Governor for Internal Combustion Motors.
Year: 1899

page_text: Date of Appl.cation, 9th Aug., 1899
Complete Specification Left, 27th Apr., 1900-Accepted, 2nd June, 1900
PROVISIONAL SPECIFICATION.
Speed Governor for Internal Combustion Motors.
We, FRANZ KÜPPER, of Crefelder Strasse 13, and ANSBERT EMIL. VORREITER,
Wilhelm Strasse 77-1, both of Aix-la-Chapelle, in the Empire of Germany,
hereby declare the nature of this invention to be as follows:
The object of our invention is a speed governing appliance combined with the
cam for the actuation of the exhaust valve of an internal combustion motor, so
arranged as to keep the exhaust valve more or less open during the charging or
suction stroke and thus prevent entirely or partially the opening of the suction
valve.
The subsequent explosion is consequently missed or is weaker so that the load
remaining the same, the motor runs more slowly.
Fig.
and Fig.
of the accompanying drawings illustrates our governing device suitable
for a motor working on the Otto cycle. Fig. 2 shews the cam
the governing appliance & separately."
b
so that when
The outward
On the valve shaft w we fit a cam a on which is pivotted a lever
it moves outwards it constitutes an enlargement of the cam ¹.
motion of bis caused by the centrifugal force of the rotating cam a and increases
with the speed of its rotation. A stop d limits the range of motion of the
lever band a spring g may be used to assist the action of centrifugal force. The
outward movement of the lever b is opposed by the spring f which closes the
exhaust valve and tends to press inwards through the medium of roller h.
The tension of the spring f can be adjusted by means of the nut e the sensitive-
ness of the governor being thus regulated at will.
when the
If for instance the spring f has only a slight tension the lever
rotation of the cam is slow, can overcome the pressure of spring f and keep
the valve open until the point 3 of the rotating cam a has passed the roller h
which is the end of the suction stroke.
By increasing the tension of the spring f the centrifugal force overcomes
the force of the spring at a correspondingly later period.
If the centrifugal force is equal to the tension of the spring the valve will
remain open after the point 3 has passed roller h, but the spring f will gradually
press inwards the lever according to the amount of leverage at which it acts,
so that the exhaust valve remains open only during a portion of the suction
stroke. In this case the piston will at the beginning of the stroke suck in com-
bustion gases through the opened exhaust valve r, but later, when the exhaust
valve is closed, fresh gaseous mixture will flow in through the suction valve which
is then opening. The following explosion will in such case not be altogether a
misfire, but it will only be weaker.
This is the normal working of this highly sensitive governor.
Our arrangement presents over the governors used hitherto in connection with
internal combustion motors the advantage of great simplicity and sensitiveness
and of being susceptible of adjustment whilst the motor is running.

page_text: It does not require the exertion of any special power or any special organ and
may be fitted to any existing motor by simply changing the cam.
Dated this 9th day of August 1899.
ABEL & IMRAY,
Agents for the Applicants.
Speed Governor for Internal Combustion Motors.
We, FRANZ KÜPPER, of Crefelder Strasse 13, and ANSBERT EMIL VORREIFER,
of Wilhelm Strasse 77-1, both of Aix-la-Chapelle, in the Empire of Germany,
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 our invention is a speed governing appliance combined with the
cam for the actuation of the exhaust valve of an internal combustion motor, so
arranged as to keep the exhaust valve more or less open during the charging or
suction stroke and thus prevent entirely or partially the opening of the suction
valve.
The subsequent explosion is consequently missed or is weaker so that the load
remaining the same, the motor runs more slowly.
Fig. 1 of the drawings accompanying our Provisional Specification illustrates
our governing device suitable for a motor working on the Otto cycle. Fig. 2
shews the cam a and Fig. 3 the governing appliance separately.
b
The
On the valve shaft w we fit a cam a on which is pivotted a lever b so that when
it moves outwards it constitutes an enlargement of the cam a¹. The outward
motion of 6 is caused by the centrifugal force of the rotating cam a and increases
with the speed of its rotation. A stop & limits the range of motion of the
lever band a spring g may be used to assist the action of centrifugal force.
outward movement of the lever bis opposed by the spring f which closes the
exhaust valve e and tends to press b inwards through the medium of roller h.
The tension of the spring f can be adjusted by means of the nut e the sensitive-
ness of the governor being thus regulated at will.
If for instance the spring f has only a slight tension the lever b when the
rotation of the cam a is slow, can overcome the pressure of spring and keep
the valve open until the point 3 of the rotating cam a has passed the roller h
which is the end of the suction stroke.
If the
will
"When the tension of the spring f is increased, the centrifugal force over-
comes the force of the spring at a correspondingly later period.
centrifugal force is equal to the tension of the spring the valve
remain open after point 3 has passed the roller h, but the spring will gradually
press inwards the lever b according to the amount of leverage at which it acts,
so that the exhaust valve remains open only during a portion of the suction
stroke. In this case the piston will at the beginning of the stroke suck in com-
bustion gases through the opened exhaust valve v, but later, when the exhaust
valve. is closed, fresh gaseous mixture will flow in through the suction valve which
is then opening. The following explosion will in such case not be altogether a
misfire, but it will only be weaker.
This is the normal working of this highly sensitive governor.
Our arrangement presents over the governors used hitherto in connection with
internal combustion motors the advantage of great simplicity and sensitiveness
and of being susceptible of adjustment whilst the motor is running.

page_text: It does not require the exertion of any special power or any special organ and
may be fitted to any existing motor by simply changing the cam.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
A speed governor for an internal combustion motor consisting of a lever pivotted
on the exhaust cam so as to be projected outwards by centrifugal force assisted or
not by a spring, and thus to keep the exhaust valve more or less open during the
charging stroke, substantially as described and for the purpose set forth.
Dated this 27th day of April 1900.
ABEL & IMRAY.
Agents for the Applicants.