ad ares of the complete lamp in planes perpendicular
Year: 1895

page_text: Date of Application, 13th Mar., 1895-Accepted, 24th May. 1895
ad 2 are vertical sections of the complete lamp in planes perpendicular
I DIEDRICK BRAUCKMANN of Holzwickede in the Province of Westphalia,
Germany Forge Master 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 new and useful improvements in mining safety lamps
by which the lamp at the slightest trial of opening extinguishes and cannot be
rekindled before it is regularly closed.
When opening the lamp the priming apparatus is also caught and kept in this
position until the lamp is perfectly closed. The miner may therefore open the
lamp and clean it without being able to cause an explosion.
A further advantage of my lamp is that the wick cannot be damaged.
The manner in which I carry my invention into effect is shown on the accompanying
drawing of which
Figures 1 and 2 are vertical sections of the complete lamp in planes perpendicular
to each other;
Figure 3 is a horizontal section along line a-a of Figure 1;
Figures 4, 5 and 6 show to an enlarged scale the extinguishing apparatus ;
Figure 7 the instrument for actuating the same;
Figure 8 is a modified construction of the extinguishing apparatus ;
Figure 9 shows an arrangement for preventing the opening of the lamp;
Figure 10 is a modified arrangement of the socket.
Referring to Figures 1-6 a and b are the top and bottom parts of the lamp
respectively. The latter forms the reservoir and is closed by an annular lid c.
To it is fixed the double socket & which communicates with the reservoir and is
connected with its bottom c¹ by a tube f. Into the socket is put the wick by means
of a peculiar tube f¹ so that it may be raised and lowered by means of an
adjusting screw and a nut i placed in the tube and fixed to f¹ respectively.
The adjusting screw is secured against vertical motion by a double armed lever g,
surrounding the screw for this purpose with its forked end. Near the lever g
there is arranged another lever k carrying a plate or cap n and being connected
with the lever g by a finger m, so that by moving the lever g the cap n is put
firmly upon the socket or withdrawn from it. When the lamp is closed the
counter arm of the lever g is in such position, that the plate n is taken off the
socket. For this purpose within the annular lid c a ring o is arranged, being carried
on said lid by helical springs p and provided with a projection q pressed by the
glass cylinder firmly upon the counter arm of the lever g Figure 4. In this position
the priming apparatus is also ready for use. It consists of a casing s which is fixed
to the lid c and carries in it the rolled up priming bands which is actuated by a
bars from below the lamp. Now the bar s2 and the casings cannot be moved
when the lamp is opened and the extinguishing apparatus set in motion. For this
purpose the two parts a and b are screwed slightly asunder a turn of 45° is
sufficient. Then the lever g goes down by the working of a spring u being
arranged between said lever and the fixed lid t and takes with it the wick. At the
same tinie the lever k is moved and the cap is put firmly upon the socket,
extinguishing thus the flame and preventing every explosion of gases.
For catching at the same time the priming apparatus there is arranged on the
ide a third lever v which, when the lamp is closed, is brought out of contact with
D

page_text: the priming apparatus by the ring o that presses on the sloping end of the lever,
but in the open state of the lamp is left free by the ring o and enters the casing s
and the bars by means of the spring w preventing any movement of them.
The lamp now may be perfectly opened for cleaning or filling the reservoir
afresh which is done at the opening X. To rekindle the lamp is quite impossible
without the help of the ring A Figure 7 which actuates the extinguishing and
priming apparatus instead of the top part a (Figure 4 in dotted lines). The lamp
can be only rekindled, when both parts are screwed together.
Instead of
A modification of the extinguishing apparatus is shown in Figure 8.
the lever k there is arranged a vertical bar k¹ carrying at its top the cap n¹. In
the closed state of the lamp the cap is pulled off from the socket by turning the
bar by a spiral spring y.. When opening the lamp the bar is turned by the
levers gz in the contrary direction and the socket closed by the cap n¹.
Now it could happen that three or more primers have failed, which are then
kindled by the following so that a great flame arises, which when now the lamp is
suddenly opened may cause an explosion of the gases. To avoid this drawback I
have made the following arrangement. The bottom of the part a of the lamp is
provided with a spring A¹ having at its free end a small pin which in the closed
state of the lamp lays upon the lid c, but enters a hole in it when the lamp is a
little opened. The further opening of the lamp is thus prevented and the primers
have a considerable time to burn perfectly. For then opening the lamp I arrange
in the reservoir guided in a peculiar tube C a nut B which can be raised and lowered
by a screw D and thus can free the pin of the spring from the hole.
The socket shown in Figures 1-8 is arranged for benzine and the like thin liquid
combustibles. For oil etc., I preferably use the socket shown in Figure 10. Here
the socket is pressed flat and corresponding to it is formed the wick tube d¹ which
is provided with an arm d² that is connected to the lever g and actuated by it in
the described manner.
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 mining safety lamp for combustibles of every kind having an annular lid e
and a
ring o being carried on said lid by helical springs p, a double armed forked
lever g being coupled with a cap lever and the wick tube f and actuating the
wick and its tube by the working of the glass cylinder and a spring u in such a
way, that the wick is raised or lowered and the socket closed by the cap n when
the lamp is screwed a little open or regularly closed.
2. A mining safety lamp having an annular lid c and a ring o in combination
with a prining apparatus consisting of a casing sa priming band s¹ and a bar s²
which are caught or freed by a lever and a spring w actuated by the ring o when
the lamp is opened or screwed together.
3. A mining safety lamp having an annular lid c and a ring o, a double armed
forked lever g actuating a lever z and a revoluble bar whose cap n' closes the
socket at the screwing asunder of the lamp and frees it by the working of a spiral
spring y when the lamp is closed.
4. A mining safety lamp having an annular lid c and a ring o a spring A¹ that
enters a hole in the lid c for preventing the lamp being opened too quickly and is
left free by a nut B and adjusting screw D.
The whole as described and for the purpose set forth.