Improvements in Vaporizing Apparatus for Petroleum Engines and the like.
Year: 1898

page_text: Date of Application, 22nd June, 1898-Accepted, 23rd July, 1898
COMPLETE SPECIFICATION.
Improvements in Vaporizing Apparatus for Petroleum Engines and
the like.
I, HENRIK AUGUST BERTHEAU, of Mälarvarfvet, Stockholm, in the Kingdom of
Sweden, 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 vaporizing of the motive or driving fluid in petroleum and similar engines
has heretofore been effected in such a manner that at certain intervals predetermined
quantities of the said fluid is admitted to the vaporizer, whereby the exact quantity
of gas or vapour necessary for each stroke of the engine is produced.
This method however is only practical in the larger types of engines, where con-
siderable quantities of the motive fluid are required.
In the sinaller types of engines the inlet openings for the liquid are very small and
such engines have in consequence the inconvenience that the said inlet openings
easily become stopped for instance by rust, even if protecting arrangements are
provided.
The present invention relates to a device by means of which this inconvenience is
entirely obviated.
In the accompanying drawing,
Figure 1 shows in vertical longitudinal section a part of a two-stroke motor,
provided with the improved device.
Figure 2 is an end view of the same, and
Figure 3 is a plan thereof.
The device consists of a conical mantle a formed at or secured to the end of the
cylinder b, which is opposite to the motor shaft, the said mantle thus forming a
prolongation of the cylinder. Around this mantle or conical cylinder end a is wound
a quantity of wick c which is held in position by means of grooves in the mantle.
The wicks hang down in a receiver & for the motive fluid, which may for instance be
petroleum. The conical end is on its lower side provided with a valve e and has on
its outer end a common fuse f. Thus if the air between the conical cylinder end
and the outer casing is heated, a vaporizing of the petroleum absorbed by the wick
from the receiver takes place.
When the motor is to be started the outer casing g is heated from the outside by
means of a lamp.
After a few revolutions the lamp may be removed and the necessary vaporizing
heat is then produced by the explosions in the cylinder.
As shown in the drawing, the vaporizing chamber communicates with the opposite
end of the motor cylinder by means of the pipe h and the valve k and at the same
side of the piston there is also arranged an inlet valve for the air.
The device operates in the following manner :-
into
When the piston moves forward atmospheric air is drawn into the cylinder through
the valve l. At the next stroke the air is forced through the valve k and pipe
the vaporizing chamber, in which it is mixed with petroleum gas or vapour.
As soon as the edge of the piston i passes the outlet m and the exhausted motive
fluid escapes through the same and the pressure in the cylinder is reduced, the gas

page_text: mixture flows into the cylinder from the vaporizing chamber through the valve e, and
is compressed by the compression stroke of the cylinder and then ignited, after which
the same series of operations is repeated.
The above described vaporizing device may of course be also employed in a four-
stroke-motor and the necessary quantity of air may be drawn into the cylinder
instead of being as in the above described example forced into the cylinder. In a
suction device such as that above described, the vaporizing chamber is as usual
provided with an automatically operating valve.
The size of the conical end, the number of wicks and the size of the other parts of
the vaporizer will of course have to be made in accordance with the size of the
motor, in such a manner that neither a greater nor a smaller quantity of gas is formed
than is required for the production of the correct mixture. This arrangement of the
parts according to the size of the motor however pre-supposes, that there is no
regulating device, which admits more or less gas in the cylinder in proportion to the
consumption of power. Such a regulating device would in the present invention not
be used with advantage, as there would be either a deficiency or an excess of gas in
the vaporizing chamber. This arrangement will thus not be applicable for engines,
in which a variable vaporizing takes place, but is principally intended for motors with
a constant load for instance for driving pumps.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
A vaporizing apparatus or device for petroleum engines, consisting of a mantle-
shaped cylinder end, tube or the like communicating with the motor cylinder, on the
outside of which a number of wicks are arranged which hang down into a receiver for
the motive fluid, whereby the said mantle shaped end forms a vaporizing chamber,
communicating by means of valves with the motor cylinder as well as with the
atmospheric air, in order to vaporize the liquid, absorded by the wicks by means of
the explosion heat.
1430 1000.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.