An Improved Combined Vaporizer and Igniter for Oil-motors.
Year: 1895

page_text: Date of Application, 23rd July, 1895-Accepted, 24th Aug., 1895
COMPLETE SPECIFICATION.
An Improved Combined Vaporizer and Igniter for Oil-motors.
I, CARL SPIEL, of Cannstatt, in the Kingdom of Württemberg, German
Empire, 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
n and by the following statement :-
This invention refers to oil-motors, in which the intense heat produced by the
explosion of the mixture of oil and air is accumulated by suitable parts arranged
in the rear of the working-cylinder within a special explosion-chamber, and is used
for igniting the said mixture when the latter is compressed. My improvement in
oil-motors of the kind stated relates to the combination of the igniter proper, with
a hollow vaporizer covering or inclosing the igniter at the rear and at the sides, but
leaving it uncovered in the direction to the piston of the motor. Therefore, instead
of leading the dispersed oil upon, and into the igniter for being vaporized by the
heat of the same, and thus letting the igniter act as a vaporizer, too, I now employ
a special vaporizer, the shape and arrangement of which is such as to hinder the oil
from touching the igniter proper before it is vaporized. The purpose of my
improvement is to prevent the igniter from becoming sooted by the residues of
the vaporization, and thus to secure the proper action of the same.
Referring to the accompanying drawing, a is the igniter and b the vaporizer.
c is the inlet for the air carrying with it the dispersed liquid hydrocarbon. This
inlet need not indispensibly be arranged at the rear of the explosion-chamber, but
may, if desired, be arranged at the side thereof, and is arranged in either case so as
to lead the mixture of air and oil onto the outer surface of said vaporizer b, and
prevent the same from coming prematurely in contact with the igniter.
The intense heat produced by the explosion is accumulated by the vaporizer as
well as by the igniter. On sucking the explosive mixture into the cylinder at the
first stroke of the (four-stroke) cycle, the oil carried by the air is vaporized by the
heat of the vaporizer b, and the mixture then enters the working-cylinder d.
Thereafter the mixture is compressed by the returning piston, and is forced also
into the interior of the vaporizing-body b, thus coming in intimate contact with
In the moment of highest compression the
every portion of the hot igniter a.
explosive mixture is ignited by the combined effect of the heat of the igniter, and
that produced by the compression. This method cf operation, however, is known
and does not form a part of my present invention.
I wish it to be understood, that the igniter need not indispensibly consist of a
number of co-axial discs, as shown in the drawing, but may be of any suitable
configuration, provided, there be combined in said configuration a comparatively
small quantity of material with a comparatively large area of surface. The igniter
for instance, be composed of a number of parallel straight rods, or of one or
more spirals.
may,
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 1
claim is
In an oil-motor having an automatic igniter arranged in a special, non-cooled
explosion-chamber, and adapted to accumulate the heat generated by the explosion,
5 the combination with said igniter, of a hollow vaporizer arranged between the walls
of said explosion-chamber and the igniter, and inclosing the latter at its rear and

page_text: sides, but leaving it uncovered in the direction to the piston, said vaporizer being
adapted to prevent the igniter from coming in contact with the dispersed, non-
vaporized oil, and from being sooted by the residues of the same, substantially as
described.
Deted this and der of July 1805
F. BOSSHARDT. & Co.,
4 Corporation Street, Manchester, Agents for the Applicant.