Year: 1886

page_text: Date of Application, 11th Feb., 1886.
Complete Left, 11th Nov., 1886.
Complete Accepted, 21st Jan., 1887,
I JOHN GAMGEE, of 14 Whitehead's Grove, Chelsea, in the County of Middlesex,
Gentleman do hereby declare the nature of this invention to be as follows:-
This invention relates to an improvement in the method of operating turbines, and
other water wheels, whereby all the advantages derived from the air vessel of an
ordinary water pump are directly obtained, and efficient water motors made available
for indoor erection and use as well as for general purposes.
To effect this the motor is placed and operated in an air and water tight tank of
adequate dimensions to permit the free action of the motor in compressed air.
The said tank is provided with a vertical pipe, adapted internally or externally and
provided with a foot valve, in such a way that water occupying the lower part of the
tank may have a channel of ascent and return into the top of the tank. At the curve
or other part of the return or descending pipe a jet pump is placed to utilize high
pressure water, whereby a circulation is maintained through the said vertical pipe and
into the top of the tank where the turbine or other motor is situated. The air in the
upper part of the tank attains a pressure approaching the mean between the "high
automatic "circulation so that the tank water is
pressure" and the "side flow" or
being constantly lifted and it is possible to secure a mean large volume of water
at moderate pressure with a relatively small volume of higher pressure water.
Mechanical facilities are obtained for the transmission of power, especially where high
speed is required, by this method of combining high pressure air and high pressure
water in running water motors.
The volume represented by the high pressure water used in the jet pump must be
discharged from the tank below through a suitable high pressure valve so as to
maintain a constant level of water in the tank and ensure the perfect freedom of the
motor in the compressed air cushion.
MAWDIDN
J. C. MEWBURN,
169, Fleet Street, London,
Agent.

page_text: I JOHN GAMGEE, of 14 Whitehead's Grove, Chelsea in the County of Middlesex
Gentleman 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 an improvement in the method of operating turbines, and
other water wheels, whereby all the advantages derived from the air vessel of an
ordinary water pump are directly obtained, and efficient water motors made available
for indoor erection and use as well as for general purposes.
To effect this the motor is placed and operated in an air and water tight tank of
adequate dimensions to permit the free action of the motor in compressed air.
The said tank is provided with a vertical pipe, adapted internally or externally and
provided with a foot valve in such a way that water occupying the lower part of the
tank may have a channel of ascent and return into the top of the tank. At the curve
or other part of the return or descending pipe a jet pump or ejector is placed to utilize
high pressure water whereby a circulation is maintained through the said vertical pipe
and into the top of the tank where the turbine or other motor is situated. The air in
the upper part of the tank attains a pressure approaching the mean between the " "high
pressure "and the "side flow" <<
or automatic" circulation so that the tank water is
being constantly lifted and it is possible to secure a mean large volume of water at
moderate pressure with a relatively small volume of higher pressure water. Mechanical
facilities are obtained for the transmission of power, especially where high speed is
required, by this method of combining high pressure air and high pressure water in
running water motors.
The volume represented by the high pressure water used in the jet pump must be
discharged from the tank below through a suitable high pressure valve so as to maintain
a constant level of water in the tank and ensure the perfect freedom of the motor in
the compressed air cushion.
The manner in which my invention may be carried into effect is illustrated in
vertical section in the annexed drawing. a, a is an air and water tight tank. b is the
turbine or water wheel placed therein. The shaft c of the turbine or wheel passes
through a stuffing box d at the bottom of the tank a and carries a pulley e from which
the rotary motion of the turbine or wheel can be transmitted for any purpose required.
f. is a vertical pipe carried up from the lower part of the tank a.
This pipe may
either be adapted externally as shown or be otherwise arranged so that water occupying
the lower part of the tank may have a channel of ascent and return into the top of the
tank. The pipe f is provided with a foot valve at g. In the return or descending
portion of the pipe f is a jet pump or ejector / through which is forced water at high
presssure from the pipe i whereby a circulation is maintained through the pipe, and
into the top of the tank a. k is a high pressure valve through which is discharged a
volume of water equivalent to that used in the pump or ejector / so that a constant
level of water is maintained in the tank a as has been already explained. The water
discharged by the valve is returned through the pipe to the pump that forces water
to the ejector h.

page_text: By the aid of an air pump or through the ejector h the volume of air which may be
subject to reduction by absorption in the water can be maintained uniform. When the
high pressure water operating the ejector is allowed to run to waste the loss of air may
be considerable so that in transmitting power the cycles are important. It will be
readily understood that the air in the upper part of the tank a will attain a pressure
approaching the mean between the "high pressure" and the "side flow
"auto-
matic circulation so that the tank water will be constantly lifted and as I have
already stated a mean large volume of water at moderate pressure can be secured with
a relatively small volume of higher pressure water.
وو
ог
The method adopted in the City of London and elsewhere of supplying water for
hydraulic purposes at very high pressures is attended