Improved Lantern.
Year: 1891

page_text: Date of Application, 1st June, 1891
Complete Specification Left, 1st Mar., 1892-Accepted, 28th May, 1892
PROVISIONAL SPECIFICATION.
Improved Lantern.
:-
I, ANDREAS SÖHNER of Friedrichstrasse, Berlin in the German Empire
Manufacturer, do hereby declare the nature of this invention to be as follows:-
My invention consists in a hand lantern suitable for oil or candles and specially
useful for signalling and like purposes, being so constructed as to fold up into a
very small compass when not in use. The oil reservoir is in the form of a tube
hinged to the back beside the handle, the wick being held in a pipe passing through
an opening into the centre. The candle holder of telescopic form is fixed in the
bottom plate and may be raised or lowered to maintain the candle at any desired
height. The top and base plates are flat, but the sides are convex on the exterior
and fastened together by hinges. The chimney is constructed also of telescopic
form and has openings around it through which the draught may rotate a small fan
to assist removal of products of combustion. To admit fresh air holes are provided
at or near the bottom. The transparent front plate is provided with an arrange-
ment of shutters, to be opened or closed according as the light is to be shown or
obscured. When the lantern is to be packed for transport or is not in use, the top
and bottom as well as the convex sides are folded together and then occupy little
space."
1
T
1001
BONNE & Co.,
57, Chancery Lane, London, Agents for Applicant.
COMPLETE SPECIFICATION.
Improved Lantern.
I ANDREAS SÖHNER of Friedrichstrasse 214 Berlin in the German Empire
Manufacturer 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:-
My invention consists in a hand lantern suitable for oil or candles and specially
useful for signalling and like purposes being so constructed as to fold up into a very
small compass when not in use.
In the accompanying drawing
Fig. represents the lantern entirely unfolded a being the front c the back band
'the two sides (with d and d'exterior flaps serving as reflectors and fixed to
sides and respectively by hinges 62) bottom e with false (double) bottom e' &
candle holder and cover with cowl k.
Fig. 2 is a side view of the lantern ready for use.
Fig. 3 is a ground plan of the lantern ready for use.
Fig. 4 is a ground plan of the lantern folded to its smallest compass.
Both candle holder g and cowl & are telescopically arranged so as to occupy as
little space as possible and in the case of candle holder g so as to enable the flame
to be raised gradually, as the candle burns low, so as always to be opposite a
coloured glass or coloured glasses fixed in the middle of front a or sides 6 and b¹
which front and sides may be provided with slides or shutters m for signalling
purposes.
Into
In the place of a candle a suitable lamp is provided fixable to back c and
consisting of a reservoir filled with oil or the like up to about its middle.
this reservoir reaches a perforated tube which is provided at its upper end with

page_text: tube arm which passes through an opening in c into the interior of the lantern
and through which the wick passes. In order to make the lamp burn for a longer
period oil may also be provided from a compartment above the level of the flame
by introducing a tube filled with oil into said compartment in such a manner that
between the funnel like bottom of tube h³ and the level of the filling (or contents)
of the lower compartment an air-space be formed & the bottom of ³ be lower
than the top of tube i.e. lower than the flame. By this arrangement an over-
flowing of the liquid is rendered impossible by the opposing force of the compressed
air and the liquid in the bottom compartment is constantly being replenished from
tube 3. In order to compensate for an escape of air expanded by the warmth of
the flame a tube / leads through tube 3 introducing a fresh supply of air as soon
as cork is taken out. In the bottom of his an opening which is closed by a
cork and serves for cleaning purposes.
In order to lead off the products of combustion both bottom e and cover i are
perforated, and cowl k may be provided with a worm which is put in motion by
the action of the flame and helps to expel gases from the interior of the lantern and
prevents the entering of cold air into the lantern through the openings k¹ in
cowl k.
Two handles p fixed to back e serve for carrying the lantern. Another handle o
is fixed to cover i.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is :
1) In a folding lantern the arrangement of a detachable oil reservoir shaped and
placed relatively to the lantern substantially in the manner as and for the purpose
described.
2) In such lanterns the arrangement of a telescopic candle holder so as to
keep the light at a level with slides or shutters for signalling purposes substantially
as described.
3) In such lanterns the signalling arrangement consisting of a sliding window or
shutter with or without coloured glass substantially as described.
4) The folding lantern substantially as described and shewn in Figs. 1. 2. 3
and 4.
Dated this 1st day of March 1809
Dated this 1st day of March 1809
BONNE & Co.,
57 & 58, Chancery Lane, Authorised Patent and Trade Mark Agents.