IMPROVEMENTS IN GOVERNORS FOR STEAM ENGINES
Year: 1884

page_text: I GEORGE BANKS RENNIE of Holland Street Blackfriars Road in the County of
Surrey Engineer do hereby declare the nature of my invention for "IMPROVEMENTS
IN GOVERNORS FOR STEAM ENGINES" and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:-
My improvements consist in regulating and maintaining the position of a throttle
valve or other equivalent contrivance for the admittance of steam to the cylinders
of steam engines so that for a given number of revolutions considerable variation in
the power of the engines may be made.
According to my invention an ordinary high speed or other governor of the
character represented by Figures 1 and 2 of the drawings annexed is so arranged
that when the engines are running at their required speed or number of revolutions
the cone friction wheels B. C. of the governor G do not act nor are they in con-
nection with the friction cone wheel A and the gear of the throttle valve for the
admission of steam. If however the speed of the engine and governor is increased
or decreased an upper or lower friction or cone wheel B or C working on the
governor spindle is raised or lowered by the action of the governor in doing which
one or other of the friction cone wheels B or C comes in contact with a third bevil
cone wheel A and so causes it to revolve one way or the other. On the shaft of
this wheel A there is a screw worm D which works into a worm wheel or sector E-
this wheel E is connected with a shaft and lever F or by an arm or boss on the
wheel which acts on the throttle or steam regulating valve of the engine.
The length of the sector of this worm wheel E is so made that when the worm D
has revolved and screwed round the wheel sector E out of the worm D it places
the lever F in a position either to fully open or shut the throttle or steam regula-
ting valve or to hold it in such a position between these two extremes as to
give the necessary supply of steam for the necessary or required number of
revolutions.
DESCRIPTION OF THE DRAWINGS.
The friction cone wheel A. is connected to the shaft and worm wheel of regulating
steam valve.
B and C are friction cone wheels in connection with governor.
The relative position of the wheel A to the wheels B and C is ach as not to ba

page_text: The governor G is driven by the bevil toothed wheel G¹ on the driving shaft G²
as shown or by pulleys and belts as may be desired.
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
•
The improved arrangement and application in a governor for steam engines of
the reversing cones A. B. C. in combination with the worm D and worm wheel or
sector E to actuate the throttle or other valve and the arrangement by which the
cone wheel A. is not in contact with the reversing cones B or C and is consequently
out of gear whon the engines and governor are running at their normal speed-but
when the speed is increased or decreased the throttle or other valve is regulated by
the reversing cone wheels B or C revolving or driving the cone wheel A and thus
by means of the worm and worm wheel or sector D and E either opening or
closing the valve substantially as herein described and represented in the Drawings
annexed.