An Igniting Device for Safety Lamps.
Year: 1895

page_text: Date of Application, 27th Mar., 1895-Accepted, 8th June, 1895
COMPLETE SPECIFICATION.
An Igniting Device for Safety Lamps.
I, CARL KOCH, Works Foreman, of Hamme near Bochum, Germany, 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:-
The present invention consists of an igniting device for safety lamps of all kinds
comprising the details of construction as hereinafter set forth.
In order to make the present invention more easily intelligible reference is hal
to the accompanying drawing in which similar letters denote similar parts through-
out the several views,
Fig. 1 being a side elevation of an oil reservoir of a safety lamp provided with
my improved igniting device,
Fig. 2 a vertical section through such oil reservoir,
Fig. 3 a plan of a modified form of carrying out the invention,
Fig. 4 a similar view, but shewing the friction device for igniting the strip,
thrown open, as when inserting a new igniting strip and
Fig. 5 a vertical section through the centre line s. s. of Fig. 3.
Referring to Figs. 1 and 2, k, is the oil reservoir having suspended therein by
means of a pin m, a box or chamber 4, capable of being opened and closed by
means of a suitable sliding door (not shown) and having mounted therein the roll
of igniting strip n. This igniting strip as employed in the present invention is not
of the ordinary construction, but consists of a woven strip, preferably of wool,
having throughout its entire length a wire or metal wire cord, said strip being
saturated with paraffin or the like and having arranged thereon at suitable distances
apart, pellets of igniting material of the usual composition. The end of the strip n,
passes through the hook shaped throat piece o, and then down through the pipe r
which extends through the reservoir and out at the bottom of the said reservoir
where the end of the combined fabric and wire strip is advantageously bent round
to form a loop s.
Within the throat piece o and at the under part of the mouth of
the same is provided a friction surface or friction teeth p, so that as the strip is
drawn down by the hand the pellets of explosive composition will be rubbed over
the igniting surface p and ignite the wick g, of the lamp, which lies close at the
mouth of the throat piece o.
In Figures 3 to 5 à modified form of carrying out the invention is illustrated,
according to which two annular chambers a and h are attached round the rim of
the top of the oil chamber, within the former of which a, the igniting band is coiled,
and extends with its end out between the igniting cheeks b and d across the opening
and out through the tube c, the said strip being operated in a similar manner to the
one described, with reference to Figures 1 and 2. When placing a new strip in
the annular space a, one of the frictional igniting cheeks b, may be opened out as
shewn in Figure 4, said cheek being pivotally mounted on the inner side of said
inner annular space, and being retained in a closed position, as shewn in Fig. 3, by
means of a pine adapted to engage behind said cheek when it is in contact with the
stationary check d. Instead of taking the end of the strip out of the casing
through the tube c, the same may be "wound on a drum f, inside of the annular
space d as shewn at Figure 5, the said drum f, having a slot in which the end of
the strip is inserted, and being actuated from outside the reservoir by means of the
stem and button g. It will be obvious that by turning the stem g the drum f, will
be rotated and wind off the strip, thus pulling it through the igniting cheeks and

page_text: causing the pellets of explosive material arranged on the said strip to ignite, and
winding the used up strip on the drum f. The inner annular space a, may be
closed by a cover i, having an exterior rim which serves to support the lamp glass
somewhat yieldingly, thus rendering the danger of said glass being damaged
considerably less. As will be seen the lower end of the said lamp-glass rests on
the rim of the cover i.
Having now particularly described and ascertained the nature of my said
invention and the manner in which it is to be performed I declare that what I
claim is :-
1. A device in combination with a safety lamp for igniting the same from the
outside, consisting of an igniting strip suitably mounted on the reservoir and
guided in the proximity of the lamp wick, said strip being caused to ignite and
light the lamp by being pulled over a frictional igniting surface arranged close to
the wick, by the said ignition strip being pulled at its lower end which extends
outside of the lamp substantially as described.
2. In an automatic lamp igniting device the arrangement of an ignition strip
consisting of a woven fabric, having arranged therein a wire or wire cord, and
having pellets of the usual explosive composition to cause the ignition substantially
as described.
3. In combination with a lamp, two annular spaces a and h arranged on the top
of the oil reservoir, a strip of igniting material wound in the inner space, frictional
igniting cheeks at the inside edge of the said inner space, between which the
ignition strip is fed and an exit tube c for the end of said strip, or a drum f, having
stem g on which to wind the said strip as the same is used up, in the manner and
for the purpose substantially as described.
Dated this 27th day of March 1895.
S. S. BROMHEAD,
97, Newgate Street, E.C., Agent for Applicant.