An Engine Governor.
Year: 1891

page_text: Date of Application, 12th Jan., 1891
Complete Specification Left, 25th Aug., 1891-Accepted, 26th Sept., 1891
PROVISIONAL SPECIFICATION.
An Engine Governor.
I, AUGUST RIEDINGER, of the Kommanditgesellschaft für Popp'sche Druckluft-
anlagen August Riedinger & Co., of Augsburg, in the Empire of Germany,
Manufacturer, do hereby declare the nature of this invention to be as follows:-
This invention consists in an engine governor, which is intended to interpose in
the opening and closing of the valve which controls the admission of motive fluid
to the cylinder of an engine.
The rod of the valve is lifted periodically by an arm on a rod having a recipro-
cating movement on the line of its axis.
According to this invention the said arm is made with an inclined face on which
slides a block intended to lift the valve rod, so that by the sliding of this block
downward or upward on the inclined face of the arm the valve will be opened later
or sooner accordingly. On the reciprocating arm is a sliding weight supported
by a spring or air cushion, said weight being connected to the sliding block
aforesaid.
The reciprocating rod coming to rest at the end of its stroke, the weight by its
momentum will continue to move until the tension of the spring or air cushion
arrests it. The extent of this movement of the weight will depend on the velocity
of the machine and will control also the time of opening or closing of the valve as
aforesaid.
Dated this 12th day of January 1891.
HERBERT & CO.,
Agents for the Applicant.
COMPLETE
SPECIFICATION.
An Engine Governor.
I AUGUST RIEDINGER of the Kommanditgesellschaft für Popp'sche Druckluft-
anlagen August Riedinger & Co. of Augsburg in the Empire of Germany
Manufacturer 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 consists in the engine governor hereinafter described and
illustrated in several modifications in the drawings hereunto annexed which is
interposed in the gear for opening the valve which controls the admission of
motive fluid to the cylinder of the engine.
The governor consists essentially in a weight which is supported upon a
reciprocating rod moving back and forth in conformity with the movement of the
engine, the weight being carried along during such reciprocating movement by
intervention of a spring or air cushion and serving to so control the time of opening
and closing of the valve by the intervention or operation of mechanism connected
to or operated by the movement of the aforesaid weight, that the admission of
motive fluid to the working parts of the engine is governed according to the speed
of the engine. For simplicity the rod which carries the weight may likewise be the
rod which opens the valve for admission of motive fluid, being provided with an
arm projecting therefrom to engage with the stem of the valve. According to this
invention the said arm does not operate direct upon the valve or valve stem but
only through the intermediation of an adjustable part which is controlled by the
weight and by its position causes the rod to open the valve sooner or later according
to the position of the weight.

page_text: In the drawing, Figures 1 to 4 show sectional views of four modified constructions
for carrying this invention into effect. S is the reciprocating rod G the sliding
weight. Fa spring intèrposed to cushion the movement of the weight on the rod.
A the arm on said rod. E the valve tot be opened by rods and closed by a
spring.
-
The arm A may project' under the head D' of 'the stem of the valve E and may
then have its upper face or surface inclined as shown in Figs. 1 and 2 to receive
the sliding block or wedge M. This block or wedge Mis either connected to the
weight G by a link C or it is provided with an arm ending with a roller R to ride
against the side of the weight G which is shaped accordingly and is pressed
against the weight by a strong spring F.
Figs. 3 and 4 show constructions in substance the same except that the inter-
vening part M in place of sliding on an inclined surface on the arm A is hinged or
pivoted to the said arm and is provided with an inclined or step-graded face to
engage with the head or part D which directly opens the valve E.
part M is connected to the weight by a link C while in Fig. 4 the part M has an
In Fig. 3 the
anti friction roller R to move upon an inclined face on the weight as in Fig. 2 and
is held thereto by the spring F¹
As the rod S reciprocates with a velocity equivalent to the velocity of the
engine, the weight G by virtue of its inertia occupies a place on the rod S during
the upward stroke which is higher or lower according as the engine is moving
slowly or quickly; the higher position causes the part M to open the valve sooner,
the lower position causes the valve to be opened later and during the down stroke
the valve will consequently be closed later or sooner respectively since the weight
acts in the manner aforesaid only at the dead point at the bottom of the stroke of
the rod and not, at least effectively, at the upper dead point when the part M is in
contact with the head D of the valve.
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 I
claim is ;-
1). An engine governor consisting of a weight adapted to slide upon a recipro-
cating rod and governing an adjustable intervening part upon the reciprocating arm
which lifts the motive fluid admission valve so that the inertia of the weight upon
the rod causes it to assume a position on said rod and thus govern the time of
opening and closing said valve according to the speed of the engine.
2). An engine governor consisting of a weight supported by spring or air cushion
on a reciprocating rod and controlling an intervening part movable upon an arm on
said rod so that the position given to said part by the position of the weight, due to
the speed of the engine as described, causes the said arm to open and close the
motive fluid admission valve substantially as herein set forth.
3). An engine governor consisting in the combination of the reciprocating rod S
the weight G thereon, the spring or air cushion F, the arm A having an inclined
face, the block M sliding on said face and connected to or controlled by the said
weight G as herein described for the purpose set forth.
Dated this 25th day of August 1891.
HERBERT & Co.,
18, Buckingham Street, Strand, London, W.C., Agents to Applicant.