Improvements in the Method of Governing Steam Engines, and in Apparatus for Effecting the same.
Year: 1893

page_text: ate of Application, 2nd May, 1893
Complete Specification Left, 31st Jan., 1894-Accepted, 3rd Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in the Method of Governing Steam Engines, and in
Apparatus for Effecting the same.
I HENRY SHEPLEY BOOTH of 6 Hall Street St. Peters Manchester Packer
do hereby declare the nature of this invention to be as follows:-
It consists of an arrangement wherein any ordinary centrifugal governor is
connected with a small ☐ valve the action of which allows steam from the boiler
to operate upon one side or the other of a piston to the rod of which the valve for
controlling the admission of steam to the engine cylinder is attached. When the
speed of the engine is normal the D valve closes both ports. When the speed
falls the governor actuates the D valve and allows steam to operate upon the
side of the piston which opens the controlling valve or vice versa. In place of
steam I may use condensed water exposed to the pressure of the steam; and
in place of a piston I may use a ram or plunger actuated in one direction by the
pressure of the water at the same time compressing a spring, and in the other
direction by the release of the spring.
D
1000
COMPLETE SPECIFICATION.
Improvements in the Method of Governing Steam Engines, and in
Apparatus for Effecting the same.
I, HENRY SHEPLEY BOOTH, of 6 Hall Street, St. Peter's, Manchester, in the
County of Lancaster, Packer, 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 is intended primarily to be applied to steam engines running
at a high speed. the load upon which is, constantly being or liable to be varied
and is designed to provide a more efficient governor whereby the steam admission
valve is held open to the required degree, after the engine has resumed its
normal speed, to give the necessary amount of steam for the load on the engine
or the work being done.
It consists in the combination with a centrifugal governor of ordinary type of
a cylinder with piston or plunger actuated by water under the pressure of the
boiler and a suitable D or other controlling valve the rod of this valve being
connected with the centrifugal governor and the rod of the piston or plunger with
the steam admission valve.
The invention will be fully described with reference to the accompanying
drawings in which as an example a section in diagrammatic form is shown by way
of illustration.
The engine is fitted with a centrifugal governor of any ordinary or convenient
type and with any ordinary form of equilibrium or throttle valve to control the
admission of steam neither of which is shown on the drawings.
Between the centrifugal governor and the steam controlling valve is interposed
the present invention.
A cylinder A is provided with ram or plunger B working therein the rod C of
which is connected with and operates the steam admission or throttle valve.

page_text: Attached to or connected with the cylinder A is a valve chest D in which is placed
a D or other valve E to control the ports d and e. The rod F of the valve E
is connected with the centrifugal governor operated by the engine and the
valve is raised and lowered thereby. The valve chest D is connected with a
reservoir or condenser G by the pipe H and the condenser is also connected
with the boiler or other source of pressure by the pipe 1. The cylinder A is
filled with water or other liquid and communication between it and the reservoir
or condenser G is established through the pipes H and H¹ and the valve chest D.
The ram B in the cylinder A is moved in one direction by the pressure of water
upon it and in the other direction by the spring K fitted on the rod C and pressing
against the adjusting or regulating nut k.
Instead of the cylinder A being fitted with a plunger or ram such as B it may
be provided with a piston and ports opening into it one on each side thereof but at
present I prefer the arrangement of plunger and spring shown.
The position of the several parts may be arranged as found most convenient
according to the situation of the governor and steam valve either close together. or
arranged at some distance apart and connected by the pipes H and H.
In operation the valve E is moved to and fro by the centrifugal or other
governor, when the speed of the engine is normal the valve E closes both ports d
and e and cuts off all communication with the cylinder A and the plunger B remains
steady and stationary. When the speed of the engine falls the valve E is moved
to open the port d and the pressure of the water from the reservoir G forces back
the plunger B and opens the steam admission valve. to which it is connected.. As
soon as the speed of the engine is raised to normal the valve E moves back again
and closes the port thus locking or holding the plunger B in the position which
allows the admission of sufficient steam to the engine for normal running. When
the speed of the engine rises the valve E opens the port d to the exhaust e and
allows the water to flow from the cylinder A the plunger being forced inwards by
the spring K this movement of the plunger closes the steam admission valve and
when the speed is reduced to normal the valve E again closes the port d and the
plunger is again locked to retain the valve in that position.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The governing of steam engines by means of a cylinder and plunger or piston
connected to the steam admission valve actuated by water under pressure and
controlled by a valve operated by the centrifugal governor substantially as and for
the purpose described.
2. In apparatus for governing the speed of steam engines the combination with
the ordinary centrifugal governor and the steam valve of a cylinder and plunger or
piston actuating the steam valve a slide valve actuated by the centrifugal governor
which admits water under pressure to the cylinder and a reservoir or condenser con-
nected with the boiler by which the water is forced into the cylinder substantially
as described. and shown."
Dated this 20th 1 of T
1904
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents..