Improvements in Lamps or Lanterns for Outdoor Lighting (and Indoor Draughty Positions).
Year: 1896

page_text: Improvements in Lamps or Lanterns for Outdoor Lighting (and
Indoor Draughty Positions).
OWEN HUAB DAVIES, 13 Stracey Road, Willesden, London, N.W., Draper, do
hereby declare the nature of this invention to be as follows:-
A Lantern to be used with gas, oil or electricity for out-door lighting-which
is also specially adapted for draughty indoor positions, and, generally, by denuding
it of the reflector hereinafter described, in any position-constructed materially of
glass and metal. The glass is in the form of a bulb or globe, an approximation in
shape both to an egg and a heart, whereby a greater lighting or refracting surface
is obtained than by means of any of the globular forms now used. This glass
bulb or globe is attached to the metallic top of the lantern by a special arrange-
ment of lips or rims of corresponding diameters between which is inserted the
annular outward flange of the top part of the glass globe, the metallic lips being
fastened together with pins or bolts, while for convenience of access to the internal
parts of the lantern for lighting, cleaning and the like I use a telescopic arrange-
ment specially adjusted to the parts, by which the glass globe easily slides from or
to its metallic dome. Below the dome and above the globe I attach a reflector of
a semi-parabolic form with an upward curve thereto to avoid shadow in the portion
intended as the front of the globe, and a downward slope following the shape of
the globe to a point about parallel to the point or points of ignition at the back
so that the maximum of reflected light is concentrated upon objects fronting the
lantern. In the bottom of the globe is a circular aperture, and into this I adjust
an annular piece of metal in which are bored holes of sufficient diameter to admit
any wire or similar attachments for the regulation of the light or lights. I also
fix in metallic grooves, or fix by any other method, a circular or any other
form of glass, to project beyond the outer surface of the globe, so that it may be
protected from the effects of cold moisture upon its heated surface. The top
metallic part is constructed with the necessary air conducting passages or cham-
bers, the equilibrium of a supply of air to feed the light, and the exit of the heated
products of combustion being fully secured by arrangements common to regenera-
tive and other lamps, the air inlets being so arranged that cold currents of air
are forced in the first place around the inner surface of the globe, and rendering
the light brighter by such process of warming the air-currents, before they are
impinged upon the flame or flames in the case of gas-lights.
1000

page_text: Improvements in Lamps or Lanterns for Outdoor Lighting (and
Indoor Draughty Positions).
I, OWEN HUAB DAVIES, of 13 Stracey Road, Willesden, London, Draper 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 lamps or lanterns which are specially adapted for use
in the open air and in other windy or draughty situations whether indoors or
out.
According to my invention I provide an ordinary regenerative or other lamp
with means by which the glass globe can be withdrawn from its position around
the burners for cleaning purposes or otherwise, without its being necessary to
actually remove such globe. For this purpose the globe is connected to the lamp
by a hinged rim which is provided with telescopic or sliding rods or arms and with
suitable fastening devices for normally retaining the said rim in a raised position
with the globe around the burners.
If the lamp be intended for use with gas or oil I prefer to provide in the
bottom of the globe an aperture, which is kept closed by a movable plate that is
capable of being shifted to uncover said aperture and permit of the insertion of
a lighted taper or other means for igniting the lamp, or regulating the burners.
The lamp is also provided with an external reflector of the kind hereinafter
described.
I may also provide a glass shield of circular or other suitable form, and so arranged
as to protect the globe from the effects of rain falling upon its heated surface;
or, instead of employing a shield as above set forth, I may so form the upper part
of the reflector that it shall serve this purpose.
The upper part of the lamp is constructed with the necessary air-conducting
passages or chambers, the equilibrium between the supply of air to feed the light,
and the exit of the heated products of combustion, being secured by arrangements
commonly employed in regenerative and other lamps. The air inlets are so
arranged that cool currents of air in their passage to the burners are caused to pass
around the inner surface of the globe, and are thus warmed before they reach the
burners, the light is thus improved and the globe kept cool.
In order that my invention may be more fully understood and readily carried
into effect I will describe the same more fully with reference to the accompanying
drawings, in which:-
Figure 1 is a front elevation, partly in section;
Figure 2 a side elevation; and
Figure 3 an underside plan, of a lamp constructed according to my invention
and adapted for use with incandescent gas burners.
Figures 4, 5 and 6 detail views hereinafter referred to.
A is the head or chimney of the lamp; B is the globe; C is the gas-feed pipe
carrying burners C¹ C₁ C¹ of any suitable construction; and D is the reflector."
The globe is carried by the annular hinged rim e which embraces an outwardly
turned flange a with which the top of such globe is formed. e' is the hinge of the
said rim, the two parts thereof being secured in their closed position by a screw
stud ea (Figure 3), or other suitable fastening. One of the parts of this hinged
rim is rigidly secured to the lamp, while the other is capable of being turned out-
wardly into an open position as shown in dotted lines in Figure 3, to receive the
flange a of the globe,

