Improvements in Hydro-carbon and other Oil Lamps.
Year: 1891

page_text: Date of Application, 18th June, 1891
Complete Specification Left, 18th Mar., 1692--Accepted, 23rd Apr., 1992
PROVISIONAL SPECIFICATION.
Improvements in Hydro-carbon and other Oil Lamps.
I, JOSEPH BEVERLEY FENBY, of Sutton Coldfield, in the County of Warwick,
Consulting Engineer, do hereby declare the. nature of this invention to be as
follows:-
My invention relates to oil lamps having the oil container above the burner and
the supply of oil regulated by the comsumption of the burner.
I effect this in the following manner :-
I place an oil container above a second or overflow container. The upper or oil
container is hermetically closed except for the openings to be herein after
described. The lower or overflow container is left open to the atmosphere. I
form a well in the bottom of the upper container reaching below the bottom of the
lower container, and from the top of the said upper container a funnel having a
hinged lid passes into the well and also reaches below the bottom of the lower
container. Near the bottom of the well is an outlet into a tube having its mouth
turned upwards and reaching into the lower container. Into this tube a valve is
fitted which, being worked by the lid of the funnel closes the outlet while the said
lid is opened, and when the said lid is closed the outlet is opened. Through the
bottom of the oil container an air pipe passes reaching from the burner cup to the
top of the said container. In the bottom of the overflow container a well is
formed. An oil supply pipe of large diameter passes from the burner cup through
the bottom of the well into a bell trap of a well known type.
The accompanying drawing illustrates my invention. a is the oil container
and the overflow container. In the bottom of the oil container is a well e
reaching below the overflow container b. Into this well dips a funnel & having a
hinged lid e. Near the bottom of the well c is an outlet into a tube, which is
turned upwards into the overflow container b. In the tube f is a valve g worked
by the lid e by means of any suitable mechanical contrivance. An air pipe h
passes through the bottom of the oil container a and reaches from the burner cup
to the top of the said oil container d. In the bottom of the overflow container b
a well k is formed. An oil supply pipe of large diameter passes from the
burner cup up through the bottom of the well k into a bell trap m of a well
known type.
i
My improved lamp acts as follows:-When the lid e is opened the valve g is
closed. Thus the oil poured into the funnel d rises in the well c and passes into
the oil container a driving the air down the air pipe and out through the burner
cup. The oil will now stand in the funnel d at the same height as that in the oil
container a. The oil container a being full the lid e is closed and the valve g
is opened. The oil in the funnel d now runs through the tube into the
overflow container b, and the level of the oil in the funnel d will be the same
as that in the overflow container so long as the valve g is open. The
head of oil in the oil container a will cause air to enter the said oil container a
through the tube h, and the oil displaced will pass through the well c and the
tube into the overflow container b. From the overflow container the oil will
run into the well k, through the trap m and down the tube into the burner cup i.
When the oil rises and closes the tube h, no more air can enter the oil container a.
Therefore no more oil can run from the container a until consumption has taken
place and air has passed up the tube h. When the oil in the burner cup closes
the tube it also closes the tube 1, as these tubes enter at the same level. The oil
will rise in the tube h to a head sufficient to balance the head of oil in the
container a

