Improved Means for Igniting the Combustible Charges in Gas, Oil, and like Engines.
Year: 1895

page_text: Date of Application, 14th Aug., 1895
Complete Specification Left, 30th Mar., 1896-Accepted, 18th Apr., 1896
PROVISIONAL SPECIFICATION.
Improved Means for Igniting the Combustible Charges in Gas, Oil,
and like Engines.
We, ALFRED SHUTTLEWORTH and FRANK SHUTTLEWORTH, both of the
Stamp End Works, Lincoln, Agricultural Engineers, and PERCY DEED,
Draughtsman in the employ of Messrs. Clayton & Shuttleworth, of the Stamp
End Works, Lincoln, aforesaid, do hereby declare the nature of this invention
to be as follows:-
:-
According to this invention the combustible charges in a gas, oil, or like engine
are automatically ignited at the required times, after the starting of the
engine, by an igniting device consisting of a pin which is fixed at one end within
and at its other end is gradually reduced in diameter or thickness down to a
point and projects some distance beyond the open end of an ignition tube which
is secured to the combustion end of the engine cylinder or to the vaporizer,
according to requirement, so that its interior is in communication with the
combustion chamber of the engine into which the pointed pin projects, the arrange-
ment being such that for starting the engine, the tube can be heated externally by
a Bunsen or other flame as well understood, which, after the engine is fairly
started can be removed, the subsequent ignitions being effected by the said pointed
pin which will then have been rendered sufficiently hot for the purpose and will be
kept hot by the repeated explosions in the combustion chamber of the engine.. In
the case of an oil engine having a vaporiser, the ignition tube with internal pointed
igniting pin projecting beyond it may advantageously be so arranged as to be heated
by the flame employed for heating the vaporiser when starting the engine. More
than one pointed pin applied as above described might in some cases be conveniently
used. Or in lieu of the construction already described we sometimes employ an
igniter comprising a tube that can be heated externally by a lamp and within. it a
quantity of asbestos in coils, strips, balls or other form kept in place by a perforated
or reticulated diaphragm located at or near the open end of the tube."
Dated this 14th day of August 1895.
Improved Means for Igniting the Combustible Charges in Gas, Oil,
and like Engines.
We, ALFRED SHUTTLEWORTH and FRANK SHUTTLEWORTH, both of the
Stamp End Iron Works, Lincoln, Agricultural Engineers, and PERCY DEED,
Draughtsman, in the employ of Messrs. Clayton and Shuttleworth, of the 'Stamp
End Works, Lincoln, aforesaid, do hereby declare the nature of this invention
Prics Rd71

page_text: and in what manner the same is to be performed to be particularly described
and ascertained in and by the following statement :-
According to this invention the combustible charges in a gas, oil, or like engine
are automatically ignited at the required times, after the starting of the engine, by
an igniting device consisting of a pin which is fixed at one end within, and at its
other end is gradually reduced in diameter or thickness down to a point and projects
some distance beyond the open end of an ignition tube which is secured to the
combustion end of the engine cylinder or to the vaporizer according to requirement,
so that its interior is in communication with the combustion chamber of the engine,
the arrangement being such that, for starting the engine, the tube can be heated
externally by a Bunsen or other flame as well understood, which, after the engine
is fairly started, can be removed, the subsequent ignitions being effected by the
said pointed pin, which will then have been rendered sufficiently hot for the
purpose and will be kept hot by the repeated explosions in the combustion chamber
of the engine. In the case of an oil engine having a vaporizer, the ignition tube
with internal pointed igniting pin, may advantageously be so arranged as to be
heated by the flame employed for heating the vaporizer when starting the engine.
More than one pointed pin applied as above described might in some cases be
conveniently used.
In the accompanying drawings,
Fig. 1 is a longitudinal section showing an igniting device according to this
invention applied to the combustion end of a gas engine cylinder.
I is the igniting pin, which may advantageously be of steel. It is fixed by
screwing at its end 1" in a removable cap 2 screwed on one end of the ignition
tube 3, its other end 1 being pointed. The tube 3, which may also be of steel,
is screwed at one end into the end wall 4" at the combustion end of the engine
cylinder 4 so that its interior is in communication with the combustion chamber 5
into which the pointed end of the pin 1 may project as shown, whilst its exterior is
external to the end wall 4 so that it can be readily heated by a Bunsen or other
flame for starting the engine, after which, the flame can be removed and the
subsequent ignitions be effected by the pin 1 as herein before described.
Fig. 2 is a longitudinal section showing the igniting device applied to the
vaporizer of an oil engine. In this arrangement, the ignition tube 3 is shown
screwed into the end wall 4* of the vaporizer so that its interior is in communication
with the combustion chamber 5 into which the pin 1 projects, whilst part of the
tube extends across the chimney 6 in the vaporizer so that it will be heated by
the Bunsen or other flame used for heating the vaporizer for starting the
engine.
Fig. 3 is a horizontal section showing the ignition tube 3 with pin 1 screwed
to the end wall 4" of the vaporizer of an oil engine cylinder in such a way that
both the tube and pin in this case extend into the combustion space 5. With this
arrangement, an ordinary hot tube 7 (Fig. 2), secured to the lower part of the
vaporizer below the chimney 6 so as to be heated by the Bunsen or other flame
used for heating the vaporizer at starting, may be used for effecting the ignition of
the combustible charges at, starting, after which such igniting means may be
dispensed with and the ignitions be effected by the pin 1 as in the arrangements
shown in Figs. 1 and 2.
In lieu of the constructions already described, we sometimes employ an igniter
comprising a tube that can be heated externally by a lamp flame, and within
it a quantity of asbestos in coils, strips, balls, or other form kept in place by a
perforated or reticulated diaphragm located at or near the open end of the tube.
Fig. 4 is a similar view to Fig. 1 showing such an igniter applied to a gas engine,
though it may equally well be applied to an oil engine.
3, is a metal tube arranged as in Fig. 1 and charged with asbestos 1*, which
may be in any one of the forms mentioned, and is held within the tube by a
perforated or reticulated diaphragm 8 which is located at the open end of the tube
and between the asbestos and the combustion chamber 5.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed we declare that what.
we claim is :-
:-
1. For automatically igniting, at the required times, the combustible charges in
a gas, oil or like engine after the same has been started, an igniting device cota--
prising one or more pointed pins 1 fixed within and so as to project beyond the
open end of an ignition tube 3 which is secured to the combustion end of a gas
engine cylinder or to the vaporizer of an oil engine cylinder, so that its interior is
in communication with the combustion chamber of the engine, substantially as.
herein described for the purpose specified.
2. The hereinabove described automatic igniting device for oil, gas, and like
engines, constructed, arranged and operating as herein before described with
reference to and shown in Fig. 1, in Fig. 2 and in Fig. 3 of the drawings.
annexed.
3. The modified construction of automatic igniting device hereinbefore described.
with reference to and shown in Fig. 4 and comprising an ignition tube secured to
the combustion end of a gas engine cylinder or to the vaporizer of an oil engine
cylinder so that its interior is in communication with the combustion chamber of
the engine, and so that it can be heated externally by a lamp flame, and having
within it a quantity of asbestos kept in place by a perforated or reticulated.
diaphragm located at or near the open end of the tube as set forth.
Dated this soth day of March 1890.
For the Applicants,
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent..