Automatic Arrangement for Turning Live Steam into the Receivers of Cylinders successive to the High Pressure Cylinder in Compound, Triple, and other Multi-cylinder Expansion Engines.
Year: 1895

page_text: Date of Application, 10th June, 1895
Complete Specification Left, 6th Mar.. 1896 -Accepted, 9th May, 1896
PROVISIONAL SPECIFICATION.
Automatic Arrangement for Turning Live Steam into the Receivers
of Cylinders successive to the High Pressure Cylinder in
Compound, Triple, and other Multi-cylinder Expansion Engines.
1 LEWIS RICHARDS of 12 Park Villas Llanishen in the County of Glamorgan
Engineer and Works Manager, do hereby declare the nature of this invention to
be as follows:-
I employ two cylinders of unequal diameters fitted with pistons, which are
connected together by a rod or rods passing through stuffing boxes in the covers of
the respective cylinders. The smaller cylinder is to be supplied with steam direct
from the boilers, and steam to the larger cylinder is to be taken from the induction
pipe of the high pressure cylinder at any point between the throttle or regulating
The
valve of the engine and the valve chest or from the valve chest itself.
steam on the piston in the one cylinder is to be opposed to the steam on the
piston in the other cylinder, and the difference in the pressure of the steam on
the respective pistons combined with the difference in the diameters of the cylinders
is intended to cause the pistons to move in one or the other direction and their
motion to actuate a valve which is to open or close the communication between
the live steam and the receivers of the cylinders which may be employed in
succession to the bigh pressure cylinders in engines of the description herein.
referred to.
Relief valves are to be provided to regulate the pressure in the receivers.
L. 1905
LEWIS RICHARDS.
Automatic Arrangement for Turning. Live Steam into the Receivers
of Cylinders successive to the High Pressure Cylinder in
Compound, Triple, and other Multi-cylinder Expansion Engines.
I LEWIS RICHARDS of 12 Park Villas Llanishen in the County of Glamorgan
Engineer and Works Manager 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 :-
I employ two cylinders of unequal diameters fitted with pistons which are
connected together by a rod or rods passing through stuffing boxes in the
covers of the respective cylinders. The smaller cylinder is to be supplied with
steam direct from the boilers and steam to the larger cylinder is to be taken
from the induction pipe of the high pressure cylinder at any point between the
throttle or regulating valve of the engine and the valve chest of the high pressure.
cylinder or from the valve chest itself. The steam on the piston in the one
cylinder is to be opposed to the steam on the piston in the other cylinder, and the
difference in the pressures of the steam on the respective pistons combined with
the difference in the diameters of the cylinders is intended to cause the pistons

page_text: to move in one or the other direction and their motion to actuate a valve which is
to open and close the communication between the live steam and the receivers of
the cylinders which may be employed in succession to the high pressure cylinders
in engines of the description herein referred to.
Relief valves are to be provided to regulate the pressure in the receivers.
The piston in the larger or smaller cylinder may be made to constitute the valve
for opening and closing the communication between the live steam and the
receivers by means of an additional port in the cylinder through which the live
steam would pass on to the receivers, and which would be opened and closed by
the piston.
In the case of starting engines of the class herein referred to, should the crank
of the high pressure cylinder happen to be at or near the dead centre or should
the valve of the high pressure cylinder be in a position so as not to admit steam
into the high pressure cylinder and the pressure in the receiver or receivers of the
cylinder or cylinders successive to the high pressure cylinder having fallen below
that necessary for starting the engine, the pressure in the larger cylinder
will rise and move the pistons against the pressure in the smaller cylinder and
open the valve for admitting live steam into the receiver or receivers, the
pressure of the steam on the piston of the smaller cylinder again closing the saine
valve when the pressure in the larger cylinder has fallen after the engine has
started.
In order that my invention may be fully understood I will proceed to describe it
more particularly by the aid of the accompanying drawing.
DESCRIPTION OF THE DRAWING.
Fig. 1. A is a valve box with the branches B and C for conveying the live
steam to and from the valve D which is to open and close the communication
between the live steam and the receiver or receivers of the cylinder or cylinders
successive to the high pressure cylinder in engines of the class herein referred to.
E is the larger cylinder with the piston F and the steam port C for conveying
steam taken from the induction pipe between the throttle or regulating valve of
the engine and the valve chest of the high pressure cylinder or from the valve
chest itself into it. H is the smaller cylinder with the piston I and the steam
port J for conveying steam taken from the induction pipe between the throttle
or regulating valve of the engine and the boilers or otherwise from the boilers
into it.
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 :-
--
1. The use of two cylinders of unequal diameters having pistons connected
together and also connected to a valve for opening and closing the communication
between the live steam and the receiver or receivers of the cylinder or cylinders
successive to the high pressure cylinder in compound triple or other multicylinder
expansion engines, the smaller cylinder having steam direct from the boilers and
the larger cylinder having steam taken from the induction pipe of the high pressure
cylinder at any point between the throttle or regulating valve of the engine and
the valve chest of the high pressure cylinder or from the valve chest itself, the
steam on the piston of the oue cylinder being opposed to the steam on the piston
of the other cylinder and the difference in the pressures of the steam on the
respective pistons combined with the difference in the diameters of the cylinders
causing the pistons to move in one or the other direction and their motion actuating
a valve for opening and closing the communication between the live steam and the
receiver or receivers of the cylinder or cylinders successive to the high pressure
cylinder in compound, triple or other multicylinder expansion engines as and for
the purpose substantially as described.

page_text: 2. The use of two cylinders of unequal diameters with pistons connected together
and supplied with steam as herein already described, the larger cylinder having
an additional outlet port forming with the port conveying steam into the said
cylinder a communication between the live steam and the receiver or receivers of
the cylinder or cylinders successive to the high pressure cylinder in compound triple
or other multicylinder expansion engines, and the piston in the said cylinder acting
as the valve for opening and closing the communication between the live steam and
the receiver or receivers of the cylinder or cylinders successive to the high pressure
cylinder in compound triple or other multicylinder expansion engines as and for the
purpose substantially as described.
3. The use of two cylinders of unequal diameters with pistons connected together
and supplied with steam as herein already described, the smaller cylinder having an
additional outlet port forming with the port conveying steam into the said cylinder
a communication between the live steam and the receiver or receivers of the
cylinder or cylinders successive to the high pressure cylinder in compound triple
or other multicylinder expansion engines, and the piston in the said cylinder acting
as the valve for opening and closing the communication between the live steam and
the receiver or receivers of the cylinder or cylinders successive to the high pressure
cylinder in compound triple or other multicylinder expansion engines as and for
the purpose substantially as described.
Dated this 5th day of March 1806
LEWIS RICHARDS.