An Improved Lamp Reflector.
Year: 1894

page_text: Date of Application, 26th Nov., 1894
Complete Specification Left, 23rd Aug., 1895-Accepted, 23rd Nov., 1895
I WILLIAM OLIVER ROGERS of 14 Munster Square Regent's Park N.W.
Electrical Engineer do hereby declare the nature of this invention to be as
follows:-
An improved construction of ventilated lamp reflectors to be used with electric
gas or oil lamps or lights.
This invention is adapted more particularly for use in lighting shop & stained
glass windows pictures or any other article which requires perfect rays of light
with no bright points on the said article.
One form of my said improved ventilated reflector takes the form of a truncated
pyramid but with no angles or reflecting surfaces meeting but with small spaces at
each angle to form with the hip piece a ventilating conductor for the air warmed
by the light to escape & to prevent the present blackening & breaking of the
reflecting surfaces in existing reflectors.
My invention is the application of ventilating conductors to electric & other
lamp reflectors by forming hollow hips, ridges &c. in connection therewith
& without any bright points of light.
Dated this 23rd day November 1894.
WILLIAM OLIVER ROGERS.
An Improved Lamp Reflector.
I WILLIAM OLIVER ROGERS of St. Mary's House Wych Street Strand
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:―
This invention is an improved construction of ventilated lamp reflector to be
used with electric gas or oil lamps or lights. I will describe the invention by
referring to the accompanying drawing on which
Fig. 1 is half elevation and half section of a reflector of improved construction
showing this invention adapted to reflectors for electric and other lights.
"
Fig. 2 is a half plan of the outside and a half plan of the inside of the same
showing how the invention can be applied to octagon or other polygonal shaped
reflectors, the arrows indicating the course the air warmed by the lamp or light is
conducted from the inside of the reflector.
Fig. 3 is a half elevation and half section.
Fig. 4 is a half plan of inside and half plan outside of another form to which
this invention is applicable.
The foregoing improved reflectors are more particularly suitable for internal use
in houses windows &c.
Fig. 5 is half front and half back elevations, and Fig. 6 is half plan of top and
half horizontal section and Figure 7 is a vertical section of another form of lamp,
to which my invention can be adapted for use in exterior lighting, or, where the
[Price 8d.]

page_text: reflector is exposed to the weather outside of shops, stained glass or other windows
& the like.
The same reference letters indicate similar or corresponding parts, in all the
figures of the drawing, & the lined or shaded parts indicate internal portions of
reflectors.
One form to which the improved ventilating principle can be applied, is shown
by Figures 1 and 2 octagonal A or any other polygonal prymidal form. A has 8
channels or conductors a to as from the open base up to the apex of pyramid. Bis
a plate which forms part of the holder-carrier and prevents the light piercing thro'
the vent holes DD and an air-chamber collecting the various channels together and
discharging thro' the aforesaid vents D D, so that a constant current of air is
passing through the reflector, and in no part can any air remain stagnant and get
over-heated, which would be the case if no channels or conductors were formed or
provided as herein set forth.
The reflector may have longer, shorter, wider, narrower, or any number or shape
of hips or open conducting channels other than are shown in the drawing the
construction of which is more clearly shown in enlarged (Fig. 1A) section of
the hips.
In adapting this invention to the truncated form shown in Figs 3 and 4, the tube C.
is a circular chamber conducting the heated air to the vent holes D. D. and preventing
the light piercing thro' the same.
Fig. 5. is half front, and half back elevation.
Fig. 6. is half plan and half horizontal section.
Fig. 7. is a vertical section.
Fig. 7 an enlarged diagram of the hips and conductors of another form to
which the invention is applicable for external use.
The hips being formed as before described but being pierced with vent
holes E. E. E. which conducts the air into the chambers formed between the glass or
other reflecting surface and the exterior cover on all sides and thence to the vent
holes shown on the front edges of elevation or thro' the alternative extract or
outlet shown dotted on external parts of the Figs. 5. 6. 7.
I have found the conductors or hips applied to the forms shown on the drawing
to answer well in every day use, but, it will be evident, that the channels or
conductors may be enlarged or reduced, bent or shaped or the ventilating principle
applied to other forms without departing from my said invention.
Having now particularly described the nature of my said invention, and the
manner in which the same can be used, I declare that what I claim is :-
An improved construction of reflectors for electric or other lamps or lights,
herein before described, with reference to the accompanying drawing, the said
ventilating conductors being in the form of hollow-hips, ridges, channels, and
collecting chambers, or hollow hips and channels combined with collecting chambers
and vent holes, for the conduction and discharge of the heated air from the reflectors
as herein before set forth to prevent the blackening and cracking and to reduce
the heating of the reflecting surfaces by the electric lamps or other lights.
Dated this 22nd day of August 1895.
JAS. W. HALL,
Agent for the Applicant.