Year: 1887

page_text: Date of Application, 27th Apr., 188?
Complete Left, 24th Jan., 1888
Complete Accepted, 24th Feb., 1888
1 ALBERT MARCILIIACY of No. 30 Rue St. Petersburg Paris in the Republic of
France Mechanic do hereby declare the nature of this invention to be as follows:-
This invention relates to the application of electrical glow lamps to the helmets of
divers.
For this purpose the bulls-eye in the top of the helmet is removed and is replaced
by a lantern having a disc shaped base formed with a screw thread, which is screwed
into the opening of the helmet from which the bulls-eye was removed, the disc being
formed with a cavity on its outer side for the reception of the base of the electric
lamp, which may be of any suitable known construction. The poles of the lamp
are connected to wires passing up through the base and carrying contact screws
above the same, to which are connected the terminals of the flexible electrical
conductors. Upon a projecting screwed rim on the outer face of the disc shaped base
of the lantern is screwed the cylindrical lower end or neck of the lantern casing,
suitable packing being provided for making the joint watertight; the lantern casing
is also by preference of a horizontal cylindrical shape, the one end having screwed
into it a circular frame carrying the glass or bulls-eye of the lantern while the other
end is closed by a concave cap that serves as reflector, or a second bulls-eye may be
employed in lieu of this. In the cylindrical neck of the lamp are provided two
stuffing boxes through which pass the before mentioned conductors that are led up to
the electrical generator above.
For protecting the head of the diver from the heat of the lamp a sheet of caoutchouc
or other bad conductor of heat may be fixed in the top of the helmet.
When the lamp is not required, it is unscrewed from the helmet and replaced by
the ordinary bulls-eye.
Dated this 27th day of April 1887.
ABEL & IMRAY,
Agents for the Applicant.

page_text: I, ALBERT MARCILHAGY of No. 30 Rue St. Petersburg, Paris in the Republic of
France, Mechanic 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:-
:-
This invention relates to the application of electrical glow lamps to the helmets of
divers.
For this purpose the bulis-eye in the top of the helmet is removed and replaced by
lantern having a disc shaped base formed with a screw thread, which is screwed into
the opening of the helmet from which the bulls-eye was removed, the dise being
formed with a cavity on its outer side for the reception of tho base of the electric
lamp, which
may be of any suitable known construction. The poles of the lamp are
connected to wires passing up through the base and carrying contact screws above
the same, to which are connected the terminals of the flexible electrical conductors.
Upon a projecting screwed rim on the outer face of the disc shaped base of the
lantern is screwed the cylindrical lower end of the lantern casing, suitable packing
being provided for making the joint watertight; the lantern casing is also by
preference of a horizontal cylindrical shape, the one end having screwed into it a
circular frame carrying the glass or bulls eye of the lantern, while the other end is
closed by a concave cap that serves as reflector, or a second bulls eye may be employed
in lieu of this. In the cylindrical neck of the lamp are provided two stuffing boxes
through which pass the before mentioned conductors that are led up to the electrical
generator above.
For protecting the head of the diver from the heat of the lamp a sheet of caoutchouc
or other bad conductor of heat may be fixed in the top of the helmet.
When the lamp is not required it is unscrowed from the helmet and replaced by the
ordinary bulls eye.
Figs. 1 and 2 of the accompanying drawing shew respectively a front view and a
side view of a divers helmet with an electric glow lamp attached to it according to
my above described invention.
Figs. 3 and 4 shew to a larger scale sections at right angles to each other of the
lamp and its casing.
The ordinary bulls eye A of the belmet, shewn at Fig. 5 is unscrewed and in its
place is screwed the lantern, which consists of a screwed disc B, which replaces the
bulls eye and has a central cavity O forming a socket for the reception of the lantern.
This has at bottom a boss C of wood or other suitable material, formed to fit the
socket O and forining itself the socket for the reception of the glow lamp L.
The current is conveyed to the filament by wires a a having screw terminals to
which are connected the flexible conductors 6 b, which pass out of the lantern D through
stuffing boxes which make a water tight joint, this being further secured by winding
a caoutchouc band round it as shewn on the left hand side of Fig. 3.

page_text: The front of the lantern is closed by a screwed bulls eye E, the back being
closed either by another bulls eye or by a metallic dise as shown. The lantern may
either be cylindrical as shewn or it may have any other suitable form.
For protecting the head of the diver from the heat of the lamp, a disc of caoutchouc
or other material may be placed beneath the disc B.. When not required for use
the lantern can be unscrewed and replaced by the bulls eye A.
Having now particularly described and ascertained the nature of this invon-
tion and in what manner the same is to be performed I declare that what 1
claim is :-
:―
The combination with à divers helmet of an electric glow lamp enclosed in a
casing or lantern which is screwed on to the helmet in the place of the top bulls
eye, and arranged substantially as herein described with reference to the drawings.
Dated this 24th day of January 1888
ABEL & IMRAY,
Agents for the Applicant.