Improvements in Electrical Igniting Apparatus for Explosion Engines and for other purposes.
Year: 1897

page_text: Date of Application, 25th May, 1897
Complete Specification Left, 24th Mar., 1898-Accepted, 25th May, 1898
Improvements in Electrical Igniting Apparatus for Explosion
Engines and for other purposes.
I, CHARLES M JOHNSON, of Nos. 22 and 23, Laurence Pountney Lane, in the
City of London, Engineer, do hereby declare the nature of this invention to be
as follows:-
These improvements refer to electrical igniting apparatus for explosive engines
and for use in mines and other places. I effect the ignition of the charge in the
gas engine or other explosive engine by means of an electric battery or other
source of electricity which is connected to a coil or coils between the battery and
the point of ignition, and I also connect thereto a condenser of any convenient
construction. The engine or the like is arranged to make and break contact
in the circuit in any convenient manner. I find that such an apparatus produces
a very large spark.
It is evident that such an ignition apparatus may be used for igniting explosive
or inflammable charges other than those in explosive engines.
1807
Dated thin 96th dow of T 1907
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.
Improvements in Electrical Igniting Apparatus for Explosion
Engines and for other purposes.
I, CHARLES M JOHNSON, of Nos. 22 and 23, Laurence Pountney Lane, in the
City of London, Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement: -
These improvements refer to electrical igniting apparatus for explosion engines
and for use in mines and other places. I effect the ignition of the charge in the
gas engine or other explosion engine by means of a source of electricity such as
an electric battery a dynamo or a Wimshurst machine connected to a coil or coils
between the source or sources of electricity and the discharging rods or points
of ignition and I also connect thereto a condenser of any convenient construction.
The engine or the like is arranged to make and break contact in the circuit in
any convenient manner.
Figure 1 of the accompanying drawings represents diagrammatically one way
of carrying out my invention.

page_text: Referring to the drawing it will be seen that the current passes from the bat-
tery A by the wire B, condenser C primary coił D which energises the secondary
coil D connected to the discharging rods F F in the cylinder of the engine X.
The current returns to the other pole of the battery from the primary coil D
by way of the wire E revolving contact maker F2 and wire G permanently in
contact with the latter. As a battery of large dimensions is inconvenient on for
instance a motor car a source of electricity such as a dynamo or a Wimshurst
machine H driven by the engine X is employed in connection with the battery A
and when the engine is running, the generator charges the battery A by wires A¹
and H¹.
If a large condenser or a large coil be used they may be used separately.
It is evident that such an ignition apparatus may be used for igniting explosive
or inflammable charges other than those in explosive engines.
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:-
-
1. Electrical igniting apparatus for explosion engines and for other purposes
consisting of a source of electricity such as an electric generator a battery and
a coil or coils between the battery and the discharging rods substantially as
described and shown.
2. Electrical igniting apparatus for explosion engines and for other purposes
consisting of a source of electricity such as an electric generator a secondary bat-
tery and a condenser between the battery and the discharging rods substantially
as described and shown.
3. Electrical igniting apparatus for explosion engines and for other purposes
consisting of a source of electricity such as an electric generator, a secondary bat-
tery a coil or coils and a condenser between the battery and the discharging rods
substantially as described and shown.
Doted this 24th day of March 1898
March 1808
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.