Year: 1887

page_text: Date of Application, 28th May, 1887
Complete Left, 27th Feb., 1888
Complete Accepted, 20th Apr., 1888
We WOLF DEFRIES, of No. 4 Cleveland Gardens, Gentleman, and VICTOR ISIDORE
FEENY, Consulting Engineer, of No. 7 Queen Victoria Street, both in the County of
Middlesex, do hereby declare the nature of this invention to be as follows :—
This Invention relates to a method of feeding oil to lighting or heating apparatus
automatically, accordingly as the oil is consumed, and it consists in connecting a
reservoir (which may be at any distance above the burner) by means of a tube
forming syphon in or near the reservoir, with an air chamber or vessel in commu-
nication with a container into which the wick dips, the whole operating as wo will
now explain:
:-
In charging the apparatus, the oil will pass down from the reservoir through the
syphon and supply pipe to the air chamber or vessel and thence to the container (the
air passing out through the burner), until it rises to the bottom of the air chamber
or vessel, whereupon the air within this chamber or vessel becoming sealed or trapped
is forced up through the supply pipe to the syphon. Here the pressure of the
escaping air acting upon the surface of the oil in the syphon at once stops all further
flow from the reservoir.
As soon as the level of the oil within the container shall have fallen (owing to the
combustion), the pressure within the air chamber, or vessel, and supply pipe becomes
lessened and oil again flows until the equilibrium is reestablished, and so on.
Dated this Twents eighth day of Mo 1887

page_text: Improvements in Feeding Oil for Lighting and Heating.
We WOLF DEFRIES of No. 4 Cleveland Gardens, Gentleman, and VICTOR ISIDORE
FEENY Consulting Engineer, of No. 7 Queen Victoria Street, both in the County of
Middlesex 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 :-
Our Invention relates to a method of feeding oil to lighting or heating apparatus
automatically, according as the oil is consumed, and it consists in permitting the flow
of oil to generate in the burner case a head the pressure of which operating upon the
air of a chamber intermediate between the reservoir and the burner. equilibrates the
pressure due to the head of oil in the reservoir.
On the accompanying Sheet of Drawing
Figure 1 represents a vertical section through a lamp embodying a form of our
Invention as described in our provisional Specification.
Figures 2, 3 and 4 being similar views showing modifications of same.
It will be seen that the reservoir A. Fig. 2 and the burner G are in communication
by the pipe C, the upper end of which enters the dome B. At about the level of the
bottom of the reservoir the pipe C is perforated with a hole E of smaller area than
that of the pipe C, and the dome B has at El one or more holes or inlets giving an
opening of about the same area as that of the hole E.
In the drawing the lower part H of the pipe C ends against a plato J which
terminates the oil and air chamber formed by the pipe C. The plate J is perforated
at K in order to permit the passage of oil.
The working is as follows:-
Oil is poured through the feeder screw a into the reservoir A, whence it passes by
-the opening E¹ into the dome B rising therein to the hole E through which it enters
the pipe C down which it flows entering the wick case F through the orifice K. The
air in the pipe displaced by the entering oil issues by the orifice K-until the level of
the oil is above this orifice.
A compression of air then begins in the pipe C,
exercising a pressure upon the surface of the oil in the dome B. When the level of
the oil in the wick case has risen above the level of the oil in the lower part H of
the pipe C, to a height equal to that of the oil in the reservoir above the hole E, the
compression due to this head of oil in the wick case will exercise upon the surface of
the oil in the dome B a pressure equal to that due to the column of oil in the reservoir
which caused the flow, and the oil will accordingly cease to flow.
When the height
of the oil in the wick case is reduced by combustion, the feeding will recommence
and the flow will continue until the required level is reproduced in the wick case.
We may substitute in lieu of the arrangement with dome, a small bucket fixed
on the underside of the reservoir, with which it communicates by a small tube
proceeding from the bottom of the reservoir and extending nearly to the bottom of
the bucket, see fig. 3.

page_text: The upper portion of the bucket B is furnished with a hole E and the whole is
enclosed in a cup fixed outside the bucket on to the underside of the reservoir A,
from the lower end of which cup extends the supply pipe C-leading to the wick
case F.
Instead of the siphon arrangement with dome (Fig. 2) or bucket (Fig. 3) for con--
trolling the supply of oil from the reservoir we may use a bent siphon the inlet of
which is of lesser area than its outlet and shown on Fig. 1. We may also employ an
independent air and oil chamber instead of using the supply pipe C for that
purpose, in which case the air chamber will be placed at a suitable level below the
reservoir with which, as with the burner case, it will communicate through the supply
pipe C.
The supply pipe or the independent air chamber, may lead to an oil chamber inter-
mediate between the reservoir and the burner, furnished with a similar dome, siphon,
or equivalent device for transmitting the oil; the operation of the whole being
controlled in the same manner as in the simpler form.
The dome B (Fig. 2) bucket B (Fig. 3) chamber B (Fig. 4) and the shorter leg of
the siphon B (Fig. 1) each serve as expansion chambers for the reception of air which
may expand through heat. In conjunction with this the chamber forined by the plate J
and the lower portion H of the supply pipe also acts as an expansion chamber; or
we may apply to the lower part of the pipe C a separate expansion chamber of any
similar form to those above described.
We would have it understood that our method is applicable generally to the feeding
of oil to lighting and heating apparatus, and not limited to the applications shown on
the drawing.
Having now particularly described and 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-
1. The method of automatically controlling the flow of oil to and in lighting and
heating apparatus, substantially as described.
2. The use of a bent siphon (B, Fig. 1) having a contracted inlet or outlet in
combination with a supply pipe (C) for the purpose and substantially as described.
3. The use of any equivalent of a siphon, such as the arrangement shown Figure 2,
or that shown Figures 3 and 4, in combination with the supply pipe C, as and for the
purposes substantially as described.
4. The use in combination with any of the above means of feeding oil for the pur-
poses set forth, of an air and oil chamber connected to or identical with the supply
pipe, substantially as described.
5. The use of an expansion chamber connected with the supply pipe C, in combina-
tion with any form or equivalent of the arrangement shown on Figures 1 to 4,
substantially as described.
Dated this Twants cavanth day of Fabr 1988