Improvements in Gas Engines.
Year: 1889

page_text: Date of Application, 15th Oct., 1889
Complete Specification Left, 26th June, 1890-Accepted, 26th July, 1890
PROVISIONAL SPECIFICATION.
Improvements in Gas Engines.
I WILLIAM HENRY GREEN of No. 4 New Park Road St. James' End Northampton
Engineer do hereby declare the nature of this invention to be as follows:-
The object of my invention is to provide a simple form of gas engine that may be
started with great ease and certainty and in which there is little or no missing of
explosions and comparatively no smell or noise and wherein faced slides are not
required.
In carrying out my invention I construet an engine having a cylinder with two
slide valves one on the front and one at the side contained in boxes after the manner
of an ordinary steam pump. The side valve supplies air and exhaust products of
combustion whilst through the front valve is received gas and air and the means for
igniting the same passing through a hole in the centre into the explosion box at the
foot of the cylinder.
In the interior of the explosion box I arrange a self acting clack-valve by means
of which "back explosions" are prevented whilst the hole in the outer valve or plunger
is being closed.
The exhaust valve or plunger at the side of the cylinder exhaust products whilst
at the same time air is drawn in through perforations in the top of the valve and
down the centre thereof by means of a disc or crank on the end of the fly wheel
shaft the plunger being arranged so as to descend only so far as to supply sufficienţ
air and then ascending withdraws products through exhaust pipe.
The ignition port is arranged at the foot of the cylinder and through this the light
is drawn the self acting clack valve being quickly closed.
Governors may regulate the admission of gas being worked by means of a catch
on the top of the ignition plunger.
The engine is started by turning the fly-wheel so as to bring the piston to its
central position thus introducing the necessary charge of air and gas when the
ignition takes place and the engine continues in motion until stopped by turning off
the gas.
Dated this 15th day of October 1889.
POPPLEWELL & Co.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Gas Engines.
I WILLIAM HENRY GREEN of 4 New Park Road St. James' End Northampton
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:―
The object of my invention is to provide a simple form of gas engine that may be
started with great ease and certainty and in which there is little or no missing of
explosions and comparatively no smell or noise and wherein faced sides are not
required.
In carrying out my invention I construct an engine having a cylinder with two
slide valves one on the front and one at the side contained in boxes after the manner

page_text: of an ordinary steam pump. The side valve supplies air and exhausts products of
combustion whilst through the front valve is received gas and air and the means
for igniting the same passing through a hole in the centre into the explosion box at
the foot of the cylinder.
In the interior of the explosion box I arrange a self acting clack or ball valve by
means of which "back explosions" are prevented whilst the hole in the outer valve
or plunger is being closed.
The exhaust valve or plunger at the side of the cylinder exhausts products whilst
at the same time air is drawn in through perforations in the top of the valve and
down the centre thereof by means of a disc or crank on the end of the fly-wheel
shaft the plunger being arranged so as to descend only so far as to supply sufficient
air and then ascending withdraws products through exhaust pipe.
The ignition port is arranged at the foot of the cylinder and through this the flame
is drawn the self acting clack valve being quickly closed.
Governors may regulate the admission of gas being worked by means of a catch on
the top of the ignition plunger.
Referring now to the accompanying sheet of drawings and to the figures and letters
of reference thereon
Figure 1 is a side view of the engine or motor;
Figure 2 is a transverse section of the same;
Figure 3 is a plan view;
Figure 4 is an enlarged section through ignition port and valve, and
Figure 5 an enlarged section of the exhaust valve.
In the cylinder A works a plunger or piston B connected by piston rod C to
crank D and shaft E carrying fly wheel F. On crank shaft E at opposite end is
mounted a cam or crank actuating the rod G connected to and working slide valve H
at front of engine cylinder the orifice or port H' in which communicates when in
position with port I through which gas and air are introduced to the ignition
chamber J at foot of cylinder, this port being controlled by ball valve K which
closes the aperture after each explosion.
The flame from gas jet or burner L is introduced through same port and the extent
of flame or supply of gas is controlled by adjusting screw valves L1, L2. L³ is a
supplementary jet or flame for the purpose of keeping alight or lighting the main
flame or jet L and is also controlled by similar adjusting devices.
A mixture of gas and air is sucked in through the ignition port and through a
slot or holes in the slide valve at a different portion of the stroke from a connection M
communicating with the gas supply pipe on which is the tap N for the purpose of
controlling such supply.
Air is also introduced through the end or exhaust valve O in which works a
plunger P perforated in its upper portion to admit air and having its lower extremity
arranged so as to force out the products of combustion through exhaust pipe Q after
being drawn through exhaust port R.
The gas supply regulating the speed of the engine is controlled by a governor S
on the shaft of which is an arm T on which is pivotted a bell crank lever U actuated
by a hit and miss device and capable of closing the plug valve V on the gas supply.
The action of the engine or round of operations is as follows:
On the flywheel being partially turned the piston B is moved upwards and air
and gas drawn in through ignition port I and air through exhaust port R; these
becoming mixed form the ignition charge. The air and gas being cut off at about
half the stroke by the closing of the slide valves, the orifice for admission of the
igniting jet in the front plunger is then brought opposite the ignition port and the
explosion takes place causing the self acting clack or ball to immediately close
the said ignition port. At the end of the stroke the exhaust port R is opened by the
plunger P being raised to its full height and on its return the products of combustion
are expelled through the pipe Q.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what
claim is:
In air and gas engines or motors the general arrangement and construction of
parts substantially as hereinbefore described and as illustrated by the accompanying
drawings.
Daten vuis 20 day of June 1990.
POPPLEWELL & Co.,
17 & 18, Southampton Buildings, London, W.C., Agents for the Applicant.