Improvements in Petroleum Motor Engines.
Year: 1889

page_text: Date of Application, 27th May, 1889
Complete Specification Left, 25th Mar., 1890-Accepted, 26th Apr.,
1890
PROVISIONAL SPECIFICATION.
[Communicated from abroad by FRIEDRICH CARL GLASER, of 80, Linden Strasse,
Berlin, in the German Empire, Engineer and Patent Agent.]
Improvements in Petroleum Motor Engines.
I, OLIVER IMRAY of No. 28 Southampton Buildings, Chancery Lane, in the County
of London, Fellow of the Institute of Patent Agents, do hereby declare the nature of
this invention to be as follows:-
This invention relates to improvements in the arrangements for effecting the
supply of petroleum to petroleum motor engines.
According to the present invention the explosive mixture is produced and introduced
into the cylinder of the engine by causing a jet of air, in passing the orifice of a
petroleum conduit, to take up a certain quantity of petroleum which mixes therewith
in the form of spray and such mixture is then carried into the heated cylinder
bottom.
The arrangement for this purpose is shewn on the accompanying drawings.
The air jet is produced by means of a small air pump A driven by the engine,
and passes from the valve chamber B through valve D into the chamber of the
cylinder situated behind the valve H where, by the sucking action of the air jet, the
petroleum is drawn out of the vessel G through the pipe f, and mixing with the air
in the form of spray, passes with the same and with a further body of air into the
vaporizing chamber of the cylinder.
Fig. 1 shews diagrammatically a vertical section through the complete apparatus.
Figs. 2 and 3 shew the construction of air pump employed, in elevation and vertical
section to an enlarged scale.
The arrangement and mode of action is as follows:-.
The compressing pump A is constructed as a pump without valves, the pump
cylinder being mounted on a fixed pivot at Q so as to have an oscillating motion
imparted to it by the piston or plunger as this is reciprocated by a crank driven by
the engine; on the side of the cylinder is formed a flat face R against which is
pressed air tight a head S fixed on the end of a pipe V.
From the bottom of the cylinder a passage T leads to a port U in the face R;
assuming, the crank to be rotating in the direction of the arrow Fig. 2 the piston
during its upward or suction stroke will move the cylinder from the central position
shewn, towards the right and then back again into that position, so that during such
stroke the part U will remain uncovered, and consequently the piston will draw in air
through it. On the return or compression stroke, the cylinder, in moving to the left
of the position shewn and back again, will cause the port U to pass behind the head S
and consequently the air will be forced by the piston through the enlarged opening
of S into the pipe V, the port U passing from behind the head again towards the end
of the stroke.
The head S being pressed air tight against the face R by a spring, the compressed
air in the pipe V cannot escape when the cylinder is performing the first described
semi-oscillation.
A volume of compressed air being thus maintained by the pump in the chamber B with
which the pipe V communicates, a portion hereof is allowed to escape by the opening of
the valve D on the upstroke of the engine piston C, which air passing through pipe E
issues as a jet immediately over the orifice of the petroleum conduit f situated at
right-angles thereto, and, as before described, draws a certain quantity of petroleum
out and carries it with it in the form of spray together with a further quantity of air
drawn in through the pipe L, past the valve H into the cylinder space J, thus
forming a charge consisting of finely divided petroleum spray and air, the petroleum
•

page_text: of which becomes effectually vaporised on contact with the heated recessed bottom K
of the cylinder, the charge being subsequently fired in the usual manner.
In order to maintain a constant level of the petroleum in the vessel G, there is
arranged above the same a supply tank M from which it is allowed to drip into G
through a cock N so as to be slightly in excess of the amount used, the surplus
flowing off through the overflow pipe O into the receptacle P.
The valves D and H are both actuated by suitable cams driven by the engine, and
timed so as to open them at the required moment.
Dated this 27th day of May 1889.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Petroleum Motor Engines.
I, OLIVER IMRAY of No. 28 Southampton Buildings, Chancery Lane, in the
County of London, Fellow of the Institute of Patent Agents, 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 the arrangements for effecting the
supply of petroleum to petroleum motor engines.
According to the present invention the explosive mixture is produced and introduced
into the cylinder of the engine by causing a jet of air, in passing the orifice of a
petroleum conduit, to take up a certain quantity of petroleum which mixes therewith
in the form of spray and such mixture is then carried into the heated cylinder
bottom. The arrangement for this purpose is shewn on the accompanying drawings.
The air jet is produced by means of a small air pump A driven by the engine, and
passes from the valve chamber B through valve D into the chamber of the cylinder
situated behind the valve H where, by the sucking action of the air jet, the
petroleum is drawn out of the vessel G through the pipe f, and mixing with the air
in the form of spray, passes with the same and with a further body of air into the
vaporizing chamber of the cylinder.
Fig. 1 shews diagrammatically a vertical section through the complete apparatus.
Figs. 2 and 3 shew the construction of air pump employed, in elevation and vertical
section to an enlarged scale.
The arrangement and mode of action is as follows:-
The compression pump A is constructed without valves in such a manner that it
is made to swing backwards and forwards with a flat face fitting air-tight against a
stationary head which is pressed air-tight against it, the pump piston being made
to draw in air through a passage during the upstroke and to force such air during
the downstroke into a passage in the head.
For this purpose the pump cylinder is mounted upon a fixed pivot Q and its
piston is worked by means of a crank driven by the motor engine itself, so that in
performing the path indicated by the dotted circle, the crank causes the cylinder to
oscillate on its pivot.
Against the slide surface R of the cylinder, which is parallel with the plane of
oscillation, is pressed the head S by means of a spring, the head being prevented
from shifting laterally by any suitable means. In the surface R is formed a port U
communicating with a passage T leading from the lower end of the cylinder.
On the upstroke of the piston, it draws in air through the passage T, on the
descent of the piston it forces the air through the same passage into a port in the
head S through the port U when this is brought opposite the same.
I will describe the action of the pump for this purpose more fully. The crank
being made to rotate in the direction of the arrow, the piston when in its lowest
position will hold the cylinder in the middle position shewn on the drawing, in
which the head S is situated in the centre line of the cylinder while the port U is
situated closely at the side thereof, uncovered and also in its middle position.

