IMPROVEMENTS IN REFLECTORS FOR LAMPS OR OTHER LIGHTS
Year: 1885

page_text: We, ARTHUR ROLPH BURMAN of 18 Bishop Road and ALLEN SCHOFIELD CAINE
of 13 North John Street both of Liverpool in the County of Lancaster, Gentleman
and General Importer respectively do hereby declare the nature of our said
invention for IMPROVEMENTS IN REFLECTORS FOR LAMPS OR OTHER LIGHTS". to
be as follows:-
"
This Invention has for its object a lamp reflector that shall give a brighter and
better reflection than the ordinary type.
1st. We form our conical reflectors for downcast or one direction reflection of a
series of small planes, not tangential to the general cone as is usual but oblique
and so that a transverse section of the cone shall give a series of zig-zags crossing
the general mean circle of the cone so as to form apices on each side thereof at
each zig-zag and so that the reflection on one plate is reflected onto its neighbour
to a large degree. The same with reflectors of other shapes than a cone, we form
them with alternate ridges and grooves formed of planes meeting each other
oblique to the mean general shape of the reflector.
2nd. We form every alternate plane of looking glass or metallic reflecting
surface, and the remainder of opal glass or other white or very light coloured
reflecting inaterial. The one set of reflectors reflects onto the other and the
reflector sends a bright light down very different from ordinary reflectors.
WM P. THOMPSON & Co.,
Agents for the Applicant,
6, Lord St., Liverpool, and
323, High Holborn, London.

page_text: Improvements in Reflectors for Lamps or other Lights.
We, ARTHUR ROLPH BURMAN of 18, Bishop Road and ALLEN SCHOFIELD CAINE
of 13, North John Street both of Liverpool in the County of Lancaster, Gentleman
and General Importer, respectively do hereby declare the nature of our said
invention for "IMPROVEMENTS IN REFLECTORS FOR LAMPS OR OTHER LIGHTS,"
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 a lamp reflector that shall give a brighter and
better reflection than the ordinary type.
"
We form our conical reflectors for downcast or one direction reflection of a
series of small planes, not in the same plane with the general cone as is usual, but
oblique and so that a transverse section of the general plane of reflection shall give
a series of zig zags crossing the general mean circle of the cone, so as to form
apices on each side thereof at each zig-zag, and so that the 'reflection on one plate.
is reflected on to its neighbour to a large degree. The same with reflectors of
other shapes than a cone, we form them with alternate ridges and grooves formed
of planes meeting each other, oblique to the mean general shape of the reflector.
In the drawings are set forth a few specimens of reflectors, a "flat"
Figure 1. showing the plane general surface broken into parallel ridges of angles
of from 90 to 120 degrees according as a nearer or more distant reflection is
required. These are largely used for reflecting the light descending from above,
in narrow courts, streets, etcetera, onto the ceilings of offices and the like.
curved reflector Figure 2, placed behind a range of lights. A shell reflector,
Figure 3 for a singlo light. A conical downward reflector Figure 4 for a single
lamp or group of lamps. An inverted cone, Figure 5 for reflecting a ring of lights
downward and outward.
one,
A
The two reflecting surfaces could be both of similar material, but we prefer to
form every alternate plane of looking glass, or metallic reflecting surface, and the
remainder of opal glass or other white or very light coloured reflecting material.
The one set of reflectors reflects on to the other and the reflector sends out bright
light very different from ordinary reflectors.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, we declare that what
we claim is
1st. The reflectors for lamps, in which the reflecting surface, instead of being a
curved or flat plane, approximately perpendicular to the bisecting line of the angle
of incidence and of ultimate radiation, is formed of a series of hollows and ridges
formed of reflecting plates placed at a large angle with each other and reflecting a
considerable portion of the incident light on to each other, before it is passed to
surrounding objects.
2nd. The reflecting surfaces formed of two sets of plates alternating with and
I meeting each other in two sets of planes at an angle of from 90 to 130 degrees
with each other, substantially as described.

page_text: 3rd. The reflecting surfaces formed of plates having a mirror reflection alter-
nating with plates having a white reflection; the two being at such angle with
each other as to be able to reflect a large part of the incident light on each other.
4th. A reflector formed partly of mirror surface and partly of opaque white
reflecting surface, placed at such angle with each other with the light and with the
position to be illuminated, that in place of reflecting the light direct on the part to
be illuminated, they shall in great measure reflect it upon each other, and from
them to the place to be illuminated.