Improvements in Holders for Incandescence Electric Lamps, for Stage and like Purposes.
Year: 1895

page_text: PROVISIONAL SPECIFICATION.
Improvements in Holders for Incandescence Electric Lamps, for
Stage and like Purposes.
We, GEORGE LYONS of the Savoy Theatre, Strand, in the County of London
Electrician and HENRY BEVIS of 69-71 Queen Victoria Street, in the City and
County of London Electrician, do hereby declare the nature of this invention to be
as follows:-
Our invention relates to certain improvements in holders for incandescence
electric lamps, and has for its objects the better adaptation of these to stage and
like purposes, and also the combination of two lamps upon a single holder.
In carrying our invention into effect we employ a base of insulating material, of
circular or polygonal cross-section and made in two or more parts attached by
screwing or other equivalent means. At each end is fitted a holder for incan-
descence lamps of any suitable type, but preferably a socket with spring plunger
contacts and bayonet catches, or screw coupling. The connections from the +
and
terminals of each lamp are common to both, and a forked bar extends from
the centre or approximately thereto, of the insulating base, upon opposite sides, and
is fitted with screw or other clamping appliances for attachment to the conductors
forming the circuit.
-
By the use of the device according to our invention, two lamps may be attached
to a single holder, and may be easily and rapidly moved from one part of a
temporary or fixed electrical circuit to another, which is required in the case of the
adaptation of the electric light to stage purposes or for scenic effects.
Dated this 21st day of March 1895.
FREDK. WALKER,
73 St. Stephen's Road, Upton Park, London, E.,
Agent for the Applicants.
Improvements in Holders for Incandescence Electric Lamps, for
Stage and like Purposes.
We, GEORGE LYONS of the Savoy Theatre, Strand, in the County of London,
Electrician and HENRY BEVIS of 69-71 Queen Victoria Street, in the City and
County of London, Electrician, 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 relates to certain improvements in holders for incandescence
electric lamps, and has for its objects the better adaptation of these to stage and
like purposes, and also the combination of two lamps upon a single holder.
In order that our invention should be the better understood we have appended
the accompanying sheet of drawings in which
Figure 1 is an external elevation of a double socket, and Figure 2 a plan view
of same.

page_text: Figure 3 is a sectional elevation of a single clip socket or may be one half of the
double socket shown by Figure 1, and
Figure 4 is an exterior elevation of a single socket with lugs in lieu of clips.
Similar letters of reference indicate corresponding parts throughout the several
views.
In carrying our invention into effect we employ a base a Figures 1, 2, 3, & 4, of
any suitable insulating material preferably stone-ware or vitrite.
This may be of any suitable cross section, and is formed of two distinct parts a a¹
in the case of the double socketed holder Figure 1, which are connected by means
of screwed extensions ff¹ of the connecting pillars e el Figure 3, or by means of a
screwed periphery, may be joined independently of the connections altogether.
At each end is fitted a bayonet socket, or other lamp holder A A¹ with spring,
plunger, screw, or other contacts. The connections from the + and terminals
of each lamp are common to both lamps, and the separate screw clips b b¹, or single
lug bb Figure 4.
-
The screw clips hereinbefore referred to consist in two forked bars, b¹ forming
a clip, which may be tightened upon the two strained conductors forming
the + and of the circuit by means of screws c c¹. A projection g upon the
base a effectually divides and insulates the two connectors or clips bb.
The object of our said invention is thus carried out, and two incandescence lamps
may be carried by a single holder, and may be rapidly and easily moved from
one part of a temporary or fixed electrical circuit to another, which is an essential
feature in stage electric lighting, and like purposes. A single holder constructed
as shown by Figure 4, in which the lugs or tongues are intended to be gripped
by or to the conductors, may be duplicated in the same manner as Figure 3, which
when made up as shown by Figure 4, supports two incandescence lamps. We do
not confine ourselves to any especial form of lamp stalk or holder A, nor the actual
connections therefor which are used to put the lamp into circuit, although we use
preferably the type shown by the drawings and herein described the essential
feature of our said invention being the general construction of the parts for the
purpose specified.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed we declare that what we
claim is :-
First. In holders for incandescence electric lamps, the employment and construc-
tion of the several parts as and for the purposes specified and substantially as
herein described with reference to the drawings.
Second. In holders for incandescence electric lamps, the combination of two
screw clips & having connecting pillars e e¹ and screwed extension ff with an
insulating base a to which is attached a lamp holder A. substantially as herein
described and shown by Figure 3 of the appended drawings.
Third. In holders for incandescence electric lamps the combination of two
separate parts with single clips or lugs as shown by Figure 1, holding two lamps
with a single connection substantially as herein described with reference to the
appended drawings.
Fourth. In holders for incandescence electric lamps the substitution of lugs b bl
Figure 4 for clips, applicable to single or double sockets substantially as and for
the purposes herein described, and shown by the drawings.
FREDK. WALKER,
Registered Patent Agent, 88 Queen Victoria Street, London, E.C.,
Agent for the Applicants.