Improvements in or Pertaining to Engines of Steam Worked Winches, Windlasses, and Steering Gear.
Year: 1886

page_text: Date of Application, 10th Apr., 1886.
Complete Left, 10th Jan., 1887.
Complete Accepted, 11th Feb., 1887.
Improvements in or Pertaining to Engines of Steam Worked
Winches, Windlasses, and Steering Gear.
I, WILLIAM CLARKE, of Nos. 9 and 11 Fenchurch Avenue, in the City of London,
Engineer, do hereby declare the nature of this invention to be as follows-
This invention relates to apparatus whereby the engine of a steam winch or windlass
or steering gear can be caused to work as a compound or as a high pressure engine or
can be stopped by simply moving one handle or lever that controls a double cock, or
a slide valve. The double cock comprises two chambers each containing a three way
plug, these two plugs being connected by means of toothed sectors in such a manner
that the two are operated simultaneously by one handle.
For distinction will call one plug the inlet plug and the other the exhaust plug.
A steam inlet is provided to the chamber of the inlet plug, which chamber is also
connected by means of pipes to the high pressure and low pressure cylinders
respectively. The chamber containing the exhaust plug is connected with the exhaust.
pipe of the high pressure cylinder and with a branch pipe leading to the exhaust
of the low pressure cylinder.
The third way from the chamber containing this plug is connected with the before-
mentioned steam inlet pipe passing from the inlet plug to the low pressure cylinder.
In one position of the controlling handle, the steam inlet is in communication with
the high pressure,cylinder and the exhaust communicates by way of the exhaust plug
with the steam pipe leading to the low pressure cylinder. In this position the engine
works as a compound engine. Upon turning the controlling handle through a
quarter of a revolution, communication will be established between the steam inlet
branch and both the high-pressure and low-pressure cylinders, the exhaust from the
high pressure cylinder being then opened to the exhaust pipe of the low pressure
cylinder. In this position,high pressure steam will be admitted to both cylinders.
Upon turning the controlling handle through another quarter of a revolution the
steam inlet will be closed and the engine consequently stopped."
When using a slide valve instead of the double cock it is arranged in a chamber I
will call the valve chest and is provided with a rod passing through a stuffing, box.

page_text: The said rod is connected to a lever provided with a handle by means of which a
longitudinal movement can be imparted to the valve. The valve face in the valve
chest is provided with four ports. Two of these which may be conveniently arranged
on one side of the centre line of the valve face serve as steam admission ports to the
high pressure cylinder and low pressure cylinder respectively. The other two ports
are in such case situate on the other side of the centre line of the valve face; one of
these leads to the exhaust passage from the high pressure cylinder, while the other is
connected to a branch pipe leading to the exhaust passage of the low pressure cylinder.
In the valve there is a cavity which, at times, establishes communication from the
exhaust of the high pressure cylinder to the steam admission port of the low pressure
cylinder, or to the exhaust port connected to the exhaust pipe of the low pressure
cylinder. In the valve is also arranged a port through which steam can be at times
admitted from the valve chest to the one or the other of the steam admission ports in
the valve face. Steam is admitted to the valve chest in the ordinary way.
In one position of the valve steam is admitted from the valve chest to the high
pressure cylinder through the port in the valve, and the exhaust passage of the high
pressure cylinder communicates by way of the cavity in the valve with the steam pipe
leading to the low pressure cylinder. In this position the engine works as a compound
engine. Upon moving the valve from this position through a distance of about half
its total travel both steam admission ports will be closed by the valve and the engine
consequently stopped. Upon completing the travel of the valve, the latter will
uncover the steam port to the high pressure cylinder and the port in the valve will
coincide with the steam port leading to the low pressure cylinder. Communication
will, therefore, at this time be established between the valve chest and both the high
pressure and low pressure cylinders, the exhaust of the high pressure cylinder being
then opened to the exhaust pipe of the low pressure cylinder through the cavity in
the valve. In this position high pressure will be admitted to both cylinders.
W. LLOYD WISE,
Per F. J. Brougham,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or Pertaining to Engines of Steam Worked
Winches, Windlasses, and Steering Gear.
I WILLIAM CLARKE, of Nos. 9 and 11 Fenchurch Avenue, in the City of London,
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:-
This invention relates to apparatus whereby the engine of a steam winch or
windlass or steering gear can be caused to work as a compound or as a high pressure
engine or can be stopped by simply moving one handle or lever that controls a double
I

