Improvements in and relating to Petroleum Lanterns or Lamps.
Year: 1894

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COMPLETE SPECIFICATION.
Improvements in and relating to Petroleum Lanterns or Lamps.
A communication by G. ZIMMERMANN, of 57, Rothebühlstrasse, Stuttgart, in the-
Empire of Germany, Court Tinman.
I, WILLIAM Phillips THOMPSON, F.C.S., M.I.M.E., of The Agency for
Foreign Patent Solicitors, 6 Lord Street, Liverpool and 6, Bank Street,
Manchester, both in the County of Lancaster and 323 High Holborn, in the
County of Middlesex, Civil Engineer, do hereby declare the nature of this inven-
tion 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 an improved petroleum or other non-explosive lantern,.
the light of which is automatically extinguished on the lamp falling over, or being
considerably inclined, so that explosions and fires are by the use of the same
entirely prevented. It also relates to an improved fastening device for the doors
of the same. For this object both the lamp itself as well as the burner-cap are-
movably arranged, as may be seen on the accompanying drawing, in which,
Figure 1 is a vertical section of the lantern.
Figure 2, the same when tilted;
Figure 3 is a section of the burner when tilted.
Figures 4 and 5 are enlarged views of the fastening device for the doors.
In the four corners of the lantern A, wire loops B are fastened, on the inner arms
of which the lamp C is loosely hooked by means of lugs or eyelets D.
The loose burner a of the lamp is provided with a cylindrical movable cap c
instead of a fixed one as usual, which cap c is conical or funnel shaped and provided
with an edge d and is inserted in the round casing of the burner e which is narrowed
at the top, and serves as an extinguisher when the lantern falls over. If the
lantern is brought into an inclined position, as in Figure 2, or falls right over, the
lamp C also tips so far downwards until the uppermost lugs or eyelets D remain
hanging in the bend of their respective loops B, whilst the under edge of the lamp
well rests against the bottom of the lantern, so that the lamp and with it the burner
assumes a downwardly directed position whereupon the burner cap c, by its own
weight, automatically drops downward or moves forward so that the funnel shaped
part of the same projects over the edge of the wick f, and presses with its upper
edge against the burning wick. The edges of the casing of the burner and the cap
resting one on the other at y and d prevents the access of air from below and
extinguishes the flame.
The lantern is conica! in form in order that it may be all the more difficult to
upset, but if it should be overturned, the inclination of the lamp to the front is
greater, thereby essentially assisting the more perfect working of the extinguishing
apparatus. The petroleum is poured into the lamp through the filling pipe E.
which is so arranged that the lamp can only be filled as far as the line m. There
thus remains above the oil a layer of air which protects the oil from becoming over
heated and thus simultaneously prevents the evaporation of the oil and the
increased consumption caused thereby. As a further security, a tube u is provided
for carrying off any oil vapour which may be given off. This receives the vapour
at n and allows the same to escape from the bottom of the lamp at o without, how-
ever, it being possible for oil to escape through the pipe. By the attachment of
the lamp to the loops, any unauthorised and frequently dangerous taking out of the
lamp from the lantern cannot take place. All the parts of these lanterns are
rivetted or otherwise strongly fastened together, and a peculiarly constructed cowl

page_text: or headpiece serves to carry off the exhausted air and prevents any penetration of
the wind.
The lantern door p is also easily and safely fastened by means of the spring i
which is attached to the inside of the left corner bar of the lantern, passes through
this latter at k and holds the door fast at l without any further arrangement, by
means of a curved end formed in the shape of a fastening hook. By simply pulling
the door, this latter may be opened, and closed by simply pressing it to.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I declare that what I claim is―
1. A preferably conically shaped lantern provided with a lamp movably
suspended in lugs or eyelets, and having in the casing of the burner a round,
conical or funnel shaped burner-cap loosely inserted therein, which, on the upsetting
of the lamp, extinguishes the flame by sliding over the edge of the wick substan-
tially as herein before described and shown on the accompanying drawing.
2. In a lantern such as described in Claim 1, a tube arranged in the well of
the lamp for carrying off any vapour that may be given off substantially as
described.
3. A fastening device for lantern doors consisting of a curved wire spring
attached to the inside of one of the uprights of the lantern frame passing through
the same, and bent round on the outside to form a fastening hook substantially as
herein before described and shown more particularly in Figures 4 and 5.
Dated this 7th day of May 1894.
WM. P. THOMPSON & Co.,
Agents.