An Improved Paraffin Oil Lamp.
Year: 1891

page_text: Date of Application, 5th June, 1891
Complete Specification Left, 5th Mar., 1892-Accepted, 7th May, 1802
PROVISIONAL SPECIFICATION.
An Improved Paraffin Oil Lamp.
I JAMES WATSON JOHNS Solicitor, Court of Session Edinburgh and residing
at Hermitage Hill House Seafield Leith, do hereby declare the nature of this
invention to be as follows:-
The object of this invention is to remove the danger of explosion to economise
the oil, and to diffuse the light without the shadow caused by the intervention of the
oil vessel in the ordinary form of lamps around and beneath the base of the lamp.
It is constructed as follows, instead of the ordinary oil vessel in which the wick
is submerged the oil in this invention is contained in a ring shaped vessel or hollow
circle surrounding the burner, this vessel is supported on brackets which are fixed
to the stem of the lamp, at any required distance below the ring or circular oil
vessel, this stem or support of the oil vessel is hollow, and into this hollow stem
the wick is placed, one or more of the brackets supporting the hollow ring or oil
vessel is a tube connecting the oil vessel with the lower end of the hollow stem
which contains the wick, this bracket is fitted with a cran or tap for regulating the
fall of the oil from the oil vessel, above, into the lower end of the stem which
supports it and carries the wick, the diameter of the stem need not exceed much
the diameter or width of the wick; the stem or tube containing the wick terminates
above the centre of the circle containing the oil, and is fitted with a burner of any
suitable kind, this is the form of the lamp when used as a table lamp, but when
desired it may be used as a suspended lamp as follows:-the stem being divided
into two parts the upper part being hollow as aforesaid is attached to the remainder
by a screw and may be detached, and the circle containing the oil being fitted with
rings, chains may be hooked on and the lamp suspended, the circle oil vessel may
be filled in the usual way, with a screw hatch.
Edinburgh June 2nd 1891
J. WATSON JOHNS.
COMPLETE SPECIFICATION.
An Improved Paraffin Oil Lamp.
I JAMES WATSON JOHNS, Solicitor, residing at Hermitage Hill House,
Hermitage Hill, Restalrig Road, Leith, 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 :-
The object of this invention is to remove the danger of explosion, to economise
the oil, and to diffuse the light without the shadow caused by the intervention of
the oil vessel in the ordinary form of lamps around and beneath the base of the
lamp. It is constructed as follows instead of the ordinary oil vessel in which the
wick is submerged, the oil in this invention is contained in a ring shaped vessel or
hollow circle surrounding the burner, this vessel is supported on brackets which
are fixed to the stem of the lamp at any required distance below the ring or circular
oil vessel, this stem or support of the oil vessel is hollow, and into this hollow stem
the wick is placed. One or more of the brackets supporting the hollow ring or
oil vessel is a tube connecting the oil vessel with the lower end of the hollow stem
which contains the wick, this bracket is fitted with a cran or tap for regulating the
fall of the oil from the oil vessel above into the lower end of the stem which
supports it and carries the wick. The tap may be set either in the bracket or in
the ring or oil vessel, when set in the ring the tap consists of a conical plunger

page_text: upon a spindle attached to the hatch which closes the ring after charging it with
oil, the spindle passing through the plunger or plug enters the bracket and forms
a guide, so that when the rings is charged with oil the act of closing the hatch
which is by a screw, the plunger is pressed down by the action of the screw into
the orifice of the bracket which supplies the stem, thereby shutting off all con-
nection between the ring or oil vessel and the stem, until such time as the
consumption of the oil admitted to the stem necessitates the relaxation of the
screw hatch and consequent raising of the plunger in order that a further supply
of oil may be admitted to the stem. The diameter of the stem need not exceed
much the diameter or width of the wick the stem or tube containing the wick
terminates above the centre of the circle containing the oil and is fitted with a
burner of any suitable kind, this is the form of the lamp when used as a table
lamp, but when desired it may be used as a suspended lamp as follows. The stem
being divided into two parts the upper part being hollow as aforesaid is attached
to the remainder by a screw and may be detached and the circle containing the oil
being fitted with rings, or hooks chains may be hooked on and the lamp suspended
the circle oil vessel may be fitted in the usual way with a screw hatch.
Figure I shows the lamp with stand detached, and chains attached to hooks on
the circular oil vessel when used as a hanging lamp.
Figure II shows the lamp with chains detached, and stand attached when used
as a standing or table lamp. A is the tap.
Figure III is a plan of lamp, showing oil ring R. brackets B. B. B. and hooks
for suspension H H H.
Figure IV is a section of the lamp showing position of plunger tap marked T
resting upon the orifice of the supply pipe or bracket B.
Figure V is an elevation of the famp showing hooks H H and hatch tap marked T
oil ring R, bracket B, which supplies stem S.
Figure VI is a sectional view of the oil ring or vessel with the hatch and plunger
tap attached H H is the hatch with the spindle S. attached, C is the collar upon
the oil ring R in which the hatch H H is seated and operated by a screw, by
which the plunger P is raised or depressed, P is the plunger through which the
spindle S. S. passes and is fixed. O is the orifice of the bracket B which is closed
by the plunger P. R is a section of the oil vessel or ring.
Having now particularly described and ascertained the nature of my inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is the construction of an oil lamp with the following peculiarities--
1. The separation of the oil supply from the wick, and the seat of combustion.
II. The utilisation of an annular oil vessel or hollow circle communicating with
the wick by hollow brackets, let into a stem passing upwards into the axis or centre
of the circle or oil vessel.
III. The preservation of the oil supply at a constant and invariable level, at the
point of combustion in the wick, thereby preventing the carbonising of the wick
and the necessity of frequent trimming.
IV. The utilisation of a plunger or vertical tap, or valve, or an ordinary cran
for cutting off the connection between the oil in combustion or use, and the supply
of oil in the said ring or circular oil vessel thereby avoiding the danger of an
explosion, and waste of oil by evaporation.
The contents of the stem carrying the wick being insufficient in quantity and in
such a position as to be harmless.
Fainhurch Maval 4th 1800
J. WATSON JOHNS.