page_text: cock or a slide valve. The double cock comprises two chambers each containing a
three-way plug, these two plugs being connected by any suitable means such as hy
toothed sectors in such a manner that the two are operated simultaneously by one
handle.
For distinction I will call one plug the inlet plug and the other the exhaust plug.
A steam inlet is provided to the chamber of the inlet plug, which chamber is also
connected by means of pipes to the high pressure and low pressure cylinders
respectively. The chamber containing the exhaust plug is connected with the
exhaust pipe of the high pressure cylinder and with a branch pipe leading to the
exhaust of the low pressure cylinder.
The third way from the chamber containing this plug is connected with the before
mentioned steam inlet pipe passing from the inlet plug to the low pressure cylinder.
Referring to the annexed illustrative drawings:
Fig. 1 is a central vertical section through a pair of conical valves or cocks.
Fig. 2 is a plan shewing means for operating the plugs which however may be
modified.
Figs. 3, 4 and 4 are horizontal sections..
A is the inlet plug and A¹ is the exhaust plug they are arranged in chambers C C¹
respectively and are provided with stems or shanks B B. The two plugs are
connected by toothed sectors D D' so that both plugs are operated when the
controlling handle E is moved. F is the steam inlet Gand H the steam branches
to the high and low pressure cylinders respectively; is a branch from the high
pressure exhaust, and J a branch in communication with the atmosphere. K is a
passage from the interior of the chamber C¹ to the steam branch H. The plug A¹
has ports 1, 2, 3, and the plug A ports 4, 5 and 6.
In one position of the handle E the steam inlet. (as shewn in Fig. 3) is in
communication through the ports 4, 5 and branch G with the high pressure cylinder
and the exhaust therefrom communicates through the branch I and ports 2 and 1 of
the exhaust plug A and passage K with the steam pipe H leading to the low pressure
cylinder. In this position the engine works as a compound engine. Upon turning
the controlling handle through a quarter of a revolution the plugs will be brought
into the positions shewn in Fig. 4 and communication will be established between the
steam inlet branch F and both the high-pressure and low-pressure cylinders through
the branches G and El respectively the exhaust from the high pressure cylinder being
then opened through the branch I to the exhaust pipe or atmosphere. In this
position high pressure steam will be admitted to both cylinders respectively through
the ports 6 and 4.
By another turn of the handle E (say through an opposite quarter of a revolution)
the steam inlet will be closed and the engine consequently stopped (see Fig. 4").
When using a slide valve instead of the double cock it is arranged in a chamber
I will call the valve chest and is provided with a rod passing through a stuffing box.
The said rod is connected to a lever provided with a handle by means of which a
longitudinal movement can be imparted to the valve.
Fig. 5 is a vertical section through the valve chest valve and cover shewing the
valve in position for working the engine compound.
Fig. 6 is a sectional plan of the same, the valve being shewn in plan or top view
and the steam ports dotted where covered by the valve.
Fig 7 is a vertical section on the line X X Fig. 6.
Fig. 8 is a similar view to Fig. 5 shewing the valve in position for working both
cylinders high pressure.
Fig. 9 is a sectional plan of the same with the valve in plan or top view.
Fig. 10 is a section on the line Y Y, and Fig. 11 is a vertical section on the
line Z Z Fig. 9.
Figs. 12, 13 and 14 are similar views to Figs. 5, 6 and 7 respectively but shewing
the slide valve in a position for closing the steam admission ports.
The valve face in the valve chest is provided with four ports L M N O. Two of
these LM may be conveniently arranged on one side of the centre line of the valve

page_text: face as shewn, and serve as steam admission ports to the high pressure cylinder and
low pressure cylinder through the branch passages P and Q respectively. The other
two ports N and O are in such case situate on the other side of the centre line of the
valve face; one of these (0) leads to the exhaust of the high pressure cylinder by the
passage R while the other (N) is connected by a passage S to a branch pipe leading
to the exhaust passage of the low pressure cylinder. T is the valve and T¹ a valve
rod. In the valve there is a cavity U which, at times, establishes communication
from the exhaust of the high pressure cylinder through the port to the steam
admission port L of the low pressure cylinder, or to the exhaust port N connected to
the exhaust pipe of the low pressure cylinder. In the valve is also arranged a port V
through which steam can he at times admitted from the valve chest to the one or the
Steam is admitted to the
other of the steam admission ports L M in the valve face.
valve chest through a branch F in the ordinary way. When the valve is in the
position shewn in Figs. 5, 6 and 7 steam is admitted from the valve chest to the high
pressure cylinder through the port Vin the valve, port M in the valve face and
passage P, and the exhaust passage of the high pressure cylinder is in communication
by way of the passage R, port O and cavity in the valve with the passage Q leading
to the low pressure cylinder. In this position the engine works as a compound
engine. Upon moving the valve T from this position through a distance of about
half its total travel, i.e., to the position shewn in Figs. 12, 13 and 14, both steam
admission ports will be closed by the valve and the engine consequently stopped.
Upon completing the travel of the valve, so that it occupies the position shewn in
Figs. 8, 9, 10 and 11, it will uncover the steam port M to the high pressure cylinder
and the port V in the valve will coincide with the steam port L leading to the low
pressure cylinder. Communication will therefore at this time be established between
the valve chest and both the high-pressure and low pressure cylinders, the exhaust of
the high pressure cylinder being then opened to the exhaust pipe of the low pressure
cylinder through the passage R, port O, cavity U¹ port N and the passage S (Fig. 11).
In this position high pressure steam will be admitted to both cylinders.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I claim is :-
1. The use in connection with two cylinders of a steam worked winch, windlass .or
steering apparatus, of a pair of cocks connected applied and operating substantially as
described, the arrangement being such that, at will (a) high pressure steam can be
admitted to the one cylinder and allowed to expand thence into the other, thus
working on the compound principle, or (b) high pressure steam can be admitted to
both cylinders, or (c) steam can be cut off from both cylinders, as above set forth.
2. The use in connection with two cylinders of a steam worked winch, windlass or
steering apparatus, of a slide valve applied and operating substantially as described,
the arrangement being such that, at will (a) high pressure steam can be admitted to
the one cylinder and allowed to expand thence into the other, thus working on the
compound principle, or (b) high pressure steam can be admitted to both cylinders,
or (c) steam can be cut off from both cylinders, as above set forth.
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.