Improvement in the Manufacture of Lamps for Burning Volatile and other Oils.
Year: 1891

page_text: Date of Application, 29th Dec., 1891
Complete Specification Left, 28th Oct., 1892-Accepted, 3rd Dec., 1892
PROVISIONAL SPECIFICATION.
Improvement in the Manufacture of Lamps for Burning Volatile
and other Oils.
FRANCIS ROBERT BAKER Mechanical Engineer 242 Pershore Road Birmingham
WILLIAM MARSH Electro Plate Turner 40 St. Pauls Square Birmingham do
hereby declare the nature of this invention to be as follows:
In order to do this, we make first a chamber to hold air (in a compressed form)
to which we attatch independently, an air injector, for the purpose of compressing the
said air.
In connection with this air chamber, we make now another chamber, holding
the oil, & above this chamber we have a third, to receive the overflow, of the same
capacity as the oil chamber. The air when compressed, now passes from the air
chamber, & is so connected, that it presses on the fluid chamber. We have a pipe
open at its base, & running up the desired height of the lamp, & terminating in the
wick chamber. To the top of this pipe, we fix a taper plug valve, working in
connection with a circular, or other shaped float, which is placed in the wick
chamber.
This float rising, & falling, according to the amount of fluid contained in the said
wick chamber. This then, acts as a regulator to the fluid, & we fix a screw down
seat or valve, in the top of the fluid chamber for the purpose of filling by.
The action is as follows:
On charging the air chamber, with compressed air, by means of the injector, the
said air, drives the oil up to the wick chamber, & fills the same, & is checked by
means of the aforesaid taper valve, being closed by the action of the float.
On however the oil being drawn out, by the capilliary attraction of the wicks,
the float falls, & allows the oil to again rise to the proper level, when the action is
repeated.
We fill the oil chamber, by pouring oil into the overflow reservoir, & allowing it
to descend through the screwdown valve, before described, which is screwed up
tightly, & closed, on the chamber being filled.
The object of our invention therefore is to make a lamp of the above construction,
& principle, so that the oil is fed up close to the burner by a perpetual supply or
stream, from the base, & large reservoirs or containers (as now generally used) can
be dispensed with, & the oil is always stored in the base or foot of the lamp, keeping
the bulk of it therefore, as far as possible from the light, & thereby minimising the
danger of heating, also by this method, new shapes can be introduced, & one or
more lights can be fed from the same base, up to any given height.
D December 23rd 1891.
FRANCIS ROBERT BAKEK,
WILLIAM MARSH.
COMPLETE SPECIFICATION.
Improvement in the Manufacture of Lamps for Burning Volatile
and other Oils.
FRANCIS ROBERT BAKER Mechanical Engineer 2 Wellington Road Harborne,
Birmingham WILLIAM MARSH Electro Plate Turner 40 St. Pauls Square
Birmingham, do hereby declare the nature of this invention and in what manner

page_text: the same is to be performed, to be particularly described and ascertained in
and by the following statement :-
The object of our invention, is to avoid the use of a large reservoir, or container,
of oil in imediate proximity to the burner, and thus minimizing dangers, from
explosion, or upsetting.
The construction, and principle of our invention is such, that the reservoir, or
container, is at the base of the lamp, and the great bulk of the oil is consequently,
at the greatest distance from the burner. The oil is forced by compressed air, up
a feed pipe, into the small wick chamber at the top of the lamp, the supply of oil
being so regulated, as to meet the consumption, when the lamp is burning, and
provision is duly made for the return to the base of the lamp of any oil forced up in
excess of that, for the time being used, limiting the volume of oil, close to the
burner, strictly to the contents of the small wick chamber.
с
The principle and method of working will be more easily understood, by a
reference to the drawing, which shows a section of a lamp embodying our invention.
The portions marked a form the outer shell of the lamp 6 being the base, and c the
top, we now construct the oil reservoir, or container d and above the reservoir d we
construct a compressed air chamber E, and above the air chamber E we construct
the overflow chamber f. We now construct the feed pipe, or supply tube G, which
is provided with an inverted funnel at its base the said funnel being provided with
gauze to prevent the passage of grit, or dirt, with the oil up the feed pipe G. In
the lower portion of the feed pipe G, we insert a piece of metal wire of a desired
length, represented by the black vertical bar marked H, and at the top of the feed
pipe, we insert another piece of metal wire of a desired length, the end of which
protrudes, beyond the feed pipe, and is turned over at a right angle therewith, for
the purpose of moving the same, for cleaning, & represented by the black bar
marked I. These two pieces of wire fit almost tightly in the feed pipe, and their object,
is to check & regulate, the flow of the oil up the feed pipe, from the oil reservoir d
to the wick chamber J. From the oil reservoir d, we construct the syphon K
which prevents the oil flowing into the air chamber, and connects the oil chamber d
with the compressed air chamber E. From the outer shell a, at the point L we
construct an air supply tube which is connected with the compressed air chamber E
as shewn, and to this air supply tube, we affix diagonaly a seat, and an arm is cast
on which carries a screw working in a packed gland.
The point of the screw, when screwed down, fitting tightly in the seat, making the
air supply tube air tight, the said seat and screw being marked M, we now construct,
an oil supply tube, from the outer shell a, at the point marked N which is connected
with the oil reservoir d, as shewn and at the point marked N we construct a
seat and screw marked O, similar in character to the seat & screw marked M, &
previously described, and from the seat and screw O to the overflow chamber f
we construct a tube P. At the top of the overflow chamber f we construct an air
pipe g. which passes from the overflow chamber f, through the wick chamber J, to
the outer shell a. at the top, where the said air pipe is open to the atmosphere. The
wick chamber J is provided with a piece of tube marked R which is less in length
than the wick chamber J, & through the tube R, the feed pipe G passes with
freedom. The tube R being of less length than the wick chamber J, causes the
oil in the wick chamber J to overflow at this point. S is a metallic spreader.
The mode of working our invention, is as follows, open air supply tube, to
compressed air chamber E, by unscrewing screw M, then open oil supply tube, by
unscrewing screw O, pour in oil to the required quantity, then screw down tightly
screw O. At the point L apply an air pump, to the air supply tube, & give the
requisite number of strokes, and then screw down tightly the screw M. The lamp
is then ready for use, for the compressed air is passing up the syphon K, and
pressing down upon the oil at the top of the reservoir d, and forcing the oil up the
feed pipe G. Should the lamp not be in use, or whilst in use, should it not consume
all the oil thrown up, the surplus oil will flow down the tube R in the wick

page_text: chamber J into the overflow chamber and on the screw being removed, to refill
oil reservoir d, the oil will pass down the tube P, from the overflow chamber finto
the oil reservoir d.
Having now particularly described, & ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is.
(First.) The supply of oil to the burner, from a reservoir, or container, at the
base of the lamp by means of air compressed, by an injector, or air pump.
(Second.) The use of two or more pieces of wire in the feed pipe, for regulating,
or checking the flow of oil.
(Thirdly.) The use of a syphon air pipe, in combination with the lamp, for the
purpose of preventing the oil, getting into the air chamber.
(Fourthly.) This special screw & seat, forming an air tight top, in combination
with the lamp.
1000
FRANCIS ROBERT BAKER.
WILLIAM MARSH.