Year: 1885

page_text: We, JACOB GOWLAND JOICEY, Manufacturing Engineer, Forth Banks and MICHAEL
WATSON Engineer, Rye Hill, both in the City and County of Newcastle-upon-Tyne
do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in governing apparatus to control and
render uniform the speed of steam engines or other prime movers by automatically
and instantly increasing or diminishing the admission of steam, water or other
operating fluid according to the work of the engine and consists essentially of a
small auxiliary cylinder in which moves a piston with rod projecting at one or
both ends.
The admission of steam water or other fluid to this small cylinder is regulated
by a small centrifugal governor driven from the engine; any variation from the
normal speed of the latter admits steam or other fluid through a valve (preferably
a piston valve) operated by the governor to one or other end of the auxiliary
cylinder giving motion to the piston and, by suitable mechanism connected
with the piston rod, regulates the opening of the steam passages to main engine
cylinders.
The speed of the motion of piston in auxiliary cylinder is regulated by means of
a small cataract cylinder containing oil or other fluid and fitted with a piston and
rod, one end of which is connected to the piston rod of auxiliary cylinder.
The oil or other fluid in its passage from one end of this cataract cylinder to
the other is regulated by a small cock or valve capable of very accurate adjustment
and thus the speed of motion of the cataract piston and through it that of the
piston of auxiliary cylinder are absolutely controlled.
The reciprocating motion of the piston in auxiliary cylinder may be communi-
cated to the main engine valves by any suitable mechanism according to the form
of regulating or expansion valve in use but in the very common case of separate
expansion valves working by right and left hand screws on a valve spindle the
latter may be very conveniently rotated by a pinion working in a rack formed on
end of piston rod of the auxiliary cylinder.
Dosed : 7-1
100

page_text: We, JACOB GOWLAND JOICEY, Manufacturing Engineer, Forth Banks and MICHAEL
WATSON Engineer, Rye Hill both in the City and County of Newcastle upon Tyne
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 improvements in governing apparatus to control and
render uniform the speed of steam engines or other prime movers by automatically
and instantly increasing or diminishing the admission of steam, water or other
operating fluid according to the work of the engine and consists essentially of a
small auxiliary cylinder in which moves a piston with rod projecting at one or
both ends.
The admission of steam, water or other fluid to this small cylinder is regulated
by a small centrifugal governor driven from the engine; any variation from the
normal speed of the latter admits steam or other fluid through a valve (preferably
a piston valve) operated by the governor to one or other end of the auxiliary
cylinder giving motion to the piston and by suitable mechanism connected with the
piston rod, regulates the opening of the steam passages to main engine cylinders.
The speed of the motion of piston in auxiliary cylinder is regulated by means
of a small cataract cylinder containing oil or other fluid and fitted with a piston
and rod, one end of which is connected to the piston rod of auxiliary cylinder.
The oil or other fluid in its passage from one end of this cataract cylinder to the
other is regulated by a small cock or valve capable of very accurate adjustment
and thus the speed of motion of the cataract piston and through it that of the
piston of auxiliary cylinder are absolutely controlled.
The reciprocating motion of the piston in auxiliary cylinder may be communi-
cated to the main engine valves by any suitable mechanism according to the form
of regulating or expansion valve in use but in the very common case of separate
expansion valves working by right and left hand screws on a valve spindle the
latter may be very conveniently rotated by a pinion working in a rack formed on
end of piston rod of the auxiliary cylinder.
DESCRIPTION OF DRAWINGS.
On the accompanying sheet of drawings our invention is illustrated as applied
to rotate a shaft which may operate right and left hand screws acting on expansion
valves of main engine or may be caused to control the admission of steam or other
fluid to the engine cylinder or cylinders either through separate regulating valve,

page_text: A is the auxiliary cylinder fitted with a piston the rod B of which projects
through both ends at one end being connected to the piston rod G of cataract
cylinder F and at the other end to a rack C working in a guide D and rotating a
pinion E on a cross shaft.
Referring to section Figure 3 a pipe H admits steam water or other fluid into
the annular piston valve K the rod L of which is attached to the cross head M
connected by two rods N N to the sleeve O of the centrifugal governor which as
it rises or falls by variation of the speed of main engine opens one or other of the
ports P P and admits the steam or other fluid to one or other side of the piston at
the same time allowing the steam or water on the opposite side of piston to escape
by the pipe Q-The piston in cylinder A moves in either direction against the oil
water or other fluid contained in the cataract cylinder F the resistance depending
upon the area of opening by which the fluid can escape from one side of the
cataract cylinder piston to the other side and this area is capable of extremely
accurate adjustment by means of a hand wheel R acting on the valve or cock S,
and thus the action of the governor while it sensitiveness to any variation of speed
it retained is prevented from too suddenly and uselessly altering the admission of
steam or other fluid to the cylinder or cylinders of main 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 :
For the purpose of controlling the speed of steam engines or other prime movers
the combination of parts consisting of a governor or other automatic mechanism
controlling the admission of steam or other fluid into an auxiliary cylinder, with
the cataract cylinder controlling the action of the said auxiliary cylinder con-
structed and operating substantially as described and shewn.
W. LLOYD WISE,
Agent for the Applicants.