the lamp case, to support combustion
of the flame, when the lamp is burning therein, The lamp is secured in the case
by means of two bayonet fasteners.
WALTER PETER CHERRY.
GEORGE ERNEST CHERRY.
CHARLES EDWIN CHERRY.
COMPLETE SPECIFICATION.
An Improved Railway Carriage Roof Lamp for Illuminating
Purposes.
WALTER PETER CHERRY, GEORGE ERNEST CHERRY and CHARLES EDWIN
CHERRY of 96 Porter Street, in the Town and Borough of Kingston upon Hull, in
the County of the same Town, Lamp Manufacturers do hereby declare the nature
of our invention for AN IMPROVED RAILWAY CARRIAGE ROOF LAMP FOR ILLUMI-
NATING PURPOSES and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
Our Invention relates to improvements in the construction of a railway carriage
roof lamp for burning petroleum or other mineral oil. In order to carry out our
said improvements we construct a portable lamp for burning petroleum or other
mineral oil also a suitable case for holding the said lamp, the said improved.
portable lamp consists of forming a metal shade or reflector with a chimney
attached thereto, the said shade or reflector being made so as to fit closely into the
lamp case hereinafter described, an enamelled iron or silvered copper reflector is
also fitted to the said metal shade or reflector herein before described, so as to give
inore reflecting power.

page_text: The metal shade or reflector is made to rest on a projecting rim formed on the
inside of the said lamp case, also to prevent air being supplied to the burner to
support combustion except through tubes provided for the purpose and hereinafter
described, the burner we employ for burning the petroleum or other mineral oil is
of ordinary construction and such as are commonly used for petroleum or mineral
oil lamps, the gallery of the burner being dispensed with and the outer air passages
to the same stopped up and two bent or straight tubes are fitted to the said burner
instead and are carried upwards and through the metal shade or reflector and
securely fitted thereto, so as to supply air to the burner to support combustion of
the flame. A bevelled or mitre toothed wheel is fitted to the spindle of the burner
used for raising or lowering the wick, a corresponding toothed wheel is geared
with the same and a spindle is attached thereto and is carried upwards and through
the metal shade or reflector and terminating with a button or knob so as to raise
or lower the wick when the lamp is placed in the said lamp case. The oil chamber
to supply oil to the burner is made of glass or metal and is so arranged as to screw
on to the bottom part of the lamp burner. A tin or other metal tube or box
perforated with holes is fitted to the top side of the reflector to act as a wind guard
so as to protect the two air tubes and to prevent the flame of the burner from
being extinguished when the lamp is burning in the lamp case. The lamp case for
holding the portable lamp is made in a similar form to the roof lamps now used
for burning colza oil, only the top part of the lamp case is dispensed with and a
new form of top is fitted thereto, which consists of a cap made of tin or other
suitable metal with a chimney attached at the top part thereof, the sides of the
chimney is perforated with rows of holes, the top of the chimney being closed by a
metal cap, at the outside of the said perforated chimney another short chimney is
fitted to act as a wind guard to prevent the wind entering through the perforations
in the sides of the chimney, at the outside of the said cap another metal cap is
fitted over of conical shape, the top part of the said cap is made with perpendicular
sides and is perforated with holes of suitable size through the sides of same, at the
outside thereof a metal tube is fitted to act as a wind guard to prevent wind from
entering the lamp. A wire ring or hoop is fitted to the top of the said conical cap
or at the outside of the metal tube or wind guard for carrying the lamp, the lower
part of the conical cap is left open or perforated so that any wind entering the top
of the cap escapes at the lower part thereof and thus prevents same entering the
chimney to extinguish the lamp flame. The lower part of the said lamp case is
perforated through the sides just above the glass used for shewing the light, so as
to admit air into the interior of the lamp case to support combustion of the flame
when the lamp is burning therein. The row of air holes in the lamp case between
the two brass rings for conveying air into the interior of the lamp case is stopped
up. The lower brass ring fixed on the outside of the lamp case is perforated all
round the top with holes of suitable size. to break any suction or force pressure
from acting on the flame by the opening or closing of the carriage door when the
lamp is burning in the carriage.
The accompanying drawings illustrate a railway carriage roof lamp for illu-
minating purposes constructed according to our invention. Figure 1 is a section
of the portable lamp. A is the burner which is of ordinary construction the
gallery of the said burner being dispensed with and the air passages at the bottom
part of the burner are stopped up by means of a metal plate. B B are two bent
air tubes which are fitted to the body of the burner A and carried upwards through
the metal shade or reflector C and securely fitted thereto for conducting air to the
burner to support combustion of the flame. C is a metal shade or reflector with
the chimney D attached thereto, at the under side of the said reflector O an
enamelled iron or silvered copper reflector is fitted thereto for reflecting the light
downwards. E is the oil chamber which is made of glass or metal and is arranged
with a screw collar for screwing on to the body of the burner A. F is a circular
metal box perforated with holes through the sides of same so as to protect the air
tubes to the burner A. G is a button and spindle with a mitre toothed wheel

page_text: attached to the bottom part of the spindle and geared with a corresponding mitre
toothed wheel fitted on to the spindle of the burner A used for raising or lowering
'the wick.
Figure 2 shews section of the lamp case with the portable lamp as shewn at
figure 1 fitted therein. H is a metal cap made conical shape fitted to the top part
of the lamp case. J is a metal chimney fitted to the top part of the conical cap H
the sides of the chimney J being perforated with rows of holes, the top part of the
chimney is closed by a metal cap or plate. K is a metal chimney or tube fitted at
the outside of the perforated chimney J to act as a wind guard to prevent wind
entering through the perforations in the sides of the chimney. J. I is a conical cap
fitted over the conical cap H, the top part of the said cap I is made with perpen-
dicular sides and is perforated with holes of suitable size, the top of the cap. being
domed shaped. The lower part of the cap I is open so as to allow any wind that
enters through the perforations in the top of the cap to escape and thus prevent
same from entering the lamp to extinguish the flame. L is a metal tube fitted
over the perforations in the cap I to act as a wind guard to prevent wind from
entering the lamp. A wire hoop is fitted to the outside of the said tube or wind
guard L for carrying the lamp and is made to swivel. M is a row of perforations
made in the lower part of the lamp case just above the glass to allow air to enter
the lamp case to support combustion of the flame. The lower brass ring N fixed
on the outside of the lamp case is perforated all round the top with holes of
suitable size to break any suction or force pressure from acting on the flame by the
opening or closing of the carriage door when the lamp is burning in the carriage..
Figure 3 is an outward view of our improved lamp shewing the perforations M
made through the sides of the lamp case.
"
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is "
1. The combination and arrangement of parts A. BB. C. D. E. F. G. which forms
a portable lamp substantially as shewn and described at Figure 1 of the accom-
panying drawings.
2: The combination and arrangement of parts H. I. J. K. L. M. N. substantially
as shewn and described at Figures 2 and 3 of the accompanying drawings so as to
form a lamp case for holding the portable lamp as shewn and described by letters
of reference at Figure 1 of the accompanying drawings.
Dated this 25th dow of Norember 1OOK