Year: 1888

page_text: Date of Application, 18th June, 1888
Complete Specification Left, 18th Mar., 1889
Complete Specification Accepted 20th Apr., 1889
RESERVE C
GEORGE ANNESLEY GRINDLE of 19 Great Winchester Street, London, E.C.,
Electrical Engineer, and MOZART VINNING, of 33 Alexandra Road, Hornsey, in the
County of Middlesex, Retired Assistant Paymaster, Royal Navy, do hereby declare
the nature of this invention to be as follows:-
Our invention is designed to provide fixed or stationary apparatus whereby the water
or other liquid stored in or near a building or buildings or district or supplied to such
building or buildings or district by means of pipes or mains may be discharged from
the mains or fire-cocks or hose under great pressure when required for extinguishing
fire or other purposes; and to provide means whereby such pressure may be
immediately caused to act upon the water so that it may be used at any point,
and whereby this result can be obtained with great celerity and by the least possible
number of operators.
Our invention is based upon the utilization of electricity, either obtained from
storage batteries or produced by any of the ordinary means of generating electricity,
to actuate an electric motor of suitable design for the purpose of operating a pump,
centrifugal pump or other similar apparatus for forcing water into the said mains
under pressure either automatically on the falling of the pressure in the inains to any
desired point or to be operated by hand at will by suitable arrangement of switches.
In carrying the said invention into practice we provide-unless the building or
district is already provided therewith-a dynamo and the necessary power for driving
These would be in
the same or storage batteries charged with the necessary current.
most cases primarily used for lighting purposes, and our invention is indeed chiefly
applicable to such buildings or districts as are already furnished with a sufficient
source of electric power.
In connection with the fire-main or with a supply of water stored in tanks or
cisterns or even in wells, and in a position least exposed to the influence of any
possible outbreak of fire, we place a pump, centrifugal pump or other similar appliance
which shall receive its supply of water from the mains or tanks by gravitation, or by
suction if the water storage is at a lower level. Geared to this pump for the purpose
of driving the same we place an electric motor of suitable construction and power,
which we connect by the necessary wire to the negative pole of the source of supply
of electric energy, which may be a dynamo or storage battery.
The discharge from the pump
then connected with the mains in which it is
intended to produce or to maintain the desired pressure. In some part of this main

page_text: or in a pipe connected therewith and preferably close to the discharge from the pump,
we place an electric regulator for inaintaining the pressure in the mains at the desired
point. This regulator consists of a diaphragm of metal or other suitable substance,
or of an extensible cylinder, or of a piston or other similar contrivance, or of a coiled
tube similar to that used in the Bourdon pressure gauge, so attached to the main that
any increase of water pressure deflects or extends the diaphragm or extensible cylinder
or piston or coiled tube. Beneath this we sometimes place an enlargement of the
main or an addition thereto to serve as an air-vessel so that the air therein may be
compressed by the water pressure and so communicate the pressure to the diaphragm,
extensible cylinder piston or coiled tube. We sometimes place at the base of this air
vessel a second diaphragm, or piston or extensible partition to keep the air in the air
vessel from mingling with and being carried away by the water; and attached to
the air vessel we may place a small force pump for charging it with compressed
air as may be necessary.
The upper side of this diaphragm, extensible cylinder, or piston, on the end of
the coiled tube is connected with a needle or pointer the center or pivot of which
is connected by wire to one pole of one or more cells of the storage battery, or to
a separate small cell or battery specially provided or to any other source of supply
of electric energy. This pointer moves on the face of a dial graded to show the
pressure in pounds on the square inch; and at the desired working point of pressure
on the dial is inserted an insulated metallic stop, which can be moved at will to vary
the working pressure. This insulated stop is connected to one end of the coil of an
electro magnet, the other end of this coil being connected to the other pole of the
before mentioned cell or cells of the storage battery or of the independent cell or
battery.
Suspended on a pivot, with one end almost in contact with the aforesaid electro
magnet, is an iron armature retained in position by a spring and having its other end
almost in contact with a wire which leads to the positive pole of the source of supply
of electric energy. From the electric motor a wire is connected to the armature, or
we may in some cases place two cups of mercury directly under two projections from
the under side of the armature, one cup being connected by wire with the positive
pole of the source of supply of electric energy and the other being connected to the
motor.
The action of the system is as follows:-On the falling of the pressure in the main
to the desired working point, say 100 lbs., the pointer of the regulator touches the
metallic stop, contact is thus made, and the electro-magnet attracts one end of the
armature, the other end being thereby deflected and so completing the circuit, which
operates the motor and pump. On the pressure in the main rising above one hundred
pounds the pointer recedes from the metallic stop, contact ceases and motor and pump
are brought to rest.
In this case the action of the system is automatic, and high pressure is maintained
always on the mains; but where this is not desired a switch, to be worked by hand,
is placed at any convenient point of the main leads that connect the source of supply
of electric energy and the motor; and in this latter case the pointer of the regulator
will usually remain in contact with the metallic stop. On contact being made by means
of the switch, the motor and pump will be brought into operation until 100 lbs.
pressure is produced, when the regulating action of the "Regulator
play.
وو
comes into
It is obvious that the regulating device may in some cases be entirely dispensed
with, and the pump started and stopped as desired by merely switching on the current
to the motor.
Dated this nightmouth d
T
1000

