Improved Automatic Steam Governor for Controlling Winches and other Motors.
Year: 1892

page_text: Date of Application, 5th May, 1892
Complete Specification Left. 1st Feb., 1893-Accepted. 8th Apr., 1893
PROVISIONAL SPECIFICATION.
Improved Automatic Steam Governor for Controlling Winches and
other Motors.
I, WILLIAM COOKE of Storeton Road, Oxton, in the County of Chester,
Engineer, do hereby declare the nature of this invention to be as follows:-
The objects are to prevent racing and consequent damage to winches and motors
particularly those on board ship, and to economize steam.
For the above purposes I make a valve governor which accommodates itself to
the load on the winch crane or other motor; in other words when the motor is
running without a load it will move or revolve at a slow speed with a minimum
quantity of steam, and when a load is on steam in sufficient quantity will be admitted
to the engine or motor to afford the necessary force.
One form of apparatus consists of a valve case containing a valve which seats
within a recess and is held in position by means of a spring. The said spring
abuts against the valve and against a piece actuated by the usual screw and handle.
The valve is made with an extension which surrounds the spring and passes through
a stuffing box in the valve case.
Per pro J. T. KING,
J. Johnson,
Agent.
COMPLETE SPECIFICATION.
Improved Automatic Steam Governor for Controlling Winches and
other Motors.
I WILLIAM COOKE of Storeton Road Oxton, in the County of Chester,
Engineer 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 :-
The objects are to prevent racing and consequent damage to winches and motors
particularly to those on board ship, and to economize steam.
For the above purposes I make a valve governor which accommodates itself to
the load on the winch, crane, or other motor; in other words,-when the motor is
running without a load, it will move or revolve at a slow speed with a minimum
quantity of steam, and when a load is on, steam in sufficient quantity will be
admitted to the engine or motor to afford the necessary force.
One form of apparatus consists of a valve case containing a valve which seats
within a recess and is held in position by means of a spring. The said spring abuts
against the valve and against a piece actuated by the usual screw and handle. The
valve is made with an extension which surrounds the spring and passes through a
stuffing box in the valve case.
Fig. 1 is a transverse section of a governor constructed in the form above
described. a is the valve casing made with an inlet-way b, connected to the generator
and outlet-ways c connected to the winch or other motor valve chests. d is a valve
which seats within a recess e in the valve case. The said valve is held in position
by means of a spring f which abuts against the said valve and also against the piece
or block g which is provided with a screwed stem h. The screwed stem h takes
k hand-wheel
into a nut i which rotates in bearings ; secured to the valve case a.
for giving motion to the nut i. 1 valve spindle passing freely through the piece or

page_text: block g and stem h. m nuts screwed on the end of the valve spindle l. o extension
or sleeve secured to the valve d so as to surround the spring and pass through a
stuffing box in the valve case.
The action of the apparatus is as follows:-When there is a little or no load on
the winch or motor, steam acts effectively against the resilience of the spring on
that part of the valve only which fits within the recess e and the said valve is only.
slightly raised from its seat, but as the load increases, steam acts to a greater or
less extent on the enlarged portion of the valve above the recess and the valve is
raised further from its seat against the resilience of the spring so as to allow the
required quantity of steam to do the required work to flow to the winch or motor.
By turning the hand wheel in one direction the spring is compressed so as to hold
the valve more firmly to its seat and shut off steam altogether if desired.
the hand-wheel is turned in the other direction the tension of the spring is reduced
and the valve may be raised from its seat by the stem habutting against the nuts m
on the valve spindle. It will be observed that whilst the valve is in the recess
only sufficient steam can pass to cause the winch or motor to run freely without
appreciable load thereon.
When
Fig. 2 is a vertical section of a modified governor, here a cock q is used instead
of the hand wheel for shutting off steam. The valve d is here made with a spherical
face so as to obtain more gradual increase of steam way when opening and instead
of the said valve fitting into a recess it is made with a way d¹ which allows sufficient
steam to pass to the winch or motor to allow it to run freely when there is not
sufficient load thereon to cause the back pressure of the steam to raise the valve
from its seat. The upward extension or sleeve o is provided with packing ŕ to
make a joint with the valve case instead of passing through a stuffing box. s is a
lever secured to a sleeve t on the valve stem for raising the valve from its seat.
The tension of the spring f is adjusted by turning the screwed stem / through its
nut in the valve cover u by means of a head ' on the said screwed stem. x is an
escape way for any steam passing the packing into the said valve case cover u.
Fig. 3 is a vertical section of a further modification in which a bye-pass vis
used to allow steam to pass to the winch or motor when running light. The area
for passage of steam is adjusted by means of the screw-plug v. The screwed
stem and its turning head here enclosed in a cap w so that the whole of the
parts may be locked up if desired.
The valve covers in Figs. 2 and 3 fit inside the valve cases so as to form seats
against which the extensions or sleeves o rest when the valves are fully raised
and so prevent leakage of steam into the said covers.
In all the above views equivalent parts are denoted by the same letters of
reference.
When the governor is used for controlling main engines, the operating levers,
handles, and wheels are placed in convenient positions for those in charge.
It will be evident that many modifications of apparatus may be made for
carrying my invention into practice besides the three shown.
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
In governors for winches and motors a valve held to its seat by an adjustable
spring and raised therefrom by means of steam acting on different areas substan-
tially in the manner and for the purpose set forth.
Per pro J. T. KING,
W. B. Johnson,
Agent.