page_text: When the oil container a contains air as well as oil, an overflow will occur
through a rise of temperature or barometric change. This overflow will pass into
the overflow container band will be prevented from flooding the burner cup i by
the action of the bell trap m.
In the accompanying drawing the supposed overflow is shewn by a dotted line in
the overflow container b. Such an overflow having taken place oil would pass
through the bell trap m down the tube / until the oil in the burner cup i rose to
the height shewn by the dotted line in the said burner cup i. There would also be
a slight rise in the tube has indicated, and also a rise in the tube until the air in
the tube is compressed by the head of oil in the burner cup i sufficiently to
prevent the oil from passing through the trap m.
When the air in the oil container a contracts through a fall of temperature or
barometric change, the oil in the overflow container ò is forced back through the
tube and well c into the oil container a by the outer atmospheric pressure.
Dated this 17th day of June 1891
J. BEVERLEY FENBY.
COMPLETE SPECIFICATION.
Improvements in Hydro-carbon and other Oil Lamps.
I, JOSEPH BEVERLEY FENBY, of Sutton Coldfield, in the County of Warwick,
Consulting 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 :-
My invention relates to oil lamps having the oil container above the burner and
the supply of oil regulated by the consumption of the burner.
I effect this in the following manner :-I place an oil container above a second
or overflow container. The upper or oil container is hermetically closed except
for the openings to be hereinafter described. The lower or overflow container is
left open to the atmosphere. I form a well in the bottom of the upper container
reaching below the bottom of the lower container, and from the top of the
said upper container a funnel having a hinged lid passes into the well and
also reaches below the bottom of the lower container. Near the bottom of
the well is an outlet into a tube having its mouth turned upwards and
reaching into the lower container. Into this tube a valve is fitted which,
being worked by the lid of the funnel, closes the outlet while the said lid is
opened, and when the said lid is closed the outlet is opened. Through the bottom
of the oil container an air pipe passes reaching from the burner cup to the top of
the said container. In the bottom of the overflow container a well is formed. An
oil supply pipe of large diameter passes from the burner cup through the bottom
of the well into a bell trap of a well known type.
The drawing accompanying the Provisional Specification illustrates the general
principle of my invention. In the bottom of the oil container a is a well c
reaching below the overflow container b. Into this well dips a funnel d having a
hinged lid e. Near the bottom of the well c is an outlet into a tube f, which is
turned upwards into the overflow container b. In the tube f is a valve g worked
by the lid e by means of any suitable mechanical contrivance. An air pipe /
passes through the bottom of the oil container a and reaches from the burner cup i
to the top of the said oil container a. In the bottom of the overflow container b
a well is formed. An oil supply pipe of large diameter passes from the
burner cup up through the bottom of the well into a bell trap m of a well
known type.
My improved lamp acts as follows:--When the lid e is opened the valve g is
closed. Thus the oil poured into the funnel d rises in the well c and passes
into the oil container a driving the air down the air pipe and out
through the burner cup i. The oil will now stand in the funnel d at the same

page_text: height as that in the oil container a. The oil container a being full the lid e is
closed and the valve g is opened. The oil in the funnel d now runs through the
tube into the overflow container h, and the level of the oil in the funnel d will be
the same as that in the overflow container b so long as the valve g is open. The
head of oil in the oil container a will cause air to enter the said oil container a
through the tube h, and the oil displaced will pass through the well c and the
tube into the overflow container b. From the overflow container b the oil will
run into the well k, through the trap m and down the tube into the burner cup i.
When the oil rises and closes the tube h, no more air can enter the oil container a.
Therefore no more oil can run from the container a until consumption has taken
place and air has passed up the tube h. When the oil in the burner cup closes the
tube it also closes the tube 1, as these tubes enter at the same level. The oil
will rise in the tube to a head sufficient to balance the head of oil in the
container a.
When the oil container a contains air as well as oil, an overflow will occur
through a rise of temperature or barometric change. This overflow will pass into
the overflow container and will be prevented from flooding the burner cup i by
the action of the bell trap m.
In the drawing accompanying my Provisional Specification the supposed
overflow is shewn by a dotted line in the overflow container b. Such an overflow
having taken place oil would pass through the bell trap m down the tube / until
the oil in the burner cup i rose to the height shewn by the dotted line in the said
burner cup i. There would also be a slight rise in the tube h as indicated, and
also a rise in the tube / until the air in the tube / is compressed by the head of oil
in the burner cup i sufficiently to prevent the oil from passing through the
trap m.
When the air in the oil container a contracts through a fall of temperature or
barometric change, the oil in the overflow container is forced back through the
tube and well c into the oil container a by the outer atmospheric pressure.
a
On the drawing accompanying the Complete Specification Fig. I. shews a lamp
constructed according to my invention and Figs. II and III illustrate details.
The same letters of reference indicate the same parts as in the drawing
accompanying the Provisional Specification. is the oil container, the
overflow container, c the well, d the funnel, e the lid of the same, is the tube in
which the valve a works, is the air tube, is the burner cup, kis the well for the
trap, and m is the trap covering the upper end of the oil tube /.
n shews a
reflector which throws the light downwards and outwards, and also wards off heat
from the oil container.
Fig. IV shews an enlarged air trap on the lower end of the oil tube 7, which
increases the check action against overfeeding of oil.
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 :-
1. Oil lamps, having the oil container above the burner, constructed as described
and illustrated.
2. The combination of an oil container, an overflow container, the filling funnel
and well, the valve operated by the lid of the funnel, the air tube h, the oil tube l
and the trap m for the purposes set forth.
1741
CM 1000
J. BEVERLEY FENBY.