Improvements in. Lamps for Signalling and other Purposes, Burning Petroleum and other similar Oils.
Year: 1889

page_text: Date of Application, 29th Oct., 1889
Complete Specification Left, 8th May, 1890-Accepted, 14th June, 1890
PROVISIONAL SPECIFICATION.
Improvements in. Lamps for Signalling and other Purposes, Burning
Petroleum and other similar Oils.
I, HENRY CHAPMAN, of 69 Victoria Street, Westminster, London, in the County
of Middlesex, Engineer, do hereby declare the nature of the said invention, a
communication from Henri Vaslin, 10 Rue Laffitte, Paris, France, to be as
follows:-
The invention relates to a lamp or burner without a chimney, and for use as a
hand or other lamp for signalling and other purposes to burn petroleum or other
similar oils.
The object of the invention is to overcome the defects in ordinary lamps for similar
purposes, which are liable to go out when oscillated to and fro quickly, and when
overturned, or placed in any, but the erect position, the oil is liable to escape through
the socket and thus flood and extinguish the light, or cause accidents by igniting
combustible matter that may happen to be within its range, the invention communi-
cated to me being a remedy for the above named defects.
The invention consists of an improved combination and arrangement of parts.
The oil reservoir is square or of any other desired form and the two ends (which will
be termed the top and bottom of the reservoir) are closed.
In the centre between the top and bottom of the reservoir there is a tube secured
to the top end fluid tight, but the tube is open at the top end and forms a well" for
the wick.
"
Around the well tube for the wick and within the reservoir there is a sheath of
felt or other suitable fibrous material, and there are one or more small holes in the
sides of the well so that the oil from the reservoir can slowly filter through the felt,
and the small hole or holes into the sides of the well and supply the wick therein
with oil as fast as it is consumed.
Above the top end of the reservoir, a dome or other shaped chamber, is formed
fluid tight, except as hereinafter explained, in which there is a part through which
the burner for the wick can be inserted and secured, a tube descending from the
said part extending to within a short distance from the top of the oil reservoir.
There is a small hole or tube near the burner as in ordinary lamps which will allow
air to pass into and out of the said chamber.
Within the reservoir and under the top end a closed V channel is formed, the legs
of the V extending across the top, one end of which channel is open to the oil
reservoir and the other to the chamber above it; the object of which is to allow air
to enter into, or escape from the reservoir when oil is being supplied to it through
a hole closed by a screw plug or other suitable means when the reservoir is full.
This arrangement of V channel while allowing the escape or admission of air
prevents the escape of oil from the reservoir, even when the lamp is placed in other
than the upright position and if any small quantity of oil does escape it enters
the chamber above the reservoir and passes to the "well" when the lamp is
upright.
There is or may be a lid which may be hinged to one side of the reservoir
and when down in its position it comes over the upper chamber of the lamp, but
leaves a space for air to circulate between it and the top of the chamber to keep
the chamber and oil reservoir cool.
With lamps arranged as described, oil in the well for the wick when upset will
only fill a small part of the chamber above the top of the oil reservoir and thus
cannot flood the wick even when the lamp is turned upside down, as in that position
the oil will not fill the chamber to the depth of the length of the tube through which

