Year: 1886

page_text: Date of Application, 15th Apr., 1886.
Complete Left, 13th Jan., 1887.
Complete Accepted, 15th Feb., 1887.
I RICHARD WALTER PUGH of 89 Broad Street Pendleton Manchester in the County
of Lancaster House Decorator do hereby declare the nature of this invention to be as
follows:-
This invention relates to that class of gas lamp wherein a circular burner is used,
and heated air admitted to the gas to add to the brilliancy of the light, and my object
has been to construct a more convenient, more simple and more perfect lamp than has
hitherto been made.
Below the circular burner and in communication therewith, I fix a tube extending
down to the outside of the globe or glass of the lamp, and on the outer side of this
tube I prefer to cut grooves, or form projections, corresponding with projections or
notches upon an outer tube which slides thereon and carries the globe of the lamp.
A bayonet joint at the top of the inner tube enables the globe or glass to be fixed in
position by a partial revolution being given to the outer tube.
This joint may be supplemented or even replaced by notches or slots in the metal
body of the lamp into which engage hooks on two or more light curved arms extending
from the before named outer tube or slide, and thus forming a bayonet joint to fix the
globe or glass in place. The glass itself is carried by a metal or other disc fixed or
formed preferably at the lower end of the outer tube or slide; and I provide this disc
with an opening covered by a suitable swivelling or hinged door for the insertion of a
taper or other equivalent for igniting the gas at the burner.
Immediately below the burner and above the bayonet joint before named I place an
air chamber provided with a diaphragm of wire gauze or equivalent substance through
which the air passes to mix with the gas in the burner.
In the outer tube or slide below this lower air cell I form, near the bottom, holes
through which a portion of the air passes into the globe and impinges upon the
underside of the flame so as to spread it outwards and upwards in a saucer form.
This air then passes out through the vertical tubes in the upper air cell (hereinafter
mentioned) to the chimney.

page_text: Above the burner in the metal body of the lamp I have an upper air cell into which
air is admitted through openings in the exterior case just above the top of the glass
globe. This air passes inwards and downwards through openings just above the
Burner where it meets the flame and deflects it downwards and outwards. This air
then escapes with the products of combustion by means of vertical tubes (passing the
upper air cell) to the chimney.
-
The gas supply pipe extends upwards from the burner to the tap which I regulate
as follows.
The tap itself (which is of a valve form) is opened or closed vertically by means of
a screw thread formed upon the valve spindle which I prolong and carry down through
the centre of the gas pipe, the burner and the air tube, and provide with a milled
button or other suitable head, so that it may be opened and closed or regulated outside
the lamp in a very convenient manner.
I may also provide this spindle with a second valve to regulate the quantity of air
admitted by the air tube to the burner.
GEORGE DAVIES,
4, St. Ann's Square, Manchester,
Agent for the Applicant.

page_text: 1 RICHARD WALTER PUGH of 89 Broad Street Pendleton, Manchester in the County
of Lancaster, Decorator do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly desoribed and ascertained in
and by the following statement :—
This invention relates to that class of gas lamp wherein a circular burner is used,
and heated air admitted to the gas to add to the brilliancy of the light, and my object.
has been to construct a more convenient more simple and more perfect lamp than has
hitherto been made.
The nature of my invention and the manner in which the same is to be carried into
practical effect will be readily understood on reference to the three sheets of drawings
hereunto annexed, and the following explanation thereof.
On Sheet 1. Fig. 1. is a vertical section through a lamp constructed according to
my invention.
On Sheet 2. Fig. 2. is an elevation (partly in section) of a modification thereof
showing the lamp surrounded by a wind guard.
On Sheet 3. Fig. 3. is a plan view of the metal body of the lamp: Fig. 4. is an
underneath view of the disc hereinafter described: Fig. 5. is a sectional detached view
of a modification of the tap and Figs. 6. & 7 are enlarged sectional views of
detached portions hereinafter more particularly referred to.
:
Below the circular burner a, a (Figs. 1. 2 and 6.) and in communication therewith,
I fix a tube b, b extending down the outside of the globe or glass c, c, of the lamp, and
on the outer side of this tube I prefer to cut grooves, corresponding with projections or
to form projections d, d corresponding with notches or with projections e, e upon an
outer tube which slides thereon and carries the globe c, c of the lamp, thus forming
a bayonet joint at the top of the inner tube b, which enables the globe or glass c, e
to be fixed in position by a partial revolution being given to the outer tube ff by
means of the handle /'/'.
This joint may be supplemented or even replaced by notches or slots
h
in the
metal body of the lamp (see Fig. 3) into which fits hooks on two or more light curved
arms (shown by dotted lines at h, Fig. 1.) extending from the handle f¹ on the
before named outer tube or slide ff, and thus forming a bayonet joint to fix the globe
or glass in place, the arms h, also acting as guards for the protection of the same.
The glass e, e itself is carried by a metal or other disc i, i fixed or formed preferably
at the lower end of the outer tube or slide and I provide this dise, with an
opening covered by a suitable swivelling or hinged door k, k (Figs. 1. 2 and 4) for the
insertion of a taper or other equivalent for igniting the gas at the burner a, a.
This disc may be either in two pieces as shown in Fig. 1. in which case the
amount of air admitted into the globe may be regulated by screwing the outer piece i
up or down; or it may be made in one piece as shown at Fig. 2, it is then provided
with holes which are opened or closed more or less by turning round the loose ring",
which is also made with corresponding openings.
Immediately below the burner a, a and above the bayonet joint d, d, e, e I place an
air chamber provided with a diaphragm m, m of wire gauze or equivalent substance
through which the air passes to mix with the gas in the burner a, a as seen at Fig. 7.

page_text: In the outer tube or slide, below this lower air cell, I form (in addition to the
openings in the disc i, i near the bottom) holes at n, n through which a portion of
the air passes and is admitted by the distributing perforated diaphragm ', ' into the
globe e, c and impinges upon the under side of the flame so as to spread it outwards
and upwards in a saucer form as shown by the dotted arrows.
This air then passes out through the vertical tubes o, o in the upper air cell (herein-
after mentioned) to the chimney.
Above the burner in the metal body of the lamp I have an upper air cell
P; P into
which air is admitted through openings in the exterior case just above the top of
the glass globe c, c.
This air passes as shown by the arrows inwards and downwards through openings 4,7
covered (by preference) with wire gauze, and then through perforations at r, just
above the burner a, a where it meets the flame and deflects it downwards and
outwards.
This air then escapes with the products of combustion by means of vertical tubes o, o
(passing through the upper air cell) to the chimney s, s.
The gas supply pipe t, extends upwards from the burner a, a to the tap which I
regulate as follows.
The tap
(which is of a valve form) is opened or closed vertically by means of a
screw thread formed upon a suitable head attached to the valve spindle, which I
prolong and carry down through the centre of the gas pipe t, t the burner a, a and the
air tube b, b, and which I provide with a milled button or other suitable head v³, w² so
that the valve holes may be opened and closed or regulated outside the lamp in a very
convenient manner.
I may also provide this spindle e, with a second valve (not shown on the drawings)
to regulate the quantity of air admitted by the air tube b, to the burner a, a.
The tap u, u may be made in a variety of ways: for example, it may be in the form
of an ordinary gas tap, as shown at Fig. 5. the plug of which is turned by means of
the spindle, e.
The wind-guard w, we shown at Fig. 2. is intended to be employed when the lamp is
to be hung outside; its use is to shield the air inlets of the lamp from the action of the
wind, and cause the air to follow the serpentine course indicated by the arrows in
this figure.
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 :-
In a gas lamp of the nature hereinbefore indicated.
1. The bayonet joint or joints hereinbefore shewn and described, for attaching the
glass or globe to the lamp and detaching it therefrom.
2. The combination of the tube, to admit air to mix with the gas inside the burner,
with the tube to admit air immediately beneath the said burner substantially as described
and illustrated by the annexed drawings.
3. The lower air chamber provided with a diapragm of wire gauze (or its equivalent)
for mixing the air and gas in the burner.
4. The gas tap placed above the burner and consequently in the upper air chamber,
and the means for opening and closing the said tap without removing the glass or globe,
and for igniting the gas.
5. The general construction and arrangement of parts constituting an improved gas
lamp substantially as hereinbefore described, and illustrated by the drawings annexed.