page_text: We GEORGE ANNESLEY GRINDLE of 19 Great Winchester Street London E.C.
Electrical Engineer and MOZART VINNING of 33 Alexandra Road Hornsey in the
County of Middlesex Retired Assistant Paymaster, Royal Navy 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 :-
Our invention is designed to provide fixed or stationary apparatus whereby the
water or other liquid stored in or near a building or buildings or district; or supplied
thereto by means of pipes or mains; may be discharged from subsidiary mains
through fire cocks or hose under great pressure when required for extinguishing fire
or for other purposes, and to provide means whereby such pressure may be immediately
caused to act upon the water so that it may be used at any point, and whereby this
result can be obtained with great celerity and by the least possible number of
operators.
Our invention is based upon the utilization of electricity, either obtained from
storage batteries or produced by any of the ordinary means of generating electricity,
to actuate an electric motor of suitable design for the purpose of operating a pump
for forcing water into the said subsidiary mains under pressure, the electric motor
being brought into operation either automatically whenever the pressure in the sub-
sidiary mains falls to a predetermined point or periodically at will by the operation by
hand of a suitable arrangement of switches.
In carrying the said invention into practice we provide a dynamo and the necessary
power for driving the same or storage batteries charged with the necessary current.
In connection with the water or other liquid stored or supplied by mains as herein
before referred to, and in a position least exposed to the influence of any possible
outbreak of fire we place the forcing-pump to draw its supply from the store or mains
as the case may be. Geared to this pump for the purpose of driving the same we
place an electric motor of suitable construction and power connected by the necessary
wire with the negative pole of the source of supply of electric energy which may be
a dynamo or a storage battery..
The discharge from the pump is connected with the subsidiary mains in which it is
intended to produce or to maintain the desired pressure.
In some part of the subsidiary main or in a pipe connected therewith and preferably
close to the discharge from the pump we place an electric regulator for maintaining
the pressure in the subsidiary mains at the desired point. This regulator consists of a
dial pressure indicator preferably of the type commonly known as the Bourdon
pressure gauge so attached to the main that any increase of water pressure will be
recorded by the needle or pointer traversing the face of the dial graded to show the
pressure in pounds on the square inch.

