Stopping Steam or other Engines or Machinery.
Year: 1886

page_text: Date of Application, 17th Sept., 1886.
Complete Left, 17th June, 1887.
Complete Accepted, 19th Aug., 1887.
or Stopping Steam or other Engines or Machinery.
I, JAMES GEORGE GALLEY, of Forest Gate, in the County of Essex, Engineer, do
hereby declare the nature of this invention, to be as follows:-
:-
My invention relates to machinery or apparatus used for starting, stopping, and
reversing, marine or other steam Engines, or other Engines or machines, in
which it is required that the heavy reversing or other mechanism should be easily
and readily moved as and when desired and without liability to concussion.
My invention is applicable more especially to that kind of such machinery or
apparatus, in which the starting, stopping, reversing, or other gear or mechanism
is actuated by the pressure of steam upon a piston in a cylinder, the movement
of such piston being controlled and regulated by means of a slide valve moved
by a handle operated by the person in charge of the apparatus. It has for its
object improvements by which the movement of the piston in the cylinder is
automatically stopped as it approaches either end of its stroke without the attention
of the person using it being necessary, and the piston can be fixed in any part of
its stroke so as to retain the reversing mechanism in a corresponding part of its
stroke as long as may be desired.
I take a cylinder of suitable dimensions, having a piston of the usual kind working
in it, the rod of which is connected to a bell crank or other lever by which the
starting, stopping, and reversing apparatus of steam or other Engines or machinery
is actuated in the usual way.
The cylinder is provided with a slide or other valve of any of the ordinary well
known kinds by moving which in either direction the piston can be made to travel in
a corresponding direction or can be stopped when desired. The valve spindle passes
out through a stuffing box and is connected with one end of a lever turning upon a
centre carried by the cylinder or other suitable support, the other end of the lever
being also jointed to a spindle which passes through a stuffing box in the cylinder
cover and protrudes into the cylinder, so that it is struck by the piston as the latter
reaches the end of its stroke.

page_text: The valve spindle is also continued and carried through the opposite end of the
valve chest in a similar way, and is also connected to a lever of the same kind, to
which is jointed a spindle passing through a stuffing box in the cover or base at the
opposite end of the cylinder. One or other of the levers is also provided with an arm
upon which a moveable handle or lever can be fitted, by working which the person in
charge of the apparatus can admit steam to either end of the cylinder as may
be desired.
A certain amount of play is left between the valve and the spindle which drives it,
so that the latter moves a short distance before it commences to move the valve, and
the length of the spindles protruding into the cylinder is so adjusted that when the
piston strikes either of them as described, the valve spindle is moved far enough to
close the valve and to just commence opening it in the opposite direction as the
piston reaches the end of its stroke.
As therefore the piston approaches either end of its stroke it comes in contact with
and drives forward the corresponding spindle protruding into the end of the cylinder,
which by means of the lever to which it is jointed closes the slide valve, and by then
opening it sufficiently in the opposite direction admits steam enough to form a cushion
in front of the piston and prevent all concussion.
I provide a strong rod or other guide by which a crosshead upon the piston rod is
guided, and upon or connected with the crosshead I make an adjustable clip by which
the crosshead can be instantly fixed firmly upon the guide by means of a lever within
reach of the person in charge, so that the piston (and with it the reversing or other
mechanism) can be retained firmly in any desired position, whilst by loosening the
clip and moving the valve lever up or down, the piston can be driven in either
direction as required.
I prefer that the valve should be supported at the back so that it is held up against
the valve face of the cylinder.
In order that, if required, the reversing or other machinery should be moved when
steam is not available for the purpose of driving the piston as described, I provide a
force pump, actuated by hand or other power, by which water can be forced into the
valve chest and thence, by moving the valve, into either end of the cylinder as
desired, so as to force the piston in the required direction. As the latter approaches
the end of its stroke the valve is automatically closed in the way already described.
The improved apparatus may be modified more or less according to the circum-
stances under which it to be used, and it may be arranged vertically or in any
other convenient position.
1
171 1
го
2000

page_text: or Stopping Steam or other Engines or Machinery.
I, JAMES GEORGE GALLEY, of Forest Gate, in the County of Essex, 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 and accompanying drawing, that is to say :-
My invention relates to machinery or apparatus used for starting, stopping, and
reversing, marine or other steam Engines, or other Engines or machines, in which it
is required that the heavy reversing or other mechanism should be easily and readily
moved as and when desired and without liability to concussion.
My invention is applicable more especially to that kind of such machinery or
apparatus, in which the starting, stopping, reversing, or other gear or mechanism is
actuated by the pressure of steam upon a piston in a cylinder, the movement of such
piston being controlled and regulated by means of slide valve moved by a handle
operated by the person in charge of the apparatus. It has for its object improvements
by which the movement of the piston in the cylinder is automatically stopped as it
approaches either end of its stroke, without the attention of the person using it being
necessary, and the piston can be fixed in any part of its stroke so as to retain the
reversing mechanism in a corresponding part of its stroke as long as may be desired.
In the accompanying drawing, which is in illustration of my invention, figure 1 is
a vertical section through the apparatus, and figure 2 an end view.
I take a cylinder a of suitable dimensions, having a piston of the usual kind
working in it, the rod c of which is connected to a bellcrank or other lever d by
which the starting, stopping, and reversing apparatus of steam or other Engines or
machinery is actuated in the usual way.
The cylinder a is provided with a slide or other valve e of any of the ordinary well
known kinds by moving which in either direction the piston b can be made to travel
in a corresponding direction or can be stopped when desired.
The valve spindle passes out through a stuffing box and is connected with one end
of a lever g turning upon a centre h carried by the cylinder or other suitable support,
the other end of the lever being also jointed to a spindle i which passes through a
stuffing box in the cylinder cover and protrudes into the cylinder, so that it is struck
by the piston as the latter reaches the end of its stroke. The valve spindle is also
continued and carried through the opposite end of the valve chest, in a similar way,
and is also connected to a lever gl of the same kind, to which is jointed a spindle 2¹
passing through a stuffing box in the cover or base at the opposite end of the cylinder.
One or other of the levers is also provided with an arm upon which a moveable
handle or lever k can be fitted, by working which the person in charge of the apparatus
can admit steam to either end of the cylinder as may be desired.

page_text: A certain amount of play is left between the valve e and the spindle which drives it,
so that the latter moves a short distance before it commences to move the valve, and
the length of the spindles protruding into the cylinder is so adjusted that when the
piston strikes either of them as described, the valve spindle is moved far enough to
close the valve and to just commence opening it in the opposite direction as the piston
reaches the end of its stroke.
?
As therefore the piston approaches either end of its stroke it comes in contact
with and drives forward the corresponding spindle i or protruding into the end of
the cylinder, which by means of the lever to which it is jointed closes the slide valve e,
and by then opening it sufficiently in the opposite direction admits steam enough to
form a cushion in front of the piston and prevent all concussion.
I provide a strong rod or other guide by which a crosshead upon the piston rod is
guided, and upon or connected with the crosshead I prefer to make an adjustable clip
by which the crosshead can be instantly fixed firmly upon the guide by means of a
lever within reach of the person in charge, so that the piston b (and with it the
reversing or other mechanism) can be retained firmly in any desired position, whilst
by loosening the clip and moving the valve lever up or down, the piston can be driven
in either direction as required. In figure 1, the clip is shewn at n, upon the cross
and
tree m, and is tightened upon the guide when required, by the bolt and nut
handle p.
I prefer that the valve e should be supported at the back so that it is held up
against the valve face of the cylinder.
In order that, if required, the reversing or other machinery should be moved when
steam is not available for the purpose of driving the piston as described, I provide a
force pump, actuated by hand or other power, by which water can be forced into the
valve chest and thence by moving the valve e, into either end of the cylinder as
desired, so as to force the piston b in the required direction. As the latter approaches
the end of its stroke the valve e is automatically closed in the way already described.
I prefer to make the ends of the valve e inclined, as shewn in dotted lines in
figure 2, so that steam is very gradually admitted to the cylinder a when the
lever k is moved.
The improved apparatus may be modified more or less according to the circum-
stances under which it is to be used, and it may be arranged vertically or in any
other convenient position.
Having now particularly described and ascertained the nature of my said invention
and in what manner the saine is to be performed, I declare that what I claim is :-
1. The combination of the cylinder a, piston 6 operating the lever d, valve
b
spindles, levers g, gl, and spindles i, i, arranged and operating substantially as
and for the purpose described and shewn.
valve
2. In combination with the piston band piston rod c, the adjustable clip by which
the piston can be held in any desired position, substantially as described and shewn.
Dated this 17th day of June 1887.
EDWARDS & Co.,
35, Southampton Buildings, London,
Agents for the Patentee.