Improvements for Fittings in Incandescent Street Lamps and the like.
Year: 1896

page_text: Date of Application, 21st July, 1896'
Complete Specification Left, 15th Apr., 1897-Accepted, 5th June, 1897
PROVISIONAL SPECIFICATION.
Improvements for Fittings in Incandescent Street Lamps and
the like.
JOHN WESTWOOD LEA, and JOHN HALL PERRINS, Chandelier Manufacturers both
of Midland Works, Bracebridge Street Birminghain do hereby declare the nature of
this invention to be as follows:-
The usual method is to suspend the lamp, by means of a permanently fixed rod or
tube, which passes through the centre of the lamp, from the top, and sometimes from
underneath the lamp. At the terminus of the rod or tube, inside the lamp, are
attached one, two, or more incandescent gas burners, such burners remaining a
fixture.
We may mention that great difficulty arises, when these lamps are required to be
cleaned inside, from fear of damaging or breaking the mantles or chinneys.
We have proposed the following:-To suspend the lamp by means of a permanently
fixed rod or tube, which passes through the centre, from the top of the lamp & down
the inside of the lamp close to the frame, & not direct through the centre.
At the terminus of the rod or tube, inside lamp, we fix a swivel arm or bracket, to
which may be attached, the number of burners required. On the rod or tube just
above the swivel arm, we fix a small metal projection, through which a hole has been
drilled, to allow the insertion of a peg. Also to the swivel arm we fix a metal plate
with two holes drilled in, one each end, so that plate swings, along with arm, in a
semi-circle, directly underneath the metal projection, on rod."
On the peg, which we insert in netal projection on rod, we put a coiled spring, and
underneath a small screwed washer, which keeps the spring in position.
When required to place the swivel arm, with burners attached, in position for
lighting, the arm is brought into the centre of the lamp, so that one of the holes, in
the plate attached to the arm. is directly underneath the peg. The peg then drops
down into this hole and holds the arm in position. When lamp is required to he
cleaned inside, to lessen the risk of breaking mantles or chinneys, the peg is
withdrawn, and the arm is swung outside the lanp, and the peg falls into the second
hole in the plate underneath, thus keeping the arm stationary.
Dated this 18th day of July 1896.
JOHN WESTWOOD LEA.
JOHN HALL PERRINS.
COMPLETE SPECIFICATION.
Improvements for Fittings in Incandescent Street Lamps and
the like.
JOHN WESTWOOD LEA and JOBN HALL PERRINS, Chandelier and Electric Light
Fittings Manufacturers, of Midland Works, Bracebridge Street, Birmingham,
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:-
Our invention has reference to the burner fittings, or attachments, used inside gas,

page_text: and oil, lamps, but more particularly to fittings for incandescent gas lamps, which
are used to support the burners, that require a bye-pass, or pilot light.
The method usually employed is to suspend the lamp by means of a permanently
fixed rol, or tube, which passes through the centre or body of the lamp, from the top,
and sometimes from underneath the lamp. At the terminus of this rod, or tube, are
attached one, two, or more incandescent gas burners, such burners remaining a fixture.
Here we may mention great difficulty arises, when the lamp or lamps are required to
be cleaned inside, from fear of damaging or breaking the burners, chimneys and
manties. We therefore have proposed the following:-To suspend the lamp, by
means of a permanently fixed rod or tube, which passes through the centre, at the top
of the lamp & then down the inside of the lamp, close to the body or frame, and not
directly through the centre, from top to bottom, or again, as in pillar lamps, we may
pass the rod, through the centre at the bottom of the lamp, and then up the side of
the body or frame and not direct through the centre of the body, from bottom
to top.
At the terminus of the rod or tube a Fig 1. which is termed the gas-way, we fix to
same, inside the lamp, the swivel tube arm or bracket b, to which said arm, we attach
the burners CC. Here we may state that we can attach any number of burners, to the
said arm, this depending upon the illuminating power required, and is immaterial.
Also to the said gas-way a wo attach another swivel tube arm G, which is separato
from the swivel arm b, but is bent upward, so that part of this second arm G is level
with the arin, or nearly so, so that when connected to the burners C, C, the said
arm G. swings in unison, with the said arm b. We may herein mention, that the
arm & is a continuation of the main gas-way a, through which the gas passes to feed
burners CC.
The use of the arm G is to conduct a sufficient supply of gas to feed the pilot lights,
after the gas is shut off from the inain arm 6, by means of the lever tap H, the gas
passing along the small tube K into the said arm G.
To the gas-way a, above the swivel arm b, we fix a small metal projection d, through
which a hole has been drilled to allow the insertion of the peg or bolt E on which we
fasten a coiled spring, by means of a small serewed nut, which prevents the said
bolt E, from withdrawing out of the hole, in the plate F, hereinafter described. To the
swivel arm b, we fix the metal plate , of a semicircular shape, with two holes drilled
in, one at each extremity.
When it is required to place the said arm b, with burners attached, in position for
lighting, the arm b is brought in the centre of the lamp, so that one of the holes in
the plate F, is directly underneath the bolt E, the point of which then drops down into
this same hole, and thus preventing the arm b, from swaying to & fro, and also
keeping same (that is the arm ) in position, in the centre of the lamp.
When the lamp is required to be cleaned inside, to lessen the risk of damaging
burners, mantles and chimneys, the bolt E is withdrawn from the hole in plate F, which
enables the arm b to be swung outwards. The semi-circular plate F, which is attached
to armas already described, also swings outwards with the arm, thus bringing the
second hole in plate F directly underneath the bolt E, which then falls into this bole,
and acts in a similar manner, as when the arm is inside the lamp, i.e. preventing the
arm from swaying back into the original position, thus the lamp is given free access
for cleaning, by removal of the burners and burner parts, from inside, without
detaching any or cither of the parts heretofore described.
Having now particularly described and ascertained the nature of our said inven-
tion, & in what manner the same is to be performed, we declare that what we
claim as our invention of "Improvements for fittings in incandescent street lamps,
and the like," -
First. Suspending incandescent street lamps, by means of a rod or tube, which is
not continued direct through the centre of the lamp, but down the side, or in a like
manner, from the bottom of the lamp.

page_text: Secondly. Obtaining free access to the interior of incandescent lamps, for cleaning
purposes, without detaching burners, or burner parts.
Thirdly. A separate bye-pass arrangement by means of a swivel arm, for switch
pilot burners.
DL: 14h
11907
JOHN WESTWOOD LEA,
JOHN HALL PERRINS,
Members of the Firm of Lea & Perrins.