Improvements connected with Ships' Lamps and Lanterns.
Year: 1892

page_text: Date of Application, 7th Sept., 1892
Complete Specification Left, 26th May, 1893-Accepted, 1st July, 1893
PROVISIONAL SPECIFICATION.
Improvements connected with Ships' Lamps and Lanterns.
I, ARTHUR CHRISTOPHER DAVEY, of 118 Leadenhall Street, in the City of
London, Merchant, do hereby declare the nature of this invention to be as
follows:-
Heretofore great inconvenience has been experienced with ships' lamps, inasmuch
as the lamp which is destined for use in an anchor lantern cannot be used in a
lantern serving for a mast head lamp, or that a starboard lamp cannot be used in a
lantern destined for a port lamp, or that any lamp cannot be used except in its own
special lantern. It has therefore been necessary to construct each lamp for its own
special purpose which, besides increasing expense leads to much trouble and
annoyance.
Now, the object of my invention is to so construct ships' lamps and lanterns that
the lamp may be used indiscriminately in a lantern which is to be employed as a
must head-lamp, anchor-lamp, port-lamp, or starboard lamp; or, in other words,
that the lamps may be interchangeable.
To this end, the metal cylinder or ring at the upper part of the lamp proper is
provided with a hook (or hooks) or other suitable retaining devices, and the interior
of the lantern is furnished with a correspondingly arranged eye, loop, or socket (or
eyes, loops or sockets) to suit the position of the hook (or hooks) and to allow of
the indiscriminate fitting in of any lamp into any lantern, and this can be readily
effected by causing the hook on the lamp to engage with the eye, loop, or socket.
on the lantern.
The upper part of the lantern is hinged so as to allow of its being turned over to
permit of the lamp being readily dropped into its place.
It will thus be understood that, owing to the simplicity of this arrangement a
great convenience will be effected, as it will be possible for a sailor to take up any
lamp indiscriminately and to place it into any lantern, without fear of his making
a mistake.
Dated this 7th da
L
1000
COMPLETE SPECIFICATION.
Improvements connected with Ships' Lamps and Lanterns.
I, ARTHUR CHRISTOPHER DAVEY, of 118, Leadenhall Street, in the City
of London, Merchant, 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, reference being had to the
accompanying drawings and to the letters and figures marked thereon, that is
to say -
Heretofore great inconvenience has been experienced with ships' lamps inasmuch
as the lamp which is destined for use in an anchor lantern cannot be used in a
lantern serving for a mast head lamp; or that a starboard lamp cannot be used in a
lantern destined for a port lamp; or that any lamp cannot be used except in its
own special lantern. It has therefore been necessary to construct each lamp for

page_text: its own special purpose which, besides increasing expense, leads to much trouble
and annoyance.
Now, the object of my invention is to so construct ships' lamps and lanterns that
the lamp may be used indiscriminately in a lantern which is to be employed as a
mast head lamp, anchor lamp, port lamp, or starboard lamp, or in other words that
the lamps may be interchangeable.
To this end the metal cylinder or ring at the upper part of the lamp proper, is
provided with a hook (or hooks) or other suitable retaining devices, and the interior
of the lantern is furnished with a correspondingly arranged eye, loop, or socket (or
eyes, loops, or sockets) to suit the position of the hook (or hooks) and to allow of
the indiscriminate fitting in of any lamp into any lantern, and this can be readily
effected by causing the hook on the lamp to engage with the eye, loop, or socket
on the lantern.
The cap or cover of the lantern is hinged so as to allow of its being turned over
to permit of the lamp being readily dropped into its place.
In order that my said invention may be readily understood, I proceed to describe
the same fully with reference to the accompanying drawings, in which—
Fig. 1 is a vertical section, partly in elevation, and Fig. 2 a plan, of a port lamp
to which my invention is applied. In Fig. 2 the cap or cover is removed.
Figs. 3 and 4 are similar views showing my invention applied to an anchor lamp.
Figs. 5 and 6 are also similar views showing my invention applied to a masthead
lamp.
Fig. 7 is an elevation of the lamp proper removed from its lantern.
In all the figures, a designates the lamps proper, all of which are circular and
are identical in construction; they are provided with a metal cylinder or ring a¹ to
which is secured by solder; or rivets, a hook a², which may be a spring one.
Within the lanterns b, and at any convenient point therein, I attach by means of
rivets, an eye, loop, or socket b', consisting of a piece of metal bent to the required
shape and adapted to receive the hook a² of any of the lamps a.
The before mentioned eyes, loops or sockets b¹, and the hooks a² on the lamps,
are so arranged that, when any of said lamps are placed in any of the lanterns,
they will occupy their correct position therein, thus bringing the flaine in the centre
of the lens and the reflector. Thus any one of the lamps may be taken up
indiscriminately and be placed into any one of the lanterns without the necessity of
first having to ascertain which lamp belongs to its respective lantern, as was the
case formerly.
I do not limit myself to the exact position of the eyes, loops, or sockets & shown
in the drawings, as they may be situated at any convenient place in the lanterns to
suit requirements, and so long as the proper position of the lamps in the various
lanterns be maintained.
Also, instead of the retaining means above described, I may use a bayonet joint
or other suitable arrangement, and the lamp, instead of being secured at the top,
may be secured at the bottom.
It will thus be understood that owing to the simplicity of this arrangement, a
great convenience will be effected, as it will be possible for a sailor, or other person,
to take up any lamp indiscriminately and to place it into any lantern without fear
of making any mistake.
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. The construction of ships' lamps and lanterns in the manner substantially as
herein described, whereby any lamp may be used indiscriminately with any lantern,
and without fear of mistake, thereby saving time and trouble.
2. In ships lamps and lanterns, the combination with the lamp, of a hook or
retaining device, and with the lantern, of an eye, loop, socket, or the like, said
retaining device being adapted to readily engage with the eye, loop, or socket and

page_text: thus permit the lamps to be applied indiscriminately to either a starboard, port,
masthead, or anchor lantern, substantially as herein described and shown with
reference to the annexed drawings.
3. My improvements connected with ships' lamps and lauterns, substantially as
hereinbefore described and illustrated by the annexed drawings.
Dated this 26th day of May 1893
ERNEST DE PASS,
Chartered Patent Agent,
78, Fleet Street, London, and 6, Victoria Street, Nottingham,
Agent for the Applicant.