An Improved Safety Candle Lamp for use in Subways, Ships' Holds, and similar places.
Year: 1892

page_text: Date of Application, 30th Apr., 1892
Complete Specification Left, 24th Jan., 1893—Accepted, 11th Mar., 1893
PROVISIONAL SPECIFICATION.
An Improved Safety Candle Lamp for use in Subways, Ships' Holds,
and similar places.
I EDWIN WILLIAM MOUNTAIN of No. 22 Chalton Street Euston Road in the
County of London, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in candle lamps and is designed to show
more light than the lamps at present in use for the same purposes.
My invention consists in making the lamp a cylindrical shape, instead of
rectangular, as at present, the cylinder portion being made of glass, and having a
moveable reflector on the outside, so that the light is diffused all round excepting
where the reflector is, I provide holes in the top and bottom frames for ventilation,
and supply of up and down draught, the flame being protected by four copper
gauzes, two for the top frame, and two for the bottom frame, thus making the
lamp wind proof.
I likewise load the base or bottom frame so as to prevent the lamp being easily
upset.
The lamps at present in use for subways and confined places are made with two
sides of glass, a lens in front, and a reflector at back, or with three sides of glass
and a reflector at back, or with two lenses, and a reflector, in all these lamps the
reflector is fixed, but in my invention the reflector is moveable at pleasure, the
flame being surrounded by a glass cylinder, a more diffused light is obtained ;
the lamp is wind proof, perfectly ventilated, and perfectly safe.
Dated this 30th day of April 1892.
EDWIN WILLIAM MOUNTAIN.
COMPLETE SPECIFICATION.
An Improved Safety Candle Lamp for use in Subways, Ships' Holds,
and similar places.
I, EDWIN WILLIAM MOUNTAIN of No. 22 Chalton Street, Euston Road in the
County of London, Subway Inspector, 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:-
My invention relates to improvements in safety lamps as used in subways sewers
ships holds and similar places where explosive gases and vapours are likely to
accumulate, and has for it's object a method and means whereby more light is
shown than with the lamps at present in use.
In order that my invention and the manner of operating the same may be
the better understood I have appended the accompanying sheet of drawings in
which:-
Fig. 1. is an elevation of a lamp provided with the improvements constituting the
subject matter of my invention.
Fig. 2. is a plan view of Fig. 1 with the top removed.
My invention consists in making the lamp a cylindrical shape, instead of
rectangular as at present, I provide a cylinder of glass A, surrounding the flame B
and having a reflector C, which can be moved up or down the guide bars D, D',
and which when required can be removed altogether from the lamp by springing it
off the bars D, D', and thus the flame will diffuse the light all round.
I provide holes E, in the top frame F, and holes G in the bottom frame H, for

page_text: ventilation and supply of up and down draught, the flame being protected by four
copper gauzes, two J, and K, for the top frame F, and two L, & M for the bottom
frame H, thus making the lamp windproof.
I likewise when necessary load the bottom frame H, so as to prevent the lamp
being upset easily.
Although in the accompanying sheet of drawings I have shewn a candle P, as
the illuminating power, I do not confine myself to this method, but may use oil or
other illuminating power, with the same arrangement of lamp as described.
I also provide a hook S, for hanging purposes.
In all the lamps at present in use for the afore mentioned purposes, the reflector
is fixed and the frame surrounding the flame is rectangular.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed I declare that what I
claim is :-
In an improved safety lamp the use and application of a glass cylinder A,
surrounding the flame B in conjunction with a removeable reflector C. substantially
as and for the purposes herein described and shewn by the drawings hereunto
appended.
Dated this 24th day of January 1893.