Year: 1896

page_text: Date of Application, 21st Oct., 1896
Complete Specification Left, 21st July, 1897-Accepted, 25th Sept., 1897
AUGUSTINE CAMPBELL DAVISON 531 Holloway Road in the County of London
Civil Engineer do hereby declare the nature of this invention to be as follows:-
The object of this invention is to construct a Cycle Lamp in such a way that
more of the light proceeding from the flame may be reflected in the proper direc-
tion than by the usual arrangement of having a small reflector taking in a
rather narrow angle of the rays placed behind the flame, and at the same time to
make the lamp more convenient for cleaning.
To attain this object I make the lamp to consist of two principal parts, the body
and the tank; the tank being attached to the bottom part of the body by a spring
catch or similar means.
Instead of making the body of rectangular or irregular form as is usual I make
it a complete hollow sphere, pierced only by the holes necessary for the admission
of the front reflecting cone or bell, the side glasses, the exit for the smoke at
the top and the entrance for the burner at the bottom, all these holes being
made as small as possible.
The hollow spherical body is made of such diameter and is so placed as to
have the flame practically in its centre of curvature, and is plated and polished
inside so as to act as a complete reflector.
As such a body made in one piece would present great difficulty in cleaning
the lamp I divide it diagonally with respect to the vertical axis of the lamp into
two hemispheres, the line of division being from the top of the back of the
lamp towards the bottom of the front. The back or lower hemisphere is attached
permanently to the spring back and has the detachable tank fastened to it at the
bottom by a catch as before mentioned.
The other or front hemisphere has attached to it the front reflecting cone &
the usual hooded or other arrangement for the exit of smoke.
The two hemispheres are hinged together at their lower edge directly in front of
the tank and are fastened at their upper edge by a catch so that the lamp opens
into two hemispheres easy of access for cleaning etc.
Dated this 20th day of October 1896.

page_text: what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
The object of this invention is to construct a cycle lamp in such a way that
more of the light proceeding from the flame may be reflected in the proper direc-
tion, than by the usual arrangement of having a small reflector taking in a
rather narrow angle of the rays placed behind the flame, and at the same time to
make the lamp more convenient for cleaning.
To attain this object I make the lamp to consist of two principal parts, the body
and the tank, the tank being attached to the bottom part of the body by a spring
catch or similar means.
Instead of making the body rectangular or irregular form as is usual I make
it a complete hollow sphere pierced only by the holes necessary for the admission
of the front reflecting cone or bell, the side glasses, the exit for the smoke at
the top, and the entrance for the burner at the bottom, all these holes being
made as small as possible.
The hollow spherical body is made of such diameter and is so placed as to
have the flame practically in its centre of curvature, and is plated and polished
inside so as to act as a complete reflector. As such a body made in one piece
would present great difficulty in cleaning the lamp, I divide it diagonally with
respect to the vertical axis of the lamp into two hemispheres, the line of division
being from the top of the back of the lamp to the bottom of the front.
The back or lower hemisphere is attached to the spring back and has the
detachable tank fastened to it at the bottom by a catch as before mentioned.
The other or front hemisphere has attached to it the front reflecting cone and
the usual hooded or other arrangement for the exit of smoke.
The two hemispheres are hinged together at one edge and are fastened at the
opposite edge by a catch, so that the lamp opens into two hemispheres easy of
access for cleaning.
to.
In the accompanying sheet of explanatory drawings to be hereinafter referred
Figure one is a side elevation and Figure a sectional plan, on the line a b
Figure 1, illustrating my improved lamp.
As illustrated in Figure 1 the body part A is shown detached from the tank
rart B; such part I secure together for service by a spring catch such as C or
by other suitable means. The hollow sphere forming the body part A is divided
diagonally into two sub-parts as illustrated, and such sub-parts, which are hinged
together at the upper end are secured at the lower end by a suitable catch or
fastening device. On the release of such catch or fastening the fore part of the
body can be turned back on the hinged joint, as indicated by dotted lines at
Figure 1, thus permitting of ready access to the interior of the whole body for
cleaning or other purposes.
Instead of hinging the sub-parts of the body at the upper end as hereinbefore
described, I sometimes form the joint at the lower end and arrange the locking
or fastening device at the upper end or at the side of the diagonal division, and
I make other modifications in the details of lamps constructed in accordance
with my 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:-
1. A cycle lamp constructed substantially as and for the purposes described
and as illustrated.
2. In cycle lamps, the combination comprising a detachable tank and a
diagonally divided spherical body part formed by two sub-parts having a hinged
or pivot connection, one such sub-part being attached with the spring back, whilst

page_text: the other is in attachment with the conical front of the lamp and with its hood
or top, substantially as described and as illustrated.
Dated this 20th day of July 1997
MARKS & CLERK,
18 Southampton Buildings, London, W.C., and
13 Temple Street, Birmingham, Agents for the Applicant.