Improvements in Apparatus Used as Brackets or Chandeliers for Electric Light.
Year: 1894

page_text: Date of Application, 2nd May, 1894
Complete Specification Left, 1st Sept., 1894-Accepted, 13th Oct., 1894
PROVISIONAL SPECIFICATION.
Improvements in Apparatus Used as Brackets or Chandeliers for
Electric Light.
ROBERT NEVILLE GRENVILLE Engineer Butleigh Court, Glastonbury,
Somerset, STEPHEN HARDING TERRY Civil Engineer 17, Victoria Street,
Westminster S.W., do hereby declare the nature of this invention to be as
follows:-
:-
This invention has for its object the provision of a flexible support to an electric,
lamp or lamps so that it may be raised or lowered or turned in any direction as
occasion may require.
This we attain by the use of a flexible metallic tube, or tubes of other material
of a flexible yet self sustaining character.
The wires forming the leads can pass down the centre (which we prefer), or the
wires can be outside either coiled or not, or the tube itself (when of metal) can be
arranged to form part of the circuit, or if the flexible tube be made of vulcanite or
kindred material the wires can be imbedded in its substance or the outward lead
may be embedded & insulated by one spiral of the tube whilst the return lead is in
the other portion or vice versa, or one lead may be embedded whilst the other is in
a separate wire as described.
lot Mov 1801
STEPHEN HARDING TERRY.
R. NEVILLE GRENVILLE.
COMPLETE SPECIFICATION.
Improvements in Apparatus Used as Brackets or Chandeliers for
Electric Light.
We, ROBERT NEVILLE GRENVILLE, of Butleigh Court, Glastonbury, in the
County of Somerset, Engineer, and STEPHEN HARDING TERRY, of 17, Victoria
Street, Westminster, in the County of London, Civil 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 :-
This invention has for its object the provision of a flexible support to an electric
lamp or lamps so that such may be raised or lowered or turned in any direction as
occasion may require.
This we attain by the use of a flexible metallic tube, or of other material of a
Hexible yet self-sustaining character, the wires forming the leads being suitably
arranged as hereinafter shown.
We will refer to the accompanying drawing in further explanation of our
improvements.
Fig. 1 represents in elevation a length of flexible metallic tubing F made of
sufficient self-stability, stiffness, or rigidity to maintain any position in which it
may be placed, as shown for example by the dotted lines. This support is shown
fixed as a wall bracket and carrying the glow lamp L at its outer end. The main
leads P. N. are suitably insulated and simply passed along within the tube to the
lamp terminals.
Fig. 2 represents part of a lamp support made of a tube or rod of vulcauite or
other insulating, flexible, and sufficiently rigid material F, the wires.P. N. being

page_text: wound alternately in separately spiral grooves formed in the outer surface, and
prevented from contact by the intervening material; or two or more tubes or rods
of the insulating material may be twisted together like a rope and the wires laid in
the grooves so formed, as in Fig. 3; or the wires P. N. may be laid straight and
embedded in the exterior of the material F as in the cross-section, Fig. 4; or they
may be internally embedded in the substance of the material F as in the cross-
section, Fig. 5; or one may be exteriorly wound or laid and the other passed
through the tube F or internally embedded in the substance thereof as in Fig. 6;
or the tube itself when of metal may be arranged to form one part P of the circuit
and the wire N the other part, as in Fig. 7; or the wires may be arranged in any
practical way, due regard being always had to proper insulation. By this means
the lamp may be placed in any desired position and will there remain.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is -
The use for brackets or chandeliers for electric light of flexible supports made of
metallic or built-up tubing, or of vulcanite or other suitable insulating material of
sufficiently flexible and self-sustaining character, to take and maintain any given
position, the lamp circuit being arranged substantially as hereinbefore described
and illustrated in the drawing
Dated this 1st day of September 1894.
For the Applicants,
J. C. CHAPMAN,
70, Chancery Lane, London, W.C., Chartered Patent Agent.