page_text: Beneath the dial pressure indicator we sometimes place an enlargement of the main
or an addition thereto to serve as an air vessel so that the air therein may be com-
pressed by the water pressure and so communicate the pressure with the mechanism
of the dial pressure indicator. We may also place near the base of this air vessel a
diaphragm or piston or extensible partition to keep the air in the air-vessel from
mingling with and being carried away by the water as described in the specification
of Letters Patent No. 15479 of the year 1886 granted to Mozart Vinning. In this
case we may place a small force pump in connection with the said air vessel for
charging it with compressed air as may be necessary.
The central pivot of the dial pressure indicator upon which the needle or pointer
oscillates we connect by wire to one pole of one or more cells of the storage battery or
to one pole of a separate small cell or battery specially provided or to any other source
of supply of electric energy. Upon the dial of the pressure indicator we secure in a
manner to allow of regulation of position according to the desired working pressure
an insulated metallic stop with which the needle or pointer arriving at that position
will make contact. This insulated stop is connected to one end of the coil of an electro
magnet, the other end of this coil being connected to the other pole of one or more
cells of the storage battery or to the other pole of the separate small cell or battery
before referred to.
Suspended on a pivot with one end almost in contact with the aforesaid electro
magnet is an iron armature retained in position by a spring and having its other end
fitted with two projections to dip into or retire from two cups of mercury according as
the armature is attracted to or released from the electro magnet referred to.
The
said two mercury cups are connected by wires one with the positive pole of the source
of supply of electric energy and the other with the electric motor which actuates the
pump.
In the accompanying drawing or diagram the source of supply of electric energy
which may be storage batteries or a dynamo is represented at A.
B is the wire
connecting the negative pole of the source of supply of electric energy A with an
electric motor C geared to the pump D which draws its supply from the tank (not
shown) or from a main E conveying water from any source of supply, and which
discharges into subsidiary mains K provided usually with the air-vessel R and in
which a certain hydraulic pressure is to be maintained.
F is the return wire from the electric motor to the positive pole of the source of
supply of electric energy A, intercepted by the two cups of mercury G. H., which
with the armature J form a double "cut-out" under the control of an automatic relay
circuit consisting of a small cell or battery S with wires T and U connected respectively
with the central pivot W upon which the needle or pointer L oscillates, and with the
adjustable metallic stop N passing through the coil of the electro magnet P. This
relay circuit may as herein before stated derive the necessary electric current from any
other source of supply of electric energy as for example from the source of supply of
electric energy A as indicated by the dotted lines representing the wires in that case
employed, dispensing with the separate battery S.
On the falling of the pressure in the subsidiary main K to the desired working point
(say 100 lbs.) the needle or pointer L of the regulator M touches the metallic stop N,
contact is thus made and the electro magnet P attracts one end of the armature J
overcoming the spring Q, the other end being thereby deflected and so completing a
circuit by dipping the projections on the armature J into the mercury cups G. H.
By this means the electric motor C and the pump D are set in operation until the
pressure in the subsidiary main K rises above 100 lbs. when the needle or pointer L
recedes from the adjustable metallic stop N, contact ceases and the motor and pump
are brought to rest.
In this case the action of the system is automatic and high pressure is maintained
always in the subsidiary main K; but where this is not desired, a switch X, to be
worked by hand is placed at any convenient point of the main leads that connect the
source of supply of electric energy and the motor.

page_text: As in this latter case the needle or pointer L of the "regulator'
"M will normally
remain in contact with the adjustable metallic stop N it will be necessary to provide
also a switch to control the relay circuit and this switch may be operated simultaneously
with the switch X by means of which, contact being made, the motor and pump will
be brought into operation until the desired hydraulic pressure is produced when the
regulating action of the "regulator" M comes into play.
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. The combination of storage batteries or other source of supply of electric energy
with an electric motor and a pump for forcing water under pressure into mains con-
stituting an installation to be employed when required for fire extinction or other
purposes where it is desired to discharge water or other liquids under pressure.
2. The combination of storage batteries or other source of supply of electric energy
with an electric motor and a pump the operation of which is controlled by a regulated
relay circuit substantially as and for the purpose set forth.
3. The automatic regulator consisting of a dial pressure gauge or pressure indicator
having a fixed or adjustable metallic stop, with a relay circuit arranged to break and
make contact by the movement of the needle or pointer of the pressure indicator
substantially as and for the purposes set forth.
Dated this 18th day of March 1889