Year: 1886

page_text: Date of Application, 3rd Sept., 1886.
Complete Left, 8th June, 1887.
Complete Accepted, 15th July, 1887.
We, ABRAHAM NORMAN of Stroud Green, Gentleman, and GEORGE LUSH PEARSON
of Holloway Mechanical Engineer, both in the County of Middlesex, do hereby
declare the nature of this invention to be as follows:-
This invention relates to improvements in that class of water motors in which the
pressure of the water actuates a piston or plunger working in a cylinder thereby
imparting movement to a crank.
In water motors of this class as heretofore constructed, a valve has generally been
used to govern the admission of the water to the cylinder.
In carrying out our invention in a motor in which the pressure of water acts on
one side of the piston only, we entirely dispense with the aforesaid valve, and arrange
the inlet pipe or port at one end of the cylinder, so that it is always open to the said
cylinder when the said motor is working.
For the purpose of exhausting the water from the cylinder after it has acted on the
piston or plunger, we arrange a separate pipe or port at the same end of the cylinder
as the inlet port. This port is preferably larger than the inlet port and governed by
a slide valve of suitable construction but preferably a piston or plunger valve.
This slide valve we can work in any suitable manner, but preferably by an excentric
on the crank shaft of the motor. A suitable flywheel is used to return the piston or
plunger after having been acted on by the pressure of the inlet water.
The operation of our improved motor is as follows:-The plunger or piston being
at the end of the cylinder at which the inlet and exhaust ports are situated, and the
slide valve closed, if the water under pressure be admitted to the cylinder through the
inlet pipe or port by means of a suitable tap or cock, it will act on the piston or
plunger so as to drive it to the other end of the cylinder thereby turning the crank by

page_text: means of the usual connecting rod. The slide valve will now have opened the exhaust
port thereby relieving the pressure of water from behind the piston by reason of the
said outlet water rushing through the cylinder and out of the exhaust port. The
piston will now be returned by the momentum of the flywheel to the end of the
cylinder, when the slide valve will close the exhaust port, thus completing the cycle of
operations and so on.
When making use of a double acting cylinder instead of the single acting cylinder
hereinbefore described we find it necessary to use a slide valve to govern the admission
of the inlet water, the said valve being similarly constructed and worked as the exhaust
valve. Both the inlet and exhaust valves are arranged to admit and exhaust the water
respectively at each end of the cylinder as will be well understood.
1
1000

page_text: Improvements in R
We ABRAHAM NORMAN of 29 Stapleton Hall Road Stroud Green Gentleman, and
GEORGE LUSH PEARSON of 73 Devonshire Road Holloway, Mechanical Engineer,
both in the County of Middlesex, 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 improvements in that class of water motors in which the
pressure of the water actuates a piston or plunger working in a cylinder, thereby
imparting movement to ว crank.
In water motors of this class as heretofore constructed, a valve has generally been
used to govern the admission of the water to the cylinder.
In carrying out our invention in a motor in which the pressure of water acts on one
side of the piston only, we entirely dispense with the aforesaid valve, and arrange the
inlet pipe or port at one end of the cylinder, so that it is always open to the said
cylinder when the said motor is working.
For the purpose of exhausting the water from the cylinder after it has acted on the
piston or plunger, we arrange a separate pipe or port at the same end of the cylinder
as the inlet port. This port is preferably larger than the inlet port and is governed
by a slide valve of suitable construction, but preferably a piston or plunger valve.
This slide valve we can work in any suitable manner but preferably by an excentric
on the crank shaft of the motor. A suitable fly-wheel is used to return the piston or
plunger after having been acted upon by the pressure of the inlet water.
When making use of a double acting cylinder instead of the single acting
cylinder hereinbefore described, we find it necessary to use a slide valve to govern
the admission of the inlet water, the said valve being similarly constructed and worked
as the exhaust valve. Both the inlet and exhaust valves are arranged to admit and
exhaust the water respectively at each end of the cylinder as will be well understood.
To enable our invention to be carried into practice, we will describe it by reference
to the annexed drawings in which Figure 1 represents a sectional elevation of a single-
acting vertical water-motor constructed according to our invention, and Figure 2
represents a similar view of a double acting water motor. Similar reference letters
indicate similar or corresponding parts throughout the drawings.
Referring to figure 1, a is the cylinder in which works the piston b. c, d, e and f
are the usual connecting rod, crank, shaft and flywheel respectively. g is the inlet
pipe or port and h is the tap or cock for regulating the admission of water to the
cylinder a. i is the slide valve for exhausting the water from the cylinder through a
pipe j, and k is the excentric which is fixed to the shaft e for driving the said valve i.
The operation of our improved motor is as follows:-The piston 6 being at the
lower end of the cylinder a and the slide valve closed as shewn, if the water under
pressure be admitted through the inlet pipe or port g by means of the tap or cock hit
b

page_text: will act on the piston 6 so as to drive it to the other end of the cylinder, thereby
turning the crank d by means of the connecting rod c.
The slide valve i will now
have opened the exhaust pipe or port j thereby relieving the pressure of water from
behind the piston by reason of the said water rushing through the cylinder a and out
of the exhaust port or pipe j. The piston b will now be returned by the momentum
of the fly-wheelf to the lower end of the cylinder a, when the slide valve i will close
the exhaust port or pipe j thus completing the cycle of operation and so on.
Referring to figure 2, 7 is the valve which we find necessary to use in this arrange-
ment for governing the admission of water to the top and bottom of the cylinder
and which is driven by an excentric m in a similar manner to the exhaust valve i the
said exhaust valve being constructed and operated so as to exhaust the water from the
top and bottom of the cylinder a.
Although we have shewn vertical forms of our improved water motor, it will be
obvious that the same can be constructed in a horizontal or other form.
Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed we declare that what we claim is :-
1. A water motor which while working, has its cylinder continually open to the
water pressure, a valve being used to relieve the said pressure so as to obtain a
reciprocating action of the piston substantially as hereinbefore described and
represented at figure 1 of the accompanying drawings.
2. The improved water motor substantially as hereinbefore described and represented
at figure 1 of the accompanying drawings.
3. The improved water motor substantially as hereinbefore described and represented
at figure 2 of the accompanying drawings.
Dated this 4th day of June 1887.
GEORGE LUSH PEARSON.