IMPROVEMENTS IN APPARATUS FOR GOVERNING ENGINES
Year: 1884

page_text: THOMAS ROBERT HAY FISKEN of 22, Lorne Terrace, East Greenwich, S.E in the
County of Kent Engineer, and CHARLES ANTHONY DUVALL of 4 North Terrace
Guildford in the County of Surrey, Engineer do hereby declare the nature of
their invention for IMPROVEMENTS IN APPARATUS FOR GOVERNING ENGINES to
be as follows::-
A hollow spindle is mounted loosely in a bracket fixed upon the steam chest of
the engine within this hollow spindle is placed a flat rack having teeth upon two
sides the rack is made round at both ends and works through bushes placed in each
end of the hollow spindle the rack is actuated by toothed segments which take
into the rack, the segments are cast or fixed upon the end of levers upon the other
end of these levers are cast or fixed the governor balls the levers are mounted
loosely in the center of the circle to which the segments are made upon a pin held.
in brackets fixed or cast upon the hollow spindle. Within the hollow spindle and
around the round part of the rack a spiral spring is placed one end of which bears
against a shoulder formed upon the rack the other end bears against one of the
bushes in the end of the hollow spindle through which the rack works this bush
is made to slide out and in so as greater or less pressure can be put upon the
spring. The position of this bush is regulated by a lever which presses upon the
out end of the bush one end of the lever is held loosely in a bracket fixed to
the main bracket, the other end of the lever works upon a rod one end of the rod
is loosely fixed to the main bracket, A thumb-screw works upon the other end of .
the rod and holds down the lever, As the thumb-screw is turned up or down upon
the rod little or great pressure is put upon the spring. The thumb-screw can be
moved while the governor is running. Motion is given to the hollow spindle by
belt or gear as is most convenient, It will be observed that if motion is given to
the hollow spindle the balls will fly out and through the levers and segments
actuate the rack and cause the rack to move out and in as the balls fly out
or in Again the balls will fly out according to the speed of the hollow spindle,
and as the spring acts against the centrifugal force of the balls it takes great or less
speed according to the power of the spring, The power of the spring is controlled
by the thumb-screw and thus the speed of the engine is regulated, The out and
in motion of the rack can be conveyed direct by a rod to the ordinary equilibrium
valve or wing valve or by any suitable arrangement of levers.

page_text: Improvements in Apparatus for Governing Engines.
THOMAS ROBERT HAY FISKEN of 22 Lorne Terrace East Greenwich in the
County of Kent, Engineer and CHARLES ANTHONY DUVALL, of 4, North Terrace
Guildford in the County of Surrey Engineer, do hereby declare the nature of our
invention for IMPROVEMENTS IN APPARATUS FOR GOVERNING ENGINES, 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 certain improvements in apparatus for governing
engines. The improved governor and the mode of action are illustrated on the
accompanying sheet of drawings fig. 1. and 2. respectively represent a longitudinal
and partly sectional elevation and transverse elevation views of the improved
governor. In fig. 1. 1, is a hollow spindle having journals formed upon it at 2, and 3,
and which is mounted loosely in the bushes 4, and 5, these bushes form part of the
main bracket the bracket being fixed upon the steam chest or on any other part of
the engine as is most convenient. 6, is a toothed rack having teeth upon two
sides or having the teeth all round it as at 7, the rack 6, is made round at both
ends and works through the bushes 8, and 9, placed in the ends of the hollow
spindle, 10, and 11, are toothed segments which take into the rack as shown at 12.
13, and 14, are levers cast or fixed upon the segments, 15, and 16, are the governor
balls cast or fixed upon the ends of the levers, the segments are mounted loosely
upon the pins 17, and 18, which pins are held in the brackets 19, and 20, cast or
fixed upon the hollow spindle Within the hollow spindle 1, and around the round
part of the rack 6, the spiral spring 21, is placed one end of which bears against
a shoulder formed upon the rack by the teeth at 22; the other end of the spring
bears against the bush 9, The bush 9, is made to slide out or in within the hollow
spindle, The position of the bush 9, is reguladed by a lever fig. 2. 24, is the
lever which bears upon the bush 9, One end of the lever 24, is mounted loosely
upon the bracket. 25, the bracket 25, is fixed to the main bracket 4, the other end
of the lever works upon the rod 26, One end of the rod 26 is mounted loosely to
the main bracket at 27, 28, is a thumb-screw which works upon the other end of
the rod 26, and holds down the lever 24, as the thumb-screw is turned up or down
upon the rod more or less pressure is put upon the spring, The position of the
thumb-screw can be altered while the governor is in motion 29. is a pin which is
made fast in the rack 6, 30, is a slot in which the pin works the pin prevents the
rack from turning round independently from the hollow spindle, 31, is a pulley
cast or fixed upon the hollow spindle, Motion is given to the hollow spindle by
belt or gear as is most convenient, The action of the Invention is as follows when
motion is given to the. hollow spindle by the engine the balls will fly out and
through the levers and segments will actuate the rack and will cause the rack to
move out and compress the spring and thus an out and in motion will be given to
the rack as the balls fly out or in, Again the balls will fly out according to the
speed of the revolutions of the hollow spindle and as the spring acts against the
centrifugal force of the balls it takes more or less speed according to the power
of the spring to make the balls fly out, and as the power of the spring is controlled

page_text: by the thumb-screw it will be observed that if the thumb-screw is moved up upon
the rod there will be less pressure upon the spring and the balls will take a less
speed to make them fly out, and if the thumb-screw is moved down upon the rod
there will be greater pressure upon the spring and it will take more speed to make
the balls fly out and thus if the engine is wanted to run at a quick speed the
thumb-screw is screwed down upon the rod and if wanted to run at a less speed
the thumb-screw is screwed up upon the rod. The out and in motion of the rack
is conveyed direct by a rod to the ordinary equilibrium or wing valve of the
engine.
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
First. The hereinbefore described improvements in or applicable to the con-
struction of governors for engines, such improvements consisting of a hollow
spindle, toothed rack placed within the hollow spindle actuated by toothed segments
and spiral spring around the rack, substantially as described with reference to the
accompanying drawings.
Second. The use and imployment of a lever acting upon the bush 9, the position
of the lever and bush being regulated by the thumb-screw and so arranged that
the position of the bush can be altered while the governor is in motion substantially
as described with reference to the accompanying drawings or any mere modification
thereof.