Improvements in and relating to Street Lanterns for the Reception of Incandescent Electric Lamps.
Year: 1898

page_text: Improvements in and relating to Street Lanterns for the Reception of
Incandescent Electric Lamps.
I, JOHN EDWIN STEWART, of 10, Trowels Lane, in the County Borough of
Derby, Electrical Engineer, do hereby declare the nature of this invention to be
as follows:-
:―
The object of my invention is to provide a form of street lantern suitable for
the reception of incandescent electric lamps the design of the said lantern being
particularly adapted to replace existing gas lamp heads, but to utilize the old
gas lamp-post or standard."
My improved lantern may be fixed to the top of the existing lamp-post by
means of an iron band and set bolts or other efficient device, from this band
there passes a suitable number of supports, preferably three, which at their
upward extremities are attached under the bed of an annular tee iron, the cross
part of which is placed outwards to carry a copper spinning or other suitable
decoration, upon the top side of the tee iron fits the base of an opal shade ter-
minating and being secured at its upper extremity under an annular downwardly
projecting flange connected to the top male part of a bayonet joint to be here-
inafter described.
The lead pipe now used in the street lamps may be utilized as a conduit for
the electric wires and at the head of the post is arranged a copper union there-
with and thereafter a copper tube to contain the wires, the said tube passing
upwards and being secured to one of the side supports and continueing under
the opal shade nearly to the top of the lantern where it terminates in the female
part of the bayonet joint already referred to; the lower part of this has secured
to it a coupling suitable for the maxium number of incandescent lamps
required in the lantern, so that any smaller number may be afterwards placed
therein if desired; the lamps are joined to the lower part of this coupling in
any well known manner and in case a different number of lamps is required the
lower part of the coupling is taken off and one substituted containing the
required number of connections.
The electrical appliances, connections and fittings will be of the usual character
as will be readily understood by electrical engineers and fitters.
The copper tube from the union to the summit of the lantern will also play a
considerable part in strengthening the whole.
India rubber rings may be introduced at any suitable points for weathering
purposes and the whole may be ornamented in any desired manner.
Dated this 19th day of March 1898.
W. SWINDELL,
Agent for the Applicant.

page_text: Improvements in and relating to Street Lanterns for the Reception of
Incandescent Electric Lamps.
I, JOHN EDWIN STEWART, of 10, Trowels Lane, in the County Borough of
Derby, Electrical Engineer, 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:-
The object of my invention is to provide a form of street lantern suitable for
the reception of incandescent electric lamps the design of the said lantern being
particularly adapted to replace existing gas lamp heads, but to utilize the old
gas lamp-post or standard.
In describing my invention reference will be had to the accompanying sheet
of drawings upon which Figure 1 is an elevation of my improved lantern and
Figure 2 is a sectional elevation of the same.
My improved lantern may be fixed to the top of the existing lamp-post A by
means of a metal band B and set bolts C or other efficient device, from this
band there passes a suitable number of supports D, D and D', preferably three,
which at their upper extremities are attached under the bed of an annular tee
iron E, the cross part of which is placed outwards to carry a copper spinning F
or other suitable decoration, upon the top side of the tee iron fits the base of an
opal shade G terminating and being secured at its upper extremity under an annular
downwardly projecting flange H connected to the top male (or female) part I of
a bayonet joint to be hereinafter described.
The lead pipe now used in the street lamps may be utilized as a conduit for
the electric wires and at the head of the post is arranged a copper union K there-
with and thereafter a copper tube K¹ to contain the wires, the said tube passing
upwards and being secured to one of the side supports DI and continueing under
the opal shade nearly to the top of the lantern where it terminates in the female
(or male) part L of the bayonet joint already referred to; the lower part of this
has screwed to it a coupling M suitable for the maximum number of incan-
descent lamps required in the lantern, so that any smaller number may be after-
wards placed therein if desired; the lamps are joined to the lower part of this
coupling in any well known manner and in case a different number of lamps is
required the lower part of the coupling is taken off and one substituted contain-
ing the required number of connections.
The electrical appliances, connections and fittings will be of the usual character
as will be readily understood by electrical engineers and fitters.
The copper tube from the union to the summit of the lantern will also play a
considerable part in strengthening the whole.
India rubber rings such as N may be introduced at any suitable points for
weathering purposes and the whole may be ornamented in any desired manner.
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:
The improvements in and relating to street lanterns for the reception of
incandescent electric lamps the said improvements being also adaptable for
replacing existing gas lamp heads and utilizing the old posts, and consisting of
band B fixed to the top of post A and carrying supports 1) attached to ter
iron E, shade G, the latter and a copper tube K¹ being connected to the two
parts of a bayonet joint, said tube being joined to the pipe up the inside of the

page_text: post and containing the electric wires, the lower part of the bayonet joint having
a coupling screwed to it to which are joined the electric lamps substantially as
described and illustrated.
Dated this 19th day of December 1898.
W. SWINDELL,
Imperial Chambers, Albert Street, Derby, Agent for the Applicant.