Improvements in Mounting Electric Incandescence Lamps for Orchestral Reading, and like purposes.
Year: 1895

page_text: Date of Application, 8th Oct., 1895
Complete Specification Left, 7th July, 1896-Accepted, 19th Sept., 1896
PROVISIONAL SPECIFICATION.
Improvements in Mounting Electric Incandescence Lamps for
Orchestral Reading, and like purposes.
We, WILLIAM CRAWSHAW and HENRY BEVIS, both of No. 71, Queen
Victoria Street, in the City and County of London, Electrical Engineers do
hereby declare the nature of this invention to be as follows:-
Our invention relates to certain improvements in mounting electric incandescence
lamps for orchestral reading or like purposes.
In carrying our invention into effect we employ a tube of cylindrical or polygonal
cross section with closed ends. An orifice formed in one or both of the ends
aforesaid admits an electric conductor or conductors, which is or are coupled
to the terminals of an incandescence electric lamp or lamps placed within
said tube.
The tube itself is mounted upon suitable brackets so that a narrow slit
surmounted by a flat reflector or diverter may concentrate the rays of light in
such a manner as to spread upon a book or the like without interfereing with any
lighting effect upon a stage or in contiguity therewith.
We may so shape the tube, and arrange the angle of the slit and its diverter or
reflector to conform to any conditions of usage without departing from the essential
features of our said invention.
We may, in order to further concentrate the light rays employ an internal, or
an external cylinder or polygon which may be moveable upon a concentric axis,
and thus enlarge, contract, or divert the light rays at the will of the operator.
Dated this 9th day of October 1905
FREDK. WALKER,
73, St. Stephen's Road, Upton Park, London, E.,
Agent for the Applicants.
Improvements in Mounting Electric Incandescence Lamps for
Orchestral Reading, and like purposes.
We, WILLIAM CRAWSHAW, Electrician and HENRY BEVIS, Electrician both
of 69-71 Queen Victoria Street in the City and County of London, 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 mounting electric incandescence
lamps for orchestral reading and like purposes.
In order that our invention may be the better understood we have appended
the accompanying sheet of drawings in which Figure 1 is a front elevation of the
device, and Figure 2 a transverse section, and Figure 3 a longitudinal section
thereof, similar letters of reference indicating corresponding parts throughout the
several views.

page_text: In carrying our invention into effect we employ a tube A of cylindrical or
polygonal cross-section with closed ends a a'. An orifice 6 formed in one or both
of the ends aforesaid admits an electric conductor or conductors c which is or are,
coupled to the terminals of an incandescence electric lamp e placed within said
tube A, and preferably enclosed within an horizontal tube d, attached to the cover a¹
(in the example chosen for illustration) so that said lamp e and its holder may be
firmly supported within the outer tube A.
The tube itself is mounted upon suitable brackets B B¹ so that a narrow slit S
surmounted by a flat reflector or diverter R may concentrate the rays of light
from the lampe in such a manner as to spread upon a book or the like without
interfering with any lighting effect upon a stage, or in contiguity therewith.
A ventilator V is fitted to the tube A, with internal perforations, so that the
interior may be ventilated when in use without dispersion of the light rays in
other than the proper place through the slit S and guided by the reflector R.
We may shape the tube, and arrange the angle of the slit S and its diverter or
reflector R to conform to any conditions of usage without departing from the
essential features of our said invention.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed we declare that what we
claim is :-
First. In mounting incandescence electric lamps for orchestral reading and
like purposes the combination of an outer tube A supported by brackets B B¹,
provided with a slit S and reflector R with an electric lamp e, support d, and
conductor c substantially as herein described and shown by the appended
drawings.
Second. In mounting incandescence electric lamps for orchestral reading and
like purposes, the combination of parts substantially as herein described and for
the purposes set forth.
Deted this 6th day of Tule 1000
FREDK.
WALKER,
73, St. Stephen's Road, Upton Park, E.,
Agent for the Applicants.