An Improved Reflector for Electric Glow Lamps.
Year: 1896

page_text: Date of Application, 4th Jan., 1896-Accepted, 8th Feb., 1896
COMPLETE SPECIFICATION.
An Improved Reflector for Electric Glow Lamps.
I, HENRY NIELD BICKERTON, of 6 Richmond Street, Ashton-under-Lyne, Gas
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 improvements relate to reflectors for electric glow lamps, and have for
object the formation of a simple reflector which may be readily attached and held
in position upon the stem or shank carrying the bulb containing the incandescent
filament.
To accomplish this and to effect my improvements, I prepare a disc of polished
metal or other substance, having a silvered or other bright surface capable of
reflecting light. This disc has an opening in the centre, of such a form as will
enable it to slide on the shank or stem of the bulb forming the glow lamp, and is
provided with three or more projections, or it may be with a projecting rin, for
holding the same securely in the required position.
This disc may be either flat, concave, or even somewhat convex, according to the
extent and direction it is desired to reflect the light, and is preferably of such a
size as will enable it to be contained within the usual outer lamp shade. By which
means an effective and cheap reflector may be produced, which may be readily
attached to and detached from the shank or stem of an incandescent electric lamp.
But that the improvements may be better understood, I will, with the aid of the
accompanying drawings, proceed more fully to describe means employed by me.
DESCRIPTION OF DRAWINGS.
Fig. 1 shows a perspective view of an electric incandescent lamp and shade,
fitted with a reflector arranged in accordance with one form of my improvements;
while
Figs. 2 and 3 show plan views of reflectors alone, of two different forms.
The same letters indicate corresponding parts wherever they occur.
a is the glow lamp having the stem a fitted by bayonet joint into the con-
nection carrying the lamp shade c in the customary manner, as will be well
understood.
d is the reflector which in this case is formed with the projections d'; which,
being turned up, act as spring clips or steadying supports, to keep the reflector in
its proper position.
In the case of Fig. 3, the rim answers the same purpose. In those cases where
the bayonet joint is employed as shown, openings are made in the disc, or disc
and rim, to enable the same to pass the pin e forming portion of such joint; but in
those cases where a screw joint is employed, such openings are unnecessary.
Variations in detail, such as the size, thickness, and material, and surface
preparation of the discs, together with the length and form of the projections or
rim therefrom, and the mode of constructing the same, may be made without
departing from the peculiar character of the invention.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
A reflector for incandescent glow lamps formed with projecting portions or a

page_text: rim capable of attachment to the shank or stem of such glow lamps, for the purpose
and in manner substantially as herein shown and described.
Dated this 2nd day of January 1896.
WILLIAM GADD, C.E.,
64 Barton Arcade, Manchester, Agent.