Year: 1896

page_text: Date of Application, 25th Aug., 1896
Complete Specification Left, 12th Feb., 1897-Accepted, 1st May, 1897
1, EDWARD JOHN SHAW, of Astral Works, Hatherton Street Walsall in the
County of Staffordshire, Lamp and Glass Manufacturer, do hereby declare the
nature of this invention to be as follows:-
This invention relates to an improved form of gas lamp for incandescent burners,.
(Welsbach system).
It is well known that the maotles of such burners are liable to be deleteriously
affected by external influences such as wind, dust and other causes and their life
thereby impaired or shortened if not altogether destroyed. Such disadvantages.
are particularly liable to occur in the case of incandescent mantles used for out-
door lighting, for example, iu streets or workshops or on railway platforms.
My invention. has for object to overcome these disadvantages and to protect the
burner and at the same time to provide a ready means for the removal of the globe.
when desired.
I attain these objects by supporting the burner upon an oblong tubular frame,.
the burner being attached to a short tube projecting inwardly and upwardly
within the frame, and said tube being conuected with the lower and smaller side
of the frame. The upper end of this frame is continued through a casing of
convenient design and is furnished preferably with a cock or tap having a bye-pass.
by means of which gas can be admitted from a supply pipe to one or both of the
vertical tubes of the frame.
This tap is preferably connected to the supply pipe or ceiling plate by means of
a union furnished with one or more dermatine or other suitable washers whereby
the liability to injury of the mantle from vibration due to street traffic or other
causes, is materially lessened.
One of the frame tubes is arranged to supply the burner and the other to feed a.
small pipe attached to one of the sides of the tubular frame and this small pipe is.
continued up within the mantle forming the "bye-pass" burner.
The head of the lamp is preferably made of a cylindrical form and is provided.
with a number of perforations for the admission of air to the burner. It is partly
closed on its lower side by means of an annular disc rivetted or otherwise secured
thereto at a short distance from the bottom edge of the cylinder. From this disc
a second cylinder of a suitable form to permit the passage of the tubular frame,
projects upwards for a short distance. In the lower or dependent edge of the
cylinder or body I form a number of vertical slots or openings and' continue the
same for a short space in a horizontal direction. Each of the slots or openings is
further provided with a hinged catch, arranged to be operated by a spring or
otherwise.
The upper portion of the outer cylinder terminates in a cone to which is
attached the flue or chimney. Within this fine or chimney I secure an inner tube,.
the two concentric tubes being protected at their upper ends by a cowl or other
suitable guard.
A glass or similar globe of special construction and open ouly at the top, is
attached to the crown in the following manner. The top of this globe is furnished
with a short neck provided with one or more grooves. To this neck a metal collar
is suitably attached and fastened thereto by being spun into the groove or grooves.

page_text: The collar carries a number of pins or studs projecting from the collar and the
collar and pins are of such a size that the latter will pass into the slots corre-
sponding in number and position thereto, formed in the lower edge of the aforesaid
casing. The pins are inserted in the slots and the globe given a slight turn
according to the direction of the slots and the pins are retained therein by means
of the hinged catches engaging therewith or by a hook and chain as may be found
desirable.
In lieu of the tap being fixed at the top of the lamp, I may arrange, in the case
of a burner fitted with a bye-pass, to connect the lever of auch tap to a second
lever pivotted at the top of the lamp, by means of a rod and for this upper lever
to be operated in tho ordinary way by means of a chain or cord.
Gas Lamps.
I, EDWARD JOHN SHAW of Astral Works, Hatherton Street, Walsall in the
County of Staffordshire, Lamp and Glass Manufacturer, 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 form of gas-lamp for incandescent burners.
It is well known that the mantles of such buruers are liable to be deleteriously
affected by external influences such as wiud, dust and other causes and their life
thereby impaired or shortened, if not altogether destroyed. Such disadvantages
are particularly liable to occur in the case of incandescent mantles used for out-
door lighting, for example, in streets or workshops or on railway platforms.
This invention has for object to overcome these disadvantages and to protect the
burner and at the same time to provide a ready means for the removal of the globe
when desired.
On the accompanying sheet of drawings,
Figure 1 is an elevation of a gas lamp fitted with my improvements.
Figure 2 is a similar view with the globe shewn disconnected.
Figure 3 is a longitudinal section of Figure 1.
Figure 4 is a sectional elevation of the improved union.
Figure 5 is an enlarged view of the device for securing the globe to the casing
of the lamp.
In these drawings, the burner A is supported upon an oblong tubular frame b b¹,
the burner being attached to a short tube 60 projecting inwardly and upwardly
within the frame and said tube being connected with the lower and smaller side of
the frame. The upper end of this frame is continued through a casing of convenient
design and is furnished preferably with a cock or tap D having a bye-pass by
means of which gas can be admitted from the supply pipe E to one or both of the
vertical tubes of the frame.
:
This tap D is preferably connected to the supply pipe or ceiling plate E by.
means of a uniou as shewn on Figure 4, in which there is no metallic connection
between the pipe or support E from which the lamp hangs and the lamp itself, the
Connection being broken by dermatine or other similar suitable washers F. By
this device am enabled to materially lessen the liability to injury of the mantle
from vibration arising from street traffic or similar causes.
1

page_text: One of the tubes of the frame is arranged to supply the burner proper and the
other to feed a small pipe attached thereto, this small pipe being continued up.
within the mantle forming the well-known byo-pass burner.
The head of the lamp is made of a cylindrical form and is provided with a.
number of perforations for the admission of air to the burner. It is partly closed
on its lower side by means of an annular disc c rivetted or otherwise secured thereto.
at a short distance from the bottom edge of the cylinder.
From this disc c a second cylinder d of a suitable form to permit the entrance-
and passage of the tubular frame bb projects upwards for a short distance. In the-
lower or dependent edge of the cylinder or body I form a number of vertical slots
or openings e and continue the same for a short space in a horizontal direction..
Each of these slots or openings may be further furnished with a suitable hinged
catch arranged to be operated by a spring or otherwise.
The upper portion of the outer cylinder terminates in a cone, see Figure 1, to
which is attached the flue or chimney C. Within this fine or chimney I secure an
inner tube the two concentric tubes being protected at their upper ends by a cowl.
or other suitable guard. I do not confine myself to the shapes of the casing shewn
on the drawing although those illustrated have been found most convenient, but.
I may use any cylindrical or similar casings which answer my purpose. I may
also when desired use two or more burners within the globe.
The glass or similar globe G of special construction and open only at the top is.
attached to the crown in the following manner. The top of this globe, as shewn
on Figure 5, is furnished with a short neck 9 provided with one or more grooves..
To this neck a metal collar his attached and secured thereto by being spun into
the groove or grooves. This collar A carries a number of pins or studs i projecting
from the collar and the collar and pins are of such a size that the latter will pass
into the aforesaid slots e corresponding in number and position thereto. The pins
being inserted in the slots the globe is given a slight turn according to the direction
of the slots and the pius are retained therein by means of the hinged catches
engaging therewith, or by a hook and chain, see Figure 1, as may be found.
desirable.
Instead of fixing the tap at the top of the lamp as shewn, I may arrange in the
case of a burner fitted with a bye-pass to connect the lever of such tap to a second
lever pivoted at the top of the lamp by means of a rod and for this upper lever to
be operated in the ordinary way by means of a chain or cord.
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. In suspended gas lamps having incandescent burners, a union furnished with
one or more washers of dermatine or other similar material for the purpose of
obviating metallic counection of the component parts of said union, substantially as
described.
2. In suspended gas lamps, the method of securing the globe to the casing of
the lamp by means of a metallic collar secured to the neck of the globe and
provided with pins engaging with slots in said casing, substantially as described.
3. A gas lamp for incandescent burners, constructed combined, and arranged
substantially as described and illustrated upon the accompanying sheet of drawings..
Dated this Twelfth day of Wehrvers 1807