Improvements in Apparatus for Igniting the Gases in Gas Engines and the like.
Year: 1894

page_text: Date of Application, 29th Dec., 1894
Complete Specification Left, 29th Oct., 1895-Accepted, 30th Nov., 1895
Improvements in Apparatus for Igniting the Gases in Gas Engines
and the like.
We, ISAAC CORDINGLEY and TпOMAS WILLIAM CORDINGLEY both of Innox
Iron Foundry Trowbridge, Wilts, Engineers, do hereby declare the nature of this
invention to be as follows
-
Our improvements consist of a baffling block with ports of certain dimensions
and an inverted thimble operated automatically by the compression in the cylinder.
This thumble covers and uncovers or baffles the flame travelling from the ignition
tube to the cylinder. Ignition can only take place at certain required times and
premature explosions are prevented
Instead of the baffle block and inverted thimble a quadrant valve may be
attached to the cylinder and caused to open by the piston and to close by the air
valve.
Communication between the ignition tube and the oylinder may be caused to
take place at every alternate stroke, or at any required tune.
Dated this 27th day of December 1894.
ISAAC CORDINGLEY.
THOMAS WILLIAM CORDINGLEY.
and the like.
We, ISAAC CORDINGLEY and THOMAS WILLIAM CORDINGLEY both of the
Innox Iron Foundry, Trowbridge, in the County of Wilts, Engineers, 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 improvements in 01 in connection with igniting the
combustible charge in gas engines on the like such as petroleum engines or oil
engines and our invention consists of very simple and effective apparatus or
mechanism to prevent premature explosion of the charge while at same time it
ensures said charge being exploded at the exact moment we desne viz just after
the commencement of the power stroke-an essential feature of our said present
invention being that the uncovering or opening of the port between the ignition
tubo (or equivalent) and the interior of the cylinder (.e. the explosion chamber)
at the desired moment to explode the charge is effected automatically inside said
cylinder entirely independently of (1.c. without any connection with) any of the
exterior working parts of the motor, the closing of the said port according to our
present invention being either automatically effected from within the cylinder or
same may be effected from the exterior.

page_text: into practice we will proceed to fully descube same with reference to the drawings
herounto annexed
Fig. 1 1B a longitudinal section of part of a cylinder-of a gas or oil motor-
having our improvements applied.
Fig. 2 is a similar view-showing an alternative arrangement for opening and
closing communication with the igniter.
Similar letters of reference indicate corresponding parts throughout.
A is main cylinder
B 18 annular chamber forming usual water jacket-not shown in Fig. 2.
C is piston.
Referring now to Fig 1
DD' is channel or passage through the cylinder A forming communication from
the interior of the latter to the igniting device which may be of any suitable
charactor for instance an ignition tube E of the ordinary well-known type.
F18 baffling block or special device which we interpose in said passage D.
C15 circuitous passage-way or port of certain dimensions through said
block F.
II 18 inverted thumble or loose piston valve operating in a limited space or
chamber provided for same in said block F as hereinafter explained
This block F with loose valve II therein is arranged in the cylinder A-
advantageously in the uppermost portion thereof-in suchwise that the said thimble
will fall by its own gravity and normally rest on the bottom of the said valve
chamber.
H' is a pin hole or very small passage-way through the head of the valve H.
The dimensions of the passage G vary according to the size of the engine and
the distance of the igniter E from the interior of the cylinder A but must always
be such as to cause sufficient baffling action or delay in the explosive mixture
reaching the guiting device (ou commencement of the compression stroke) to
allow said compression to act on the inside 11' of the inverted thimble or loose
valve II and blow or foi ce same up against its scating D' and thereby completely
shut off passage D from passage Gaud thus automatically cut off all communication
between the igniter and the interior of the cylinder
I is sciew nut by which the parts are sccured in position on the cylinder A.
The operation is as follows:-
After the explosion has taken place on the return instroke or scavenging stroke
of the piston C the valve H which has fallen by its own weight rests on the
bottom of its chamber and continues in such position as shown in the drawings
during the next out-stroke or charging stroke during which although communication
remains opeu from the cylinder A. to the igniter E through the passage-way or
igniting port D G and D yet no explosion will take place as no explosive mixture
will reach the igniter E at this time.
On the next instioke i.e. compression stroke immediately compression of the
combustible charge in the cylinder A begins it instantly blows or forces the said
loose valve I tightly up against the valve scat D and this entirely cuts off
communication with the iguiter E before the combustible charge has had time to
pass round the circuitous passage G and reach the igniter through the passage D.
Thus communication is automatically entirely cut off from the igniter E during
the remainder of the compression stroke and thus (directly the crank has got over
the centre at the beginning of the next out-stroke) compression then lowers as the
Piston C begins to go out the invested thimble instantly and automatically drops
back to the position shown in Fig. 1 communication is thus opened from the explosion
chamber to the igniter the charge is ignited and the explosion takes place at the
moment we desire same viz: when most power can be got while premature explosion
of the charge is prevented
We find it advantageous to provide a pin hole or very small passage H' through
the top of the thumble or loose valvo H so that when compressiou begins and said

