Improvements relating to Street Lighting and other Lamps.
Year: 1896

page_text: Date of Application, 4th Jan., 1896
Complete Specification Left, 5th Oct., 1896-Accepted, 14th Nov., 1896
PROVISIONAL SPECIFICATION.
Improvements relating to Street Lighting and other Lamps.
We, Captain Sir ALFRED JOHN LOFTUS, Phrá Nidesa Jalahide, K.C.C.S.,
of 6, Grosvenor Road, Handsworth, in the County of Stafford, Retired Hydro-
grapher from the Siamese Government Service, and EDWARD ROWLANDS, of
41, Temple Row, in the City of Birmingham, Solicitor, do hereby declare the
nature of this invention to be as follows:-
This invention relates to the manner in which we form the glass or like fronts,
sides, and roofs of lamps for street lighting and other services, our object being to
obtain a more effective distribution of the light from the interior of the lamp.
In the application of our invention to the construction of a street lamp, we make
the metal top or crown of the lantern or lamp frame to any required design. The
top or crown is connected with the lower part or base of the lantern or frame by
curved metal strips which serve also for the attachment of the glass panes in the
ordinary manner.
We produce each of the glass panes for the front, sides, or roof of the lantern,
from a circular sheet of glass which we form as lens with a curve such as described in
the Specifications Nos. 20023 of 1889 and 14034 of 1891, on which Letters Patent
have been granted to the first named applicant. From this circular lens we cut
out a pane of glass of a square, rectangular, or other required configuration, making
its edges suitable for butting against the edges of the adjacent pane. The panes
are secured at their abutting edges by means of the curved metal strips herein-
before described. In this manner we construct a lantern having panes or glass
fronts with their entire surfaces formed as a lens and thus any light which does not
pass through the glass is reflected back from the curved surface and transmitted
through the opposite side of the lantern.
Instead of glass we sometimes employ opal or other like material for the
production of our improved lantern panes, using them either separately or in
conjunction with glass panes. In all cases the panes are preferably of even
thickness throughout and their surfaces parallel with each other.
The application of our invention to carriage lamps and to the construction of
lanterns for varying purposes differs only in the particular arrangement of the
parts to suit the required service, from its application to the construction of a street
lamp as hereinbefore described.
Dated this 3rd day of January 1896
MARKS & CLERK,
18 Southampton Buildings, London, W.C., and
13 Temple Street, Birmingham, Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements relating to Street Lighting and other Lamps.
We, Captain Sir ALFRED JOHN LOFTUS, Phrá Nidesa Jalahide, K.C.C.S.
6 Grosvenor Road, Handsworth, in the County of Stafford, Retired Hydro-
grapher, from the Siamese Government Service, and EDWARD ROWLANDS of
41 Temple Row, in the City of Birmingham, Solicitor, do hereby declare the
D
Improvements relating to Street Lighting and other Lamps.
We, Captain Sir ALFRED JOHN LOFTUS, Phrá Nidesa Jalahide, K.C.C.S.
6 Grosvenor Road, Handsworth, in the County of Stafford, Retired Hydro-
grapher, from the Siamese Government Service, and EDWARD ROWLANDS of
41 Temple Row, in the City of Birmingham, Solicitor, do hereby declare the
D

page_text: 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 relates to the manner in which we form the panes or glass fronts
of lamps for street lighting and other services, our object being to obtain a mire
effective distribution of the light from the interior of the lamp.
In the accompanying sheet of explanatory drawings to be hereinafter referred to.-
Figure 1 is an elevation representing a street lamp constructed in accordance
with our invention.
Figure 2 is a sectional plan of the lamp.
Figure 3 represents a modified form of crown or lamp head.
In the application of our invention to the construction of a street lamp, we make
the metal top or crown A of the lantern or lamp frame to any required design.
The top or crown is connected with the lower part or base B of the lantern or
frame by curved metal strips such as C which serve also for the attachment of the
glass panes in the ordinary manner.
We produce each of the panes such as D from a circular sheet of glass which
we form as a lens with a curve such as described in the Specifications Nos. 20023
of 1889 and 14034 of 1891, on which Letters Patent have been granted to the first
named applicant. From this circular lens we cut out a pane of glass of a square,
rectangular, or other required configuration, making its edges suitable for fitting
within or against the metal strips C. The panes are secured at their edges
preferably by means of clip pieces such as E attached to the strips C. In this
manner we construct a lantern in which the entire surface of each paue or glass
front is formed as a lens and thus any light which does not pass through the glass
is reflected back from the curved surface and transmitted through the opposite side
of the lantern.
On the exterior of the lantern we form the reflecting rim F fitted with opal,
bright metal, or other substance for reflecting the light to the ground.
We sometimes construct our improved panes from opal, metal, or other reflecting
In all
material, and use the same in a lantern in conjunction with glass panes.
cases the panes are preferably of even thickness throughout and their surfaces
parallel with each other.
The application of our invention to carriage lamps and to the construction of
lanterns for varying purposes differs only in the particular arrangement of the
parts to suit the required service, from its application to the construction of a street
lamp as herein before described.
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 ;-
1. The construction of lanterns for street lighting and other purposes in wbich
the entire surface of each pane or glass front is formed as a lens substantially as
and for the purpose described.
2. An improved street lamp baving the entire surface of each pane or glass
front formed as a lens and provided with an external rim reflector substantially as
described and as illustrated.
3. The improved general construction and arrangement of lamps or lanterns for
street lighting and other services substantially as described.
Dad his 2nd day of Datoior 1896
MARKS & CLERK,
18 Southampton Buildings, London, W.C., and
13 Temple Street, Birmingham, Agents for the Applicants.