Improvements in Bunker and other Lamps.
Year: 1889

page_text: Date of Application, 15th Aug., 1889
Complete Specification Left, 25th Apr., 1890--Accepted, 31st May, 1890
PROVISIONAL SPECIFICATION.
Improvements in Bunker and other Lamps.
I SAMUEL ALBERT JOHNSON of 13 East India Road, Poplar East, in the County
of Middlesex, Engineer, do hereby declare the nature of this invention to be as
follows:-
The invention has for its object a novel construction of bunker and other lamps
whereby whilst a sufficient supply of oil is maintained to the wick, the bulk of oil in
the body of the lamp is separated from the wick feeding chamber to which it is
supplied in proportion as it is consumed.
For this purpose I form the body of the lamp with an internal division or false
bottom forming a close oil chamber above the same except that a filling tube
connects the said division or false bottom with a recessed portion of the. real
bottom.
This filling tube is fitted with a screw plug or other stopper at its lower end and it
has an opening in the side thereof to enable it to communicate with the space between
the false and real bottoms; a fine air tube communicates with the latter space to
enable the oil to flow from the upper to the lower chamber when the oil in the latter
falls below the opening in the side of the filling tube.
The wick tube or spout communicates directly with the lower oil chamber.
By this construction of lamp when it is desired to supply the same with oil the
lamp is reversed, the stopper removed from the filling tube and the required supply
of oil is poured into the same, the stopper is replaced and the lamp turned over into
position for use, the lower chamber receives its supply from the upper and the level
in the former is maintained up to the opening in the side of the supply tube until all
the oil from the upper chamber is exhausted. The lamp is provided with a handle
and a suspension hook if required.
Dated Anoust 15th 1980
COMPLETE SPECIFICATION.
Improvements in Bunker and other Lamps.
1, SAMUEL ALBERT JOHNSON, of 13 East India Road, Poplar, East, in the County
of Middlesex, Engineer, 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 invention has for its object a novel construction of bunker and other lamps
whereby whilst a sufficient supply of oil is maintained to the wick, the bulk of oil in
the body of the lamp is separated from the wick feeding chamber to which it is
supplied in proportion as it is consumed.
For this purpose I form the body of the lamp with an internal division or false
bottom forming a close oil chamber above the same except that a filling tube
connects the said division or false bottom with a recessed portion of the real
bottom.
This filling tube is fitted with a screw plug or other stopper at its lower end and it
has an opening in the side thereof to enable it to communicate with the space between
the false and real bottoms; a fine air tube communicates with the latter space to
enable the oil to flow from the upper to the lower chamber when the oil in the latter
falls below the opening in the side of the filling tube.

page_text: The wick tube or spout communicates directly with the lower oil chamber.
And in order that my said invention may be more clearly understood and readily
carried into effect I will proceed aided by the accompanying drawings more fully to
describe the same.
Figure 1. is a side elevation and Figure 2 is a vertical section of a bunker lamp
with my invention applied thereto.
According to my invention I form the body a of the lamp with an internal division
or false bottom 6 forming a close oil chamber c above the same except that a filling
tube d connects the said division or false bottom b with a recessed portion e¹ of the
real bottom e. This filling tube d is fitted with a screw plug for other stopper at
its lower end and it has an opening d¹ in the side thereof to enable it to communicate
with the space g between the false bottom b and the real bottom e a fine air tube h
soldered to the outside of the lamp communicates with the latter space to enable the
oil to flow from the upper chamber c to the lower chamber g when the oil in the latter
falls below the opening d¹ in the side of the filling tube d. The wick tube or spout i
communicates directly with the lower oil chamber g.
The lamp is provided with a handle jas usual and may also be provided with the
usual suspension hook. The stopper f is preferably connected to the lamp by a short
chain in order to prevent loss of the saine.
By the above described construction of lamp, when it is desired to supply the same
with oil, the lamp is reversed, the stopper f is removed from the filling tube d, the
required supply of oil is poured into the same, the stopper is replaced and the lamp
turned over into position for use, the lower chamber g receives its supply from the
upper chamber c and the level in the former is maintained up to the opening d
in the side of the supply tube d until all the oil from the upper chamber c is
exhausted.
I would here remark that my invention is applicable to lamps of other forms and
descriptions than that shown in the drawing.
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 bunker and other lamps, a lamp body, divided by means of a false bottom into
an upper oil chamber and a lower chamber supplying oil to the wick tube, an oil
supply tube connecting the false bottom with the real bottom and communicating
with the upper oil chamber a stopper for opening and closing such oil supply tube,
an opening in the side of such tube and a fine air tube both communicating with
the lower oil chamber substantially as herein shown and described and for the purpose
stated.
Doted AKIL 1800
аки 1000
Apri
S. A. JOHNSON.
By Harris & Mills,
23, Southampton Buildings, London, Agents.