page_text: By the rotation of the crank the cylinder rocks to the right, so that the port. U
moves away from the head, remaining uncovered, so that the rising piston can
draw air in through passage T. On completing a quarter revolution, that is, at
the middle position of the piston, the cylinder is at its greatest distance to the
right of the centre line, and then begins to return, the port U still remaining free
to admit air till the end of the suction stroke, when it will be about to pass behind
the head S, so that on the commencement of the downstroke of the piston, when
the cylinder will begin to move to the left of the centre line, the port U in passing
behind the head and in front of the port of the latter, the descending piston
will force the air from the cylinder through such port into a pipe V connected
therewith.
The port of the head being of greater width than the port U it will be seen that
the communication between the two will be maintained while the port U is moving
first to the left during the first half of the downstroke, and then back to the right
during the second half of such stroke, until at the end of the latter it will have
again passed beyond the head, into the position shewn.
On the completion of the forcing stroke, the air pressure cannot escape back out
of the pipe V because the head S is always pressed airtight against the face R of the
cylinder.
This pump consequently maintains by its continued action a store of compressed
air in the valve chamber B Fig. 1 with which the pipe V communicates, so that on
the upstroke of the piston C, the valve D being opened by a cam, a portion of the
compressed air will escape through pipe E and will issue as a jet immediately over
the orifice of the petroleum conduit f situated at right angles thereto, and, as before
described, draws a certain quantity of petroleum from the vessel G and carries it
with it in the form of spray together with a further quantity of air drawn in through
the pipe L, past the valve H into the cylinder space J, thus forming a charge
consisting of finely divided petroleum spray and air, the petroleum of which becomes
effectually vaporised on contact with the heated recessed bottom K of the cylinder,
the charge being subsequently fired in the usual manner.
In order to maintain a constant level of the petroleum in the vessel G, there is
arranged above the same a supply tank M from which it is allowed to drip into G
through a cock N so as to be slightly in excess of the amount used, the surplus
flowing off through the overflow pipe O into the receptacle P.
The valves D and H are both actuated by suitable cams driven by the engine, and
timed so as to open them at the required moment.
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
9
1. In petroleum motor engines, supplying the petroleum from a vessel G in which
a constant level is maintained, through a pipe F to the admission chamber of the
engine where it is drawn in by means of a jet of compressed air issuing at right
angle to the petroleum supply, the mixture so formed being drawn together with a
further supply of air past a valve, cock, or slide H into the heated vaporising
space of the cylinder by the suction stroke of the piston, substantially as herein
described.
2. In petroleum motor engines, supplying the petroleum through a pipe F from
which it is drawn by means of a jet of compressed air issuing at an angle thereto
through the pipe E leading from a compressed air reservoir B, the supply of air to
pipe E being regulated by a valve D substantially as described with reference to
Fig. 1 of the drawings.
3. In petroleum motor engines the combination of a petroleum supply pipe F,
from which the petroleum is drawn by an air jet passing from a compressed air
reservoir B, with an oscillating air pump A, having a slide surface R against which
a stationary head S is pressed, and in which during the upstroke of the piston air
is drawn in through port U and passage T, while during the downstroke of the

page_text: piston such air is forced through passage T and port U into the pipe V of the head
which leads the air into the chamber B substantially as herein described with
reference to Figs. 1, 2 and 3 of the drawings.
4. In petroleum motor engines, the combination of a petroleum supply pipe F
from which the petroleum is drawn by an air jet, in combination with a receptacle G
in which the petroleum is maintained at a constant level by means of a supply tank M
cock N and overflow pipe O, substantially as described.
Dated this 25th day of March 1890.