Year: 1887

page_text: 1, RICHARD MORRIS of Bennett Park, Blackheath in the County of Kent, Engineer
do hereby declare the nature of this invention to be as follows:-
My invention relates to an electric fuse or primer specially adapted for firing
ordnance, or other fire arms, but applicable also for firing blasts. For this purpose,
make a capsule like a small cartridge case with a hole through its bottom. Through
this hole I pass an insulated conducting wire and surround it by plug or wad of
paper compressed into the capsule to steady the wire and act as a gas check. To the
end of the wire exposed beyond the wad and to the edge of the capsule I solder a
small piece of fine platinum wire or foil. I force the capsule thus prepared into a
cartridge or charge chamber which I charge with explosive, then this cartridge or
charge chamber being connected through earth or otherwise with one terminal of an
electric generator, when the wire is also connected with the other terminal and an
electric current transmitted, the platinum connection of the wire to the capsule
becomes heated and fires the explosive. When two insulated wires are employed, I
twist them together and pass them through the bottom of the capsule and through
the wad which is then compressed around them; I spread the ends of the twisted
wires apart and solder on to them a small piece of platinum wire or foil. The two
wires being connected respectively to the terminals of an electric generator, when a
current is transmitted the platinum connection becomes heated and fires the
explosive.
T
30
1 1
Antah 1007
ABEL & IMRAY,
Agents for the Applicant.

page_text: I, RICHARD MORRIS of Bennett Park, Blackheath in the County of Kent, Engineer
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 relates to an electric fuse or primer specially adapted for firing
ordnance, or other fire arms, but applicable also for firing blasts. For this purpose I make
make a capsule like a small cartridge case with a hole through its bottom. Through
this hole I pass an insulated conductor and surround it by a plug or wad of paper
compressed into the capsule to steady the conductor and act as a gas check. To the
end of the conductor exposed beyond the wad and to the edge of the capsule I solder
a small piece of fine platinum wire or foil. I force the capsule thus prepared into a
cartridge or charge chamber which I charge with explosive, then this cartridge or
charge chamber being connected through earth or otherwise with one terminal of an
electric generator, when the conductor is also connected with the other terminal and
an electric current is transmitted, the platinum connection of the conductor to the
capsule becomes heated and fires the explosive. When two insulated wires are
employed, I twist them together and pass them through the bottom of the capsule
and through the wad which is then compressed around them; 1 spread the ends of
the twisted wires apart and solder on to them a small piece of platinum wire or foil.
The two wires being connected respectively to the terminals of an electric generator,
when a current is transmitted the platinum connection becomes heated and fires the
explosive.
Fig. 1 of the accompanying drawings is a vertical section of an electric fuse or
primer according to my invention suited for use with a single conductor which is
connected to the central pin A.
This pin being of metal is insulated by a ferrule B of ebonite or the like from the
base of the capsule C in which there is a wad D, which may be of compressed paper
when the fuse is employed for firing moderate charges, but which is preferably of
incombustible material such as asbestos when used for heavy charges. The end of
the pin A is connected to the lip of the capsule by a piece of platinum strip or
wire. The capsule C thus prepared is inserted in a case F which is filled up with
explosive, to be ignited by the electrical heating of E. For firing heavy charges the
fuse or primer is made in the stronger form shewn in Fig. 2, the capsule being
made of taper form and inserted in the tapered cavity of the case F preferably with
compressed packing G below it. The wires, of which in this case there are two A,
each insulated and both twisted together, are passed through the packing D and
separately through a wad H of insulating material, and their ends are connected by
the platinum strip or wire E.
C

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. An electric firing fuse or primer having a single insulated conductor substantially
as described with reference to Fig. 1.
2. An electric firing fuse or primer having two insulated wire conductors, sub-
stantially as described with reference to Fig. 2.
ABEL & IMRAY,
Agents for the Applicant.