Year: 1886

page_text: I SAMUEL BUTLER of 127 Bute Road, Cardiff, in the County of Glamorgan,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention has reference to a new arrangement of oscillating cylinders in
connection with a rocking disc valve, the valves being worked by the oscillatory
motion of the cylinders. The spindle from the centre of the valve serves the
double purpose of rocking the valve and relieving the pressure on the face thereof.
The valve is enclosed in a box with the spindle protruding through the stuffing
box. The ports are arranged in the valve and its seat for pressure and exhaust so
as to be opened by the rocking motion as in a slide valve. This valve is specially
adapted for hydraulic motors and for motors of the following construction in
which the cylinders are double acting and the piston rods are connected direct to
the crank. The cylinders may be working side by side or opposite to each other
on separate cranks at right angles or the two cylinders may be arranged to work
on the same crank, in which case the cylinders themselves must be arranged at
right angles to each other. The rocking disc valve is contained in a valve chest
cast with the cylinder and having its position on the side of the cylinder and as
close as possible to the trunnions. The water enters the valve chest through one
trunnion and is exhausted through the other. There is a short lever on the spindle
of the valve to which one end of the link is attached, having its other end secured
to a fixed point on the frame of the motor for holding it whilst the rocking motion
of the cylinder imparts the required rocking motion to the valve.
I apply this class of motor to any purpose where rotary motion is required to be
given to a shaft for working capstans and other machinery.
HUGHES & SON,
Agents for the Petitioner,

page_text: I, SAMUEL BUTLER, of 127 Bute Road, Cardiff, in the County of Glamorgan,
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 has reference to a new arrangement of oscillating cylinders in
connection with a rocking disc valve, the valves being worked by the oscillatory
motion of the cylinders.
I make the cylinders double acting and connect the piston rod direct with the
crank. The cylinders may be working side by side or opposite to each other on
separate cranks at right angles or the two cylinders may be arranged to work on
the same crank in which case the cylinders themselves must be arranged at right
angles to each other. The rocking disc valve is contained in a valve chest cast
with the cylinder and having its position on the side of the cylinder and as close
as possible to the trunnions. The water enters the valve chest through one
trunnion and is exhausted through the other. There is a short lever on the
spindle of the valve to which one end of a link is attached having its other end
secured to a fixed point on the frame of the motor for holding it whilst the rocking
motion of the cylinder imparts the required rocking motion to the valve.
I apply this class of motor to any purpose where rotary motion is required to be
given to a shaft for working capstans and other machinery.
And in order that my invention may be more fully understood I herein give
reference to the accompanying sheets of Drawings of the valve useful for either
steam air or water the object being to reduce the pressure on the valve face which
is a matter of the utmost importance; especially with hydraulic power. I balance
my valve as much as required by the spindle which rocks it.
The valve is made in the form of a disc with the spindle from its centre.
Figure 1 sheet 1 shews section of the valve and valve box as fitted to an oscillating
cylinder. Figure 2 is section of the valve and valve box through the oscillating
cylinder and its trunnions. Figure 3 shews the ports in the valve seat. Figure 4
is the face of the valve.
To explain the action of the valve I shew it applied to a water motor and it
may be best understood from Figure 2. The water enters the valve box through
the trunnion A and acts on the back of the valve at B keeping it tight on its seat
and were it not for the spindle C the surface on which the water acts would bo
much greater. The friction therefore of the valve on its face may be reduced to
any extent by increasing the diameter of the spindle C. The exhaust water passes
out through the trunnion D. The end of the spindle has a crank fitted on it with
a crank pin E which is jointed to a fixed point on the frame work of the motor by
a link so that the oscillation of the cylinder gives the required rocking motion to
the valve so admitting pressure through the ports F and G Figure 3 alternately
and also opening the ports F and G to the exhaust ports H I alternately. The
ports F and G lead to opposite ends of the cylinder.

page_text: I arrange these oscillating cylinders as represented in Figures 8 and 9 either side
by side or opposite each other, working on separate cranks or they may be made to
work on one crank as represented on sheet 2. This latter mode of working is
especially applicable for the working of capstans, the crank shaft being placed
vertically and having the capstan keyed on the upper end as shewn at A. The
lower end of the crank shaft is secured in the foot step B. The engine bed is made
in the form of an iron box as shewn in Figure 2 and the whole is set in the ground
so that the top plate C shall form the foot plate on which the man stands to
work it. The motor is started and stopped by the tap D actuated by pressure
from the driver's foot against the pressure of the weight E.
The motors constructed as represented in Figures 8 and 9 sheet 1 may also be
used for working capstans either by arranging them with their shafts in a vertical
position or by connecting their shafts to the capstan in any position by gearing.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:-
First. The use of a rocking disc valve by which the spindle serves the purpose
of relieving the pressure on the valve seat as herein described.
Second. The arrangement of two oscillating cylinders working in connection
with my disc valve as herein described.