An Improved Oil Lamp.
Year: 1895

page_text: Date of Application, 10th Dec., 1895
Complete Specification Left, 10th Sept., 1896-Accepted, 21st Nov., 1896
An Improved Oil Lamp.
We, JAMES DEERING and STEPHEN DEERING, both of Mary Lane, Darfield, near
Barnsley, Yorkshire, Miners, do hereby declare the nature of this invention to be
as follows:-
This invention relates to an improved safety oil lamp, and has for its object to
provide a simple arrangement which will effectually prevent any danger of fire,
should the lamp be upset.
In carrying out our invention, we propose to make the lamp with two chambers
of any suitable shape and size, the upper one being filled with oil through a cap
furnished with an air hole. The burner is fitted to the top of this chamber and a
tube or casing extends from the burner to the bottom of the chamber forming an
annular space in which the oil is contained. The reservoir can only communicate
with the lower oil chamber by means of a small tube and this chamber is preferably
of a smaller size than the reservoir. Within an inner casing and extending from the
burner close to the bottom of the lower chamber a tube or sheath projects carrying
the wick, which is thus preserved from contact with the oil except at the lower end
which lies upon the bottom of the chamber. The oil is supplied through the small
tube to the lower chamber there reaching the wick and passing up through the
complete length of the wick.
Dated this 9th day of December 1895.
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicants.
An Improved Oil Lamp.
We, JAMES DEERING and STEPHEN DEERING, both of Mary Lane, Darfield, near
Barnsley, Yorkshire, Miners, do hereby declare the nature of our said invention
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :-
This invention relates to an improved safety oil lamp and has for its object to
provide a simple arrangement which will effectually prevent any danger of fire,
should the lamp be upset.
In carrying out our invention we provide the lamp with two chambers of any
suitable shape and size the upper one being filled with oil through a suitable hole
covered by a cap furnished with an air hole. The burner is fitted to the top of this
upper chamber and a tube or casing extends from the burner through the bottom
of the said chamber forming an annular space in which the oil is contained.
This upper chamber or reservoir communicates with the lower one by means of
a small tube or by perforations.
The wick passes through a sheath or case of metal extending from the lower part
of the burner and of sufficient length to reach almost to the bottom of the lamp.
In order that the invention may be more clearly understood reference is had to

page_text: the accompanying sheet of drawings in which Fig. 1 shows a vertical section through
the lamp and Fig. 2 shows a horizontal section through the upper chamber.
The lamp is formed with the reservoir A. connected to the lower chamber B by
means of the short connecting tube C.
The reservoir A is formed with a hole, covered by a cap a through which the
lamp is filled. This cap is provided with a hollow conical extension a¹ having a
small hole or perforation a3 at the apex, and a perforation is also formed through
the
сар, to allow any vapour to pass off.
A tube D extends from the opening a³ into which the screwthreaded portion
of burner E is inserted, and passes centrally through the reservoir and connecting
tube, and projects into the lower chamber.
The tube D, passing centrally through the reservoir, forms an annular chamber
of the latter, and a perforation or small tube c is provided allowing the oil to pass
through the connecting tube C into the lower chamber. The perforation is of such
a size as to permit the oil to drip slowly into the chamber so that the wick is
constantly supplied without the chamber being filled with oil.
A sheath or case F of metal is provided extending from the lower portion of the
burner and passing through the tube D almost to the bottom of the lamp. This
sheath contains the wick f and the latter only communicates with the oil at the
lower end of the tube F, the end of the wick lying upon the bottom of the lamp.
The oil therefore has to pass through the whole length of the wick before it
reaches the burner and there being only a very small quantity of oil in the lower
chamber there is no danger of its passing to the flame on the lamp being upset.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. In an improved oil lamp, the tube extending from the opening at the top
through the reservoir and connecting tube, into the lower chamber and the sheath
or case containing the wick passing through the central tube almost to the bottom
of the lamp, substantially as described and for the purposes specified.
2. The reservoir and the lower chamber connected by the short connecting tube
and the perforation or small tube forming a means of communication, for the oil,
between the two chambers, substantially as described and for the purposes specified.
3. The combination of the conical perforated cap and the reservoir and the
perforation or tube connecting the said reservoir to the lower chamber of the sheath
or case connected to the burner, substantially as described and for the purposes
specified.
Dated this 10th day of September 1896.