IMPROVEMENTS IN GAS LAMPS
Year: 1887

page_text: Date of Application, 27th Aug., 1887
Complete Specification Left, 18th Jan., 1888
Complete Specification Accepted, 27th Aug., 1888
HENRY WILLIAM COLE and ALBERT FREDERICK COLE, both of Raven Street,
Stourport, in the County of Worcester, Manufacturers, do hereby declare the nature
of our invention for IMPROVEMENTS IN GAS LAMPS to be as follows:-
This invention relates to improvements in the air passages and construction of
regenerative gas lamps, and is applicable for ventilating, general and domestic lighting
purposes.
In the construction of this lamp we use preferably circular air passages terminating
in a centre tube which surrounds and supplies the gas flame with highly heated air.
The gas is conveyed down the said centre hot air tube through a smaller pipe and is
heated in its descent to the burner. The combustion chamber is arranged in a circle
outside the hot air passages; the heat of the flame and products of combustion, on
their course to the chimney thus highly heats the said hot air passages which have
a large amount of heating surface in them exposed to the action of the heat and
flame. The ring which holds the glass in position is made preferably a little larger
in diameter than the body of the lamp for the purpose of supplying air to the
underside of flame.
We light the lamp either by opening the glass, or by means of an opening in
combustion chamber, which opening is made to close automaticly.
We regulate the supply of gas to the burner by means of a flexible diaphragın and
valve, or balanced valve governor.
HENRY WILLIAM COLE.
ALBERT FREDERICK COLE.

page_text: We, HENRY WILLIAM COLE and ALBERT FREDERICK COLE, both of Raven Street,
Stourport, in the county of Worcester, Manufacturers, do hereby declare the nature
of our invention for IMPROVEMENTS IN GAS LAMPS 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 improvements in the construction and air passages of
regenerative gas lamps applicable for ventilating and lighting purposes generally.
In the construction of this lamp we use preferably circular or tangential hot air
passages terminating in a centre hot air tube or tubes which surrounds and supplies
the top side of flame with highly heated air. Gas is conveyed down the centre hot
air tube through a smaller pipe and is heated in its descent to the burner. The
combustion chamber is arranged in a circle outside the hot air passages; the heat
of the flame and products of combustion, on their course to the chimney thus highly
heats the air passing through the said hot air passages, which have a large amount
of heating surface in them exposed to the action of the heat and flame. The ring
which holds the glass in position, is made preferably a little larger in diameter than
the body of the lamp, for the purpose of supplying air to the underside of flame.
We light the lamp either by opening the glass in the usual manner, or by means of
a movable plng, cover or equivalent, situate in the bottom of the glass, which
however forms no part of this invention; and we preferably regulate the supply of
gas to the burner, by any usual means to ensure a steady and uniform light.
Figure 1 of the accompanying drawings, is a sectional plan, and figure 2 represents
a sectional elevation of the lamp in action gas passes down the pipe A to
Burner B and issuing out through the holes of the burner forms a round flame,
the heat and products of combustion from the flame, on passing up the combustion
chamber to the chimney D, surround and impinge on the shoulders and walls
of the hot air chamber or box E, and also on the shoulders and around the hot
air passages E', thereby highly heating the same. The air to supply the top
side of flame, enters through the passages E¹ round the circular or tangential
passages in the chamber or box E, and down the centre tube F, to the top of
the fame. The large amount of heating surface so exposed to the action of the
heat and flame, highly heats the air cn its course from the passages E₁ to the
burner B. Air is supplied to the underside of flame through the air holes G, in
the usual manner the air passing through the air holes G descends down the sides
of the glass H, and then rises heated to the flame; by the passages E being circular
or tangential, a whirling motion is imparted to the heated air passing therethrough,
and the heated air being properly regulated ensures practically perfect combustion
and a steady and brilliant light. The gas is lighted by moving the catch I and opening
the ring L, which holds the glass H in position, or by opening a plug or cover N as

page_text: shown in the bottom of glass H, at M. In some cases it will be useful to permit a
little air to pass through the bottom of glass at M, to the flame.
The lamp represented by figures 1 and 2, is shown as having two circular or
tangential hot air passages, but the number and size of such passages will be varied
according to the size of lamp and the amount of heating surface required, as for
instance in the lamp represented in sectional plan by figure 3, where three passages
are employed.
The centre tube F in figure 2, is shown the same diameter throughout, but such
may be made partly taper as shown in figure 4 at F, or made taper its whole
length.
In the modification illustrated by figure 4, a hot air chamber or box E is used,
which is heated in the same manner as the lamp shown in figures 1, 2 and 3, and is
supplied with air through the passages E' into the chamber or box E, and the air as
it is being heated, takes a circular course in the direction of the arrows, through the
chamber or box E, down the centre tube F, to the burner B; the tube F is by preference
tapered as shown at F; a few holes can be drilled at E2 if desirable to admit more
air to the tube F, and also to prevent dust or such like from accumulating thercat.
Air passes through the holes G to supply the underside of flame with air; and the
heat from the flame passes up the combustion chamber C to the chimney D. The
number and size of air passages E', supplying chamber or box E with air will be
varied according to the size of lamp.
Figures 5 and 6 show a modification in which the circular or tangential hot air
passages E, are formed round the combustion chamber, and then pass through C
to the centre tube F. The gas passes through gas pipe A to burner B and the gas
when lighted forms a round Hame, the heat and products of combustion from such
in passing up the combustion chamber C to the chimney D, surrounds and impinges
on the shoulders and walls of the circular or tangential passages E, and on E and
tube F, thus highly heating the same, and the air is therefore greatly heated as it
passes round the said passages E through E' and down the centre tube F, to the top
side of flame. The centre tube F and gas pipe A are constructed similarly as shown
at and A for the purpose of causing the hot air to flow evenly to the top side
of flame, or the tube F, may be made as shown and described in figure 2.
Air is
supplied to the underside of flame, through the air holes G. The number and size of
hot air passages will be varied according to size of lamp, and the amount of heating
surface required.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is —
First. A regenerative gas lamp, the employment or use of inwardly directed
circular tangential or inclined air passages, or a single air passage, wherethrough air
for supplying combustion to the upper side of the flame of the lamp, passes, (and
becomes highly heated when the lamp is lighted) by the conduction and radiation of
heat given off from the ascending currents of the products of combustion of the gas
flame, which pass through a combustion chamber, whose walls are in juxta position to
the said passages, substantially as described and set forth.
Secondly. The combination with a central air-tube F, of inwardly directed circular
and tangential air passages or chambers E E', substantially as set forth.
Thirdly. The combination with circular tangential air passages E E¹, central tube F,
and gas-pipe A, with inverted burner at lower end, of combustion chambers C, leading
to chimney D, substantially as set forth in the several figures of the drawings.
Fourthly. A regenerative gas lamp, constructed with hot air passages such as E¹,
and a hot air chamber or box such as E with holes such as E, and a central tube or
tubes such as F and F being heated by the heat from the flame and products of
combustion, and through the said passages E¹, chamber E, holes E2, tubes F and F',
air passes, and is heated to supply the flame with hot air, substantially as specified and
illustrated in figure 4 of the accompanying drawings.

page_text: Fifthly. A regenerative gas lamp, constructed with circular or tangential hot air
passages, terminating in a centre tube or tubes such as F; the said hot air passages,
nearly or entirely surrounding the combustion chamber C, and through C, the heat
from the flame and products of combustion pass to the chimney D, and the air on
its course through the said hot air passages, becomes heated, and supplies the flame
with hot air, substantially as specified, and illustrated in figures and 6 of the
accompanying drawings.
Sixthly. A regenerative gas lamp. The employment of deflectors F and A¹, for
the purpose of maintaining an even flow or current of hot air to the flame, as herein-
before described and illustrated by figure 6 of the accompanying drawings.
Deted this 11th slave of Lunuo 1000
HENRY WILLIAM COLE.
ALBERT FREDERICK COLE.
HENRY WILLIAM COLE.
ALBERT FREDERICK COLE.