page_text: The said hinged rim is supported by the arms f which slide within tubes g,
thus forming a telescopic arrangement that permits the globe to be drawn down
away from the burners without being detached from the rim. If desired I may
pivotally secure the arms f to the rim e, by a hinge or joint f. This permits the
globe to be tilted to one side to facilitate cleaning thereof, as illustrated by the
dotted lines in Figure 2.
In cases where the head or chimney A of the lamp may he to short to permit of
the use of telescopic arms, of a length sufficient to allow the globes being drawn
down clear of the burners as above stated, I may make the arms themselves
telescopic so that they will be extensible.
The hinged rim carrying the globe is retained in its normal or upper position
by fastening devices which, in the drawings, consist of clips or catches k, having
shoulders which engage with a shoulder e3 on the rim e. Each of these ciips
or catches is pivoted at to the frame of the lamp, and is provided with a tail
against which a spring acts to keep the clip in engagement with the rim. The
said clips are also provided with a thumb piece to enable them to be readily
disengaged from the rim when the globe is to be drawn down.
The base of the globe has a circular aperture covered by two perforated dises A
and i which clip or grasp the edges of the globe between them. This arrangement
is shown more clearly in Figures 4 and 6. The lower disc i is provided with a
movable plate i for closing the said aperture, such plate being capable of turning
angularly to open the aperture when the lamp is to he lighted. Obviously how-
ever I may form the disc i with two revolving segments, and in that case the dise
would have two semi-circular openings instead of only one.
The two discs may be mounted on the rod c that forms a continuation of the gas
feed pipe, and may be held in position by a stop on such rod, and the ornamental
knob el secured on its extremity. I prefer however to mount the two discs on a
separate tubular piece j which is fixed at one of its ends to the disc h, and is screw-
threaded at its other end to receive the nut j. The disc i fits loosely on this
tubular piece and is tightened on to the edges of the aperture in the globe by the
nut . The tubular piece j fits loosely on the rod e so that it will not impede
the descent of the globe when the knob el has been removed.
Instead of this sliding disc arrangement, I may employ a detachable flanged
knob of the kind shown in Figure 6 the flange of which serves to close the
igniting aperture of the globe. The said knob is provided with a lateral set screw?
that enters a groove in the rod c and retains said knob in position in a simple
and convenient manner. In this case I form a boss or protuberance 3 on the rod c
between which, and the flange of the knob, the lower portion of the globe is
clasped.
D is the reflector, carried by the head A of the lamp and having an upwardly
curved portion D' at the front of the lamp so that it will not obstruct the light
in an upward direction, in cases, for instance, where the lamp is used for illumi-
nating shop windows. The main portion D2 of this reflector follows approximately
the curve of the globe and is continued down at the back of the lamp to a position
approximately in a line with the burners as shewn. The flat portion D of this
reflector serves to prevent rain or moisture dripping on to the globe.
The path followed by the air entering to support combustion is shown by full
arrows in Figure 1, and the path followed by the products of combustion and
heated air is shewn by dotted arrows in this figure.
When it is desired to withdraw the globe from its position around the burner,
the knob c is first removed. The lower ends f of the telescopic arms f are then
grasped in the operators hands, and the catches & disengaged from the rim e by
a pressure of the operator's thumbs on the thumb pieces . The arms f can then
he drawn downwardly together with the rim e and the globe B, a suitable stop or
stops being provided to limit the extent to which the arms can be withdrawn from
the tubes g. When cleaning the interior of the globe it may be tilted, as already

page_text: stated, by reason of the hinges f¹ provided at the lower ends of the arms f, so that
the operator's hand can be readily passed into the globe without coming into
contact with the burners C¹.
To return the globe to its normal position the arms f are forced upward until
the rim strikes against the catches k with which it will automatically engage.
If desired the continuation c of the gas feed pipe C, and the knob c may be
dispensed with; or the knob may be formed in one piece with the nut j¹, in which
case a solid bolt would preferably be used in place of the tubular piece j. I may
also in some cases use more than two telescopic arms.
It will thus be seen that the globe of my improved lamp is supported without
being in any way attached to the gas feed pipe, and that the said feed-pipe has no
telescopic or similar joints.
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. A lamp having telescopic or sliding arms carrying a hinged rim for sup-
porting the globe and provided with suitable fastening devices for the purpose
specified.
2. The combination with the aforesaid telescopic arms and hinged rim of a
pivotal connection between the arms and the rim for the purpose specified.
3. A lamp provided with an external reflector of the shape substantially as
described and for the purposes specified.
4. The movable plate for covering the igniting aperture at the bottom of the
globe, constructed substantially as described with reference to Figures 4 and 5
and for the purposes specified.
5. A. lamp constructed substantially as described with reference to the accom-
panying drawings for the purposes specified.
Dated this 19th day of July 1897.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.