Improvements in Governors for Gas and Petroleum-motors.
Year: 1891

page_text: Date of Application, 25th Apr. 1891
Complete Specification Left, 16th Jan., 1892-Accepted, 20th Feb., 1892,
PROVISIONAL SPECIFICATION.
Improvements in Governors for Gas and Petroleum-motors.
I, ADOLPH ALTMANN, of 68, Acker Strasse, Berlin, N., Germany, Manufacturer,
do hereby declare the nature of this invention to be as follows:-
My invention relates toan improved govern or for gas- or petroleum-motors which
shuts off the gas at the moment when the speed of the motor exceeds a prede-
termined limit. This I arrive at by providing a revolving shaft with cams, one of
which is laterally actuated by the governor-spindle, and the other itself operates
on a double lever, thereby at times shutting the gas-valve.
In order to make my invention more clear, I refer to the accompanying drawing,
in which similar letters denote similar parts throughout the several views, and in
which :-
:-
Fig. 1 is an elevation of the governor showing the same in the position it would
assume when running at a high speed and therefore closing the valve.
Fig. 2 is a part of the same in a position running at a low speed and not effecting
the valve.
Fig. 3 is a section of the governor, drawn on the line - of Fig. 1 at a time
when running at a low speed.
The shaft a' is provided with a socket a, revolving therewith by aid of a feather
and groove and being therefore able to slide up and down the shaft a¹.
At one
end thereof is a cam a², which in cross section relatively to the plane of a is of
triangular shape. Pressing against a collar or cup c, fastened to the shaft a' by
studs d is a spiral spring a³ tending to force the socket a continually towards the
governor-spindler, that is to say, into the position shown in Fig. 2.
Herein the
At
conical foot of the governor-spindle will be lifted up by the cam a².
the same time a roller 61 being attached to the rear end of a double lever b,
which operates in connection with the gas-valve, runs upon a second can a', also
cast on or attached to the socket a, whereby the gas-valve is held open and the
cylinder may be filled with the gases of combustion.
When however the speed of the motor surpasses a certain height, the governor-
balls, while spreading asunder, will, by aid of the inner arms c', c¹, press the
spindle downward. The cam a² will in its course of revolution strike against
the toe-piece r', and by its oblique edge as the cam will be forced aside while over-
coming the pressure in the spiral-spring a³. Thus the roller b¹ will not be touched
by the cam a, the gas-valve being closed at the time the piston tends to fill the
cylinder. This is the position the governor is in, illustrated by the Figure 1.
The oblique edge as of the cam a² is somewhat slanting inwardly hence its triangular
shape before mentioned, that is to say, it is cut to the same angle as the conical
toe-piece r, so as to correspond therewith and thus prevent the cam from slipping
away, when once caught hold of by the toe-piece. The spiral-spring o tends to
raise the spindle when at liberty to do so, but when the toe-piece is caught hold
of by the cam a², the governor balls cease to be actuated by the said spring o.
The cam a², while slanting along side of ¹, presses the spiral-spring a³ together, as
hereinbefore mentioned, but as soon as the toe-piece has left the cam a², the
spiral-spring a will push the socket a into its former position, in which it will
remain if the motor now runs slower, and thus the governor-balls sink and permit
the spiral spring o, to lift the governor-spindler, and again the cam a' may run
under the roller b', thus opening the gas-valve at the requisite periods. This
position is illustrated in Fig. 2.

page_text: I finally point out that this arrangement may not only be made use of to regulate
the gas-inlet but also the exhaust; the mechanism being precisely the same.
Dated this 18th day of April 1891.
ADOLPH ALTMANN,
By Geo. Thos. Hyde,
4, Moorfields, London, E.C., Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Governors for Gas and Petroleum-motors.
I, ADOLPH ALTMANN of 68, Acker Strasse, Berlin, N., Germany, Manu-
facturer, 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 an improved governor for gas- or petroleum-motors
which shuts off the gas at the moment when the speed of the motor exceeds a
predetermined limit. This I arrive at by providing a revolving shaft with cams,
one of which is laterally actuated by the governor-spindle and the other itself
operates on a double lever thereby at times shutting the gas-valve.
In order to make my invention more clear, I refer to the drawings filed with my
Provisional application in which similar letters denote similar parts throughout the
several views, and in which:-
Fig. 1 is an elevation of the governor showing the same in the position, it would
assume when running at a high speed and therefore closing the valve.
Fig. 2 is a part of the same in a position running at a low speed and not effecting
the valve.
Fig. 3 is a section of the governor, drawn on the line x-x of Fig. 1 at a time
when running at a low speed.
The shaft a is provided with a socket a revolving therewith by aid of a feather
and groove and being therefore able to slide up and down the shaft. At one end
thereof is a cam a³, which in cross-section relatively to the plane of a is of triangular
shape. Pressing against a collar or cup fastened to the shaft by studs & there is
a spiral spring a tending to force the socket a continually towards the governor
spindle, that is to say, into the position shown in Fig. 2. Herein the conical foot r¹
of the governor-spindle will be lifted up by the cam a². At the same time a
roller being attached to the rear end of a double lever b, which operates in
connection with the gas-valve, runs upon a second cam a* also cast on or attached
to the socket a, whereby the gas-valve is held open and the cylinder may be filled
with the gases of combustion.
r
When however the speed of the motor surpasses a certain height, the governor-
balls, while spreading asunder, will by aid of the inner arms c¹ c¹ press the spindle
downward. The cam 2 will in its course of revolution strike against the toe-
piece, and by its oblique edge as the cam will be forced aside while overcoming
the pressure in the spiral-spring a³. Thus the roller will not be touched by the
cain a, the gas-valve being closed at the time the piston tends to fill the cylinder.
This is the position the governor is in, illustrated by the Figure 1. The oblique
edge as of the cam a² is somewhat slanting inwardly, hence its triangular shape
before mentioned, that is to say, it is cut to the same angle as the conical toe-
piece r¹, so as to correspond therewith and thus prevent the cam from slipping
away, when once caught hold of by the toe-piece. The spiral-spring o tends to
raise the spindle when at liberty to do so but when the toe-piece is caught hold of
by the cam a² the governor-balls cease to be actuated by the said spring o. The
cam 2, while slanting alongside of presses the spiral-spring a together as
hereinbefore mentioned, but as soon as the toe-piece has left the cam a², the

page_text: spiral-spring a will push the socket a into its former position, in which it will
remain, if the motor now runs slower and thus the governor-balis sink and permit
the spiral-spring o to lift the governor-spindle r, and again the cam a' may run
under the roller 6', thus opening the gas-valve at the requisite periods. This
position is illustrated in Fig. 2.
I finally point out that this arrangement may not only be made use of to
regulate the gas-inlet but also the exhaust; the mechanism being precisely the
same.
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 governor for gas or petroleum-motors, consisting of the socket a being made
to revolve with a shaft a by a feather and groove, and influenced by a spiral-
spring a³ and provided with two cams a' and a² the latter being of triangular shape
in cross-section relatively to the plane of a, in combination with a ball-governor the
spindle whereof has a conical toe-piece and is elastically raised by a spiral-
spring o, for the purpose set forth.
1000
ADOLPH ALTMANN,
By Geo. Thos. Hyde,
4, Moorfields, London, E.C., Agent for the Applicant.