Improvements in the Method of Attaching Reflectors to Electric Lamp-holders or Sockets.
Year: 1893

page_text: Date of Application, 8th Dec., 1893
Complete Specification Left, 6th Sept., 1894-Accepted, 20th Oct., 1894
.
PROVISIONAL SPECIFICATION.
Improvements in the Method of Attaching Reflectors to Electric
Lamp-holders or Sockets.
We, PERCY GARNISS EBBUTT and JOHN BENJAMIN VERITY, both of Plume
Works, Aston, Warwickshire, Electrical Engineers do hereby declare the nature
of this invention to be as follows :-
This invention consists of the herein described improvements in the method of
attaching metal or other reflectors to the sockets or holders of incandescent electric
lamps or lights. The object of the invention is to provide a means whereby
reflectors may be so fixed that the electric lamp may be placed in the apex of the
reflector, so that the whole of the lamp & nothing but the lamp may be reflected,
instead of, as is usually the case, the lamp being an inch or more from the apex of
the reflector, whereby much of the light is lost & part of the lamp-holder or
socket is reflected on the surface of the reflector, which is an objection.
In carrying out our invention we provide a reflector, which may be of any
suitable shape having a hole in the centre large enough to clear the neck of the
electric lamp, & from this hole we lead a tube above the reflector of the requisite
length & diameter screwed at the top on the inside with a female screw, which
screws upon the screwed tube of the ordinary lamp-holder or socket, & thereby
holds the reflector firmly & in the best position to reflect most light.
In most reflectors as now made, the method of carrying them does not allow
them to come to the bottom of the lamp-holder or socket, but only near the top,
& this defect it is the object of our invention to overcome, as described.
This method of attaching reflectors is suitable for either metal or glass
reflectors, & for reflectors used alone or in conjunction with glass or other shades.
Dated this 6th day of December 1893.
COMPLETE SPECIFICATION.
Improvements in the Method of Attaching Reflectors to Electric
Lamp-holders or Sockets.
We, PERCY GARNISS EBBUTT and JOHN BENJAMIN VERITY, Electrical
Engineers, both of Plume Works, Aston, in the County of Warwickshire, 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 consists of the herein described improvements in the method of
attaching metal or other reflectors to the sockets or holders of incandescent electric
lamps or lights.
The object of the invention is to provide a means whereby reflectors may be so
fixed that the electric lamps may be placed in the apex of the reflector so that
the whole of the lamp and nothing but the lamp may be reflected, instead of, as is
usually the case, the lamp being an inch or more from the apex of the reflector,
whereby much of the light is lost and part of the lampholder or socket is reflected
on the surface of the reflector, which is an objection.

page_text: In carrying out our invention we provide a reflector, which may be of any
suitable shape, or material, having a hole in the centre large enough to clear the
neck of the electric lamp and from this hole we lead a tube above the reflector of
the requisite length and diameter screwed at the top on the inside with a female
screw which screws upon the screwed tube of an ordinary lampholder or socket and
thereby holds the reflector firmly and in the best position to reflect most light.
In most reflectors as now made the method of carrying them does not allow
them to come to the bottom of the lampholder or socket, but only near the top,
and this defect it is the object of our invention to overcome as hereinafter
described.
This method of attaching reflectors or shades is suitable for either metal or glass
or other reflectors or shades and for reflectors used alone or in conjunction with
glass or other shades.
We will describe our invention by referring to the accompanying drawing on
which
Fig. 1.is a side elevation; Fig. 2 is a plan and Fig. 3 is a section of a reflector
and tube arranged according to our invention;
Fig. 4 is a drawing of a reflector attached to a standard lampholder in the
manner described, and is half in section and half in elevation ;
Fig. 5 is an elevation and section and Fig. 6 is a plan of another form of
reflector arranged in the same manner and suitable for use in conjunction with
glass or other shades; Fig. 7 shows this latter form of reflector attached to a
lampholder and applied to a glass shade, and is partly in section & partly in
elevation.
The same letters of reference indicate the same or corresponding parts in all the
figures of the drawing.
A is the reflector, which may be of silvered copper, silvered glass, enamelled
iron, opal, or other suitable material. B is a tube which is attached to A by
soldering, brazing, spinning, or other convenient method or methods, and is provided
with a female screw or thread at the upper end as indicated at C, in order that it
may be fitted on to and carried by the male thread D on the lampholder E. F is a
glass shade. G is an incandescent lamp.
Fig. 8 shows the invention as adapted to silk or other shades, and is shown part
in elevation & part in section.
A is the wire frame to be covered with silk or other material attached to the
tube B which is either rolled out bell shaped at its lower end or has a flange
added to it according to requirements and is attached to the lampholder E by the
screwed thread C¹ as already described.
Fig. 9 shows the invention also as adapted to silk or other shades and is shown
part in elevation & part in section.
A is the wire frame to be covered with silk or other material attached to the
collar B2 which is attached to the lampholder by the screwed thread C² as already
described.
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 :-
The use of a tube, ring, or collar, screwed on the inside with a female screw to
correspond with the male screw on the outside of an electric lampholder or socket
in conjunction with a reflector or shade, or both.
Dated this 2nd day of September 1894.
PERCY GARNISS EBBUTT.
JOHN BENJAMIN VERITY..