An Improved Igniting Device for Fuses.
Year: 1897

page_text: Date of Application, 3rd July, 1897-Accepted, 7th Aug., 1897
COMPLETE SPECIFICATION.
An Improved Igniting Device for Fuses.
I WILHELM NORRES of Schalke, Westphalia in the Empire of 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:-
This invention relates to an improved lighting device for fuses, which, in
addition to its simple and advantageous construction, is especially characterised
by its enabling fuses to be ignited even in the bore hole.
The device consists essentially of a paper holder or sheath to be placed over
one end of the fuse and closed at its rear end by a long piece folded in, in which
holder or sheath an igniting cap is arranged which is placed on the spirally wound
end of a wire projecting into the paper sheath and is caused to ignite by this wire
being drawn through the percussion cap.
In the accompanying drawing this igniting device is shown in longitudinal section
in Figure 1 and in elevation in Figure 2.
is a paper sheath, the outer end of the fuse on which the sheath is placed.
The paper sheath a is closed at its lower end by a long fold a' forming the bottom
of the sheath, and this fold is held together by means of a ring c enclosing the
end of the sheath or holder. d is the percussion cap or igniting device arranged
in the interior of the sheath. A wire e is passed through the fold a' of the
sheath a, the inner end of said wire being twisted spirally and passed with its
twisted end through the cap d, the latter being for this purpose suitably perforated.
The outer end of the wire e is preferably formed in a loop el which serves as a
handle.
When it is desired to use this igniting device, the paper sheath a is placed over
the end of the fuse b, held fast on the same with the fingers, and then the wire e
is drawn back with a short pull, the spirally shaped inner end of the wire being
thereby drawn through the cap d and consequently producing the ignition of the
cap and fuse. The escape of sparks is prevented by the fold a¹ of the paper sheath,
but the fold allows enough smoke to escape to enable it to be ascertained whether
the fuse is burning. The lateral burning through of the fuse may be rendered
harmless in using this igniter, by the igniter, after being placed on the end of the
fuse which projects from the bore hole, being pushed with said fuse end into the
bore hole and then only ignited when the end of the fuse and the igniter are
contained in the mouth of the bore hole
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is:.
-
An igniting device for fuses, with which the fuse may be ignited even in the bore
hole itself, consisting of a paper holder or sheath enclosing the end of the fuse, the
rear fastening or bottom of said holder being formed of a long fold preventing
the spurting out of sparks, but allowing some smoke to escape, also of a cap
arranged in said paper sheath and a wire projecting from the outside through the

page_text: wall of the sheath into its interior, which wire within the case is provided with a
spiral twist which is passed through the correspondingly perforated cap and for
the purpose of igniting the charge is drawn back to pull the twist through the cap
and thus produce the ignition of the latter, substantially as hereinbefore described.
Dated this 2nd day of July 1897.
5
WM.P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.