Year: 1887

page_text: Date of Application, 12th Apr., 1887.
Complete Left, 4th July, 1887.
Complete Accepted, 16th Aug., 1887,
I WILLIAM Fox of Sandbach in the County of Chester Photographer do hereby
declare the nature of this invention to be as follows:-
My invention relates to an improved construction of Lamps for burning petroleum
oil by which more perfect combustion is effected explosions prevented and the lights
of the lamps safely and instantly extinguished.
To obtain these results the wick-holder is surrounded by an air-shaft which extends
from or nearly from the bottom of the wickholder to a point a little higher than the
top of it, through this shaft a constant current of cold air ascends when the lamp is
burning which by keeping down the temperature of the wickholder and other parts
of the Lamp prevents the vaporization of more oil than is required to keep up the
flame and at the same time gives increased support to combustion.
The wickholder and the air shaft surrounding it are placed either on the outside of
the reservoir or the shaft can be carried through the reservoir.
The wickholder is connected with the reservoir at the bottom or on the side near
to the bottom by a small tube or duct the orifice of which inside the reservoir is
protected by a cap of fine wire gauze commonly called "lamp gauze.'
"
Another mode of applying the same principle is to pass the wickholder through the
side of the reservoir near the bottom.
The diameter of the airshaft varying according to that of the wickholder and size
of Lamp.
The principle is applicable to flat circular and curved wicks.
Furthermore the light is extinguished by a new form of extinguisher which is
placed either within or at the bottom of the air shaft through which it operates by
pneumatic pressure, and by instantly stopping the current of air, which current being
again allowed to flow at once extinguishes the light.
The apparatus for this purpose consists of a trap-door or shutter made so as to stop
or restore the passage of air to the shaft by pressure on a lever, when the pressure is
taken off the door or shutter is opened automatically by a spring hinge preferably
made of wire.
Dated this Eleventh day of April 1887.
WILLIAM FOA,
High Street, Sandbach,
Cheshire.

page_text: I WILLIAM Fox of High Street Sandbach in the County of Chester Photographer
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 an improved construction of lamps for burning Petroleum
Oil by which explosions are prevented more perfect combustion is effected and the
lights of the lamps instantly extinguished.
To obtain these results the wickholder is surrounded by an Air shaft which extends
from the bottom of the wickholder to a height a little above level with a little below
the top of it through this shaft a constant current of cold Air ascends when the lamp
is burning which by keeping down the temperature of the wickholder and other parts
of the Lamp prevents the vaporization of more Oil than is required to keep up the
flame and at the same time gives increased support to combustion.
The wickholder and the Air shaft surrounding it are placed either on the outside of
the reservoir or the shaft can be carried through the reservoir.
The wickholder is connected with the reservoir at the bottom or on the side near the
bottom by a small tube or duct the orifice of which inside the reservoir is protected by
a cap of fine wire gauze commonly called "lamp gauze."
Another mode of applying the same principle is to pass the wickholder through
the side of the reservoir near the bottom. In this case the Wire gauze may be
dispensed with.
The combustion is still further improved by placing within the Air shaft flat
wickholders the tops of which are level with each other and the distance between them
being ths of an inch or thereabouts thus when the Lamp is burning a current of
Air ascends between the flames which converge or unite in one or are separated by a
very fine space but practically forming one flame with a very perceptible increase of
light. The pinion and slots in the wickholder are very carefully encased.
The diameter of the Air shaft varying according to that of the wickholder and size
of Lamp.
The principle is applicable to flat, circular and curved wicks.
Furthermore the light is extinguished by a new form of extinguisher which is
placed either within or at the bottom of the Air shaft through which it operates by
pneumatic pressure and by instantly stopping the current of Air, which current being
again allowed to flow at once extinguishes the light.
The apparatus for this purpose consists of a trap-door or shutter made so as to stop
or restore the passage of Air to the shaft by pressure on a lever. When the pressure
is taken off the door or shutter is opened automatically by a spring hinge preferably
made of wire.

page_text: Flames united.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is
1. The separation of the wick-holders from the Oil reservoirs (except by the small
duct at the bottom) and placing them in Air shafts which prevent any accumulation
of Oil vapour: thus ensuring safety from explosions.
2. A new arrangement of flat wick-holders in such a manner. that the flames from
the wicks of them converge and unite practically forming one flame: thus obtaining
more perfect combustion.
3. A new form of extinguisher which acts by pneumatic pressure as described.
Dated this Sreand dow of Iul 1887