page_text: the burner is introduced and therefore the wick is prevented from being flooded with
oil in whatever position the lamp may be placed or thrown by accident, if it is not
allowed to remain in an upset position for more than a few minutes.
The sides (say four sides) of the lamp when used for signalling purposes are
formed of glass of two or more different colours and the flat way of the wick is
so placed in relation to the planes of the four sides of the lamp as to present an
equal surface of flame to each side, the flat side of the flame 'being at an angle of
45 degrees to the plane of each face of the four sided square lamp.
Dated this Twenty-eighth day of October 1889.
PETER J. LIVSEY,
Agent.
COMPLETE SPECIFICATION.
Improvements in Lamps for Signalling and other Purposes, Burning
Petroleum and other similar Oils.
I, HENRY CHAPMAN, of 69 Victoria Street, Westminster, London, in the County
of Middlesex, Engineer, do hereby declare the nature of this invention, a commu-
nication from Henri Vaslin, 10 Rue Laffite, Paris, France and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement :-
The invention relates to a lamp or burner without a chimney and for use as a
hand or other lamp. for signalling and other purposes to burn petroleum or other
similar oils.
The object of the invention is to overcome the defects in ordinary lamps for
similar purposes, which are liable to go out when oscillated to and fro quickly, or
when overturned, or placed in any, but the erect position, the oil is liable to
escape through the socket and thus flood and extinguish the light, or cause
accidents by igniting combustible matter, that may happen to be within its
range, the invention communicated to me being a remedy for the above named
defects.
Fig. 1 is a vertical section, and fig. 2 is a plan section on the line A-B fig. 1.
The invention consists of an improved combination aud arrangement of parts.
The oil reservoir
is square or of any other desired form (it is shown circular in
the illustration) and the two ends a¹, and a², (which will be termed the top (a) and
bottom (a) of the reservoir) are closed.
a,
In the centre between the top and bottom of the reservoir there is a tube b,
secured to the top end a¹, fluid tight, but the tube b, is open at the top end and
forms a "well" for the wick.
Around the well tube b, for the wick and within the reservoir a, there is a sheath
of felt or other suitable fibrous material 6, and there are one or more (say four)
small holes 2, in the sides of the well b, so that the oil from the reservoir can
slowly filter through the felt 61, and the small hole or holes 63, in the sides of the
well b, and supply the wick therein with oil as fast as it is consumed.
Above the top end a¹, of the reservoir a dome or other shaped chamber c, is
formed fluid tight, except as hereinafter explained, in which there is a part through
which the burner for the wick can be inserted and secured, the burner shown in
fig. 1 is what is known as a "Barton burner," but any other suitable burner may be
used, there is a tube d, descending from the said part c, extending to within a short
distance from the top of the oil reservoir.
There is a small hole or tube e, near the burner f, as in ordinary lamps, which will
allow air to pass into and out of the said chamber c.
Within the reservoir a, and under the top end a¹, a closed V or other shaped
channel g, is formed, the legs of the V extending across the top end a¹, one end (*)
of which channel
open to the oil reservoir a, and the other to the chamber c; above
it through a hole g¹, the object of which is to allow air to enter into as the oil is
consumed, and escape from the reservoir when oil is being supplied to it, through a

page_text: hole baving a tube h, closed by a screw plug h', or other suitable means, when the
reservoir is full. 2, is wire gauze at the lower end of the tube h.
This arrangement of V channel g, while allowing the escape or admission of air
prevents the escape of oil from the reservoir even when the lamp is placed in other
than the upright position and if any small quantity of oil does escape it enters
the chamber c, above the reservoir a, and passes to the well b, when the lamp is
upright.
C,
There is or may be a lid or cover i, which may be hinged to one side of the
reservoir a, and when down in its position it comes over the upper chamber of
the lamp, but leaves a space i, for air to circulate between it and the top of the
chamber to keep the chamber and oil reservoir cool.
With lamps arranged as described, oil in the well b, for the wick, when upset, will
only fill a small part of the chamber c, above the top of the oil reservoir a', and
thus cannot flood the wick even when the lamp is turned upside down, as in that
position the oil will not fill the chamber c, to the depth of the length of the
tube d, through which the wick from the burner f, is introduced and therefore the
wick is prevented from being flooded with oil in whatever position the lamp may be
placed or thrown by accident, if it is not allowed to remain in an upset position for
more than a short time. The part 1, fig. 2 is for the purpose of entering a recess in
the lantern to keep the lamp in position therein..
The sides (say four sides) of the lamp when used for signalling purposes, are
formed of glass of two or more different colours, and the flat way of the wick is so
placed in relation to the planes of the four sides of the lamp, as to present an
equal surface of flame to each side, the flat side of the flame being at an angle
of 45 degrees to the plane of each face of the four sided square lamp.
The dotted lines j, in fig. 2 represent the four sides or glass faces of the lamp,
the flat side of the flame of the lamp being in the line k-k fig. 2.
Having now particularly described and ascertained the nature of the said inven-
tion communicated to me, and in what manner the same is to be performed, I
declare that what I claim is.
1. The combination of the oil chamber (a) the wick well (b) air channel (g)
chamber (c) and tube (d), substantially as and for the purpose hereinbeforo
described and illustrated by the drawings.
2. The combination and arrangement of parts as and for the purpose hereinbefore
described and illustrated by the drawings.
Dated this Seventh day of May 1890.
PETER J. LIVSEY,
Agent.