page_text: valve has been blown up against its seating D thereby & sman quantity of the
explosive mixture is forced through said pin hole II into the passage D and thus
immediately the valvo H drops thereby ignition takes place and the flame travels
from the ignition tube to the cylinder quicker and the charge is exploded
instantaneously on communication being opened.
Referring now to Fig. 2
J is a disc or circular shaped valve carried on the valve spindle J¹ which is free
to revolve in the block or end K of the cylinder A
Lare lock nuts on the said spindle J' by which said valve 18 prevented from
being sucked out of its seating in said block K and by means of which also said
valve can he adjusted to compensate for wear etc.
J* 18 a spirally arranged plate or incline plane on the said dise valve projecting
Inwardly into the cylinder.
M is a holo o recess in the centre of said valve J .e. concenture therewith.
Mis adial passage or port through said circulai valve J
K 16 port or passage through said block K and when the port M' coincides
therewith thus forms a continuous passage cominunicating from the igniter E to the
interior of the chamber A.
O is pin screwed or otherwise suitably fixed to back of the piston C and of
sufficient length to enter more or less within the hollow M in which it fits (as a
plunger) sufficiently closely to prevent ignition taking place or any flame passing
from the igniter E to the interior of the chamber A unless and until said pin O is
again moved clear of the said recess M.
P is a stud or projection advantageously a loose roller carried on said pin at
right angles thereto and adapted to ride up the spital plate o incline plane J* and
thereby force same out of its path and thus partially rovolves sand cncular valve J
in one direction as hereinafter explained.
Qis a spindle of or operated by the ordinary au valve (or if desired this
spindle Qmay he carried or connected to or otherwise suitably arranged so as to
be operated by the gas valve) which spindle Q acts to give partial rotation to
said circular valve Jin an opposite direction to the hist named movement as
hereinafter explained.
The operation is as follows.
"
On the outward charging stroke-the movement imparted from the exterior
mechanism to the air valve (or it may be the gas valve as aforesaid) by means of
the spindle Q operating against the incline plane Jx (ie at right angles thereto)
thereby partially revolves the enculan valvo J and places the port or passage M
therein so as not to coincide with the circuitous poil or passage K' leading to the
igniter E and thus communication between the latter and the interior of the cylinder
is entirely cut off and remains so during the return or compression stroke of the
piston C.
Just before the piston C reaches its rearmost position the projection O thereon
approaches the recess M while the roller P at this moment des against the spiral
plate J* and from the formation of the latter forces said spiral out of its way and
thereby a revolving movement is imparted to the circular valve J in the opposite
direction to that imparted by the spindle Q and this brings the passage Magain
into coincidence with the passage but at this moment the end O' of the pin 0
now lies within the recess M and although communication is complete between the
gniter E and the passage M¹ yet the plunger O prevents communication between
said passage M' and the interior of the cylinder duing the remainder of the back
stroke of the piston C and until the crank bas got over the centre and the outstroke
commenced whereupon the piston C as it commences such outstroke diaws with it
the pin O out of the recess M and thus permits communication right through from
the interior of the cylinder A to the igniter E and the explosion now takes place
at the most advantageous time as near the commoncement of said outstroke as
possible while any likelihood of premature explosion is rendered absolutelý
impossible.

page_text: The explosion may be caused to take place at every alternate outstroke as above
described or at any requited time by ananging the apparatus above described
accordingly as will be easily understood by anyone skilled in explosion engines.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim 18.-
1. In gas engines or the like-the combination with the passage-way or port
communicating from the interior of the cylinder to the igniting device of a valve
operated entirely from within the interior of said cylinder to cut off said
communication.
2. In gas engines or the like-the combination with the passage-way or port
communicating hom the interior of said cylinder to the igniting device of au
automatically acting valve adapted to open and close said communication and
operated entirely from within the said interior without any connection whatever
with the exterior mechanisın.
3 In gas engines or the like-the combiuation with a circuitous passage-way
oi poit leading from the interior of the explosion chamber to the igniting device
of a loose hollow valve (like an inverted thimble), controlling said passage said
valve being adapted to be blown on forced upwards by the compression of the
explosive change m the cylinder so as to cut off said communication and prevent
premature explosion and acting by giavity in the other direction to open said
communication.
4. The combination with a gas engine on the like of a valve operated in one
direction by pressure of the explosive charge and in the other direction by gravity
substantially in the manner and for the purposes herein before described.
5. The combination with a circuitous passage-way or port such as D G D'
leading from the igniting device to the interior of the explosion chamber of a gas
engine or the like of a valve chamber adjacent to said passage-way an inverted
thimble or loose hollow valve such as H operating in said valve chamber adapted
to close said passage-way when blown up against its seating D' by compression of
the explosive charge and dropping back (so as to open said passage) by gravity
when said compression is lowered substantially in the manner and for the purposes
herembefore described and illustrated in the diawings hereunto annexed.
6. The arrangement and combination with the cylinder of a gas engine or the
like of a block such as Fa circuitous passage-way theicthrough such as G coinciding
with ports such as D D' leading from the igniting dovice to the explosion chamber
a valve chamber formed in said block and open at each end to said passage-way
and an inverted thimble or loose hollow valve such as H operated and operating in
said valve chamber substantially in the manner and for the purposes herembefore
described and illustrated in Fig 1 of the drawings hereunto annexed.
7. The arrangement and combination in a gas engine or the like of a valve-
controlling the passage-way or communication between the igniter and the explosion
chamber-adapted to be revolved in one direction by the motor piston to open said
communication and adapted to be revolved in the opposito direction by the air
valve to close said communication substantially in the manner and for the purposes
bei einbefore described.
8. The arrangement and combination in a gas engine or the like of a valve such
as J having a passage-way such as M M therethrough and adapted to be revolved
in its seating or bearing a spiral plate or incline plane such as J* on the base
thereof a pin such as O carried on the motor piston and a roller o projection such
as P on said pin O to engage said spiral J* and thereby revolve the valve J in one
direction to open communication between the igniter and the cylinder and an arm
or spindle such as Q carried on or operated by the air valve (or gas valve) and
adapted to evolve said valve in the opposite duection and thereby close said
communication the end O¹ of said pin being adapted to enter and act in
conjunction with a recess such as M in said valve J and concentric therewith to

page_text: prevent premature explosion substantially in the manner and for the purposes
herein before described and illustrated in Fig. 2 of the drawings hereunto
annexed.
Dated this 29th day of October 1895.
TONGUE & BIRKBECK,
Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicants.
TONGUE & BIRKBECK,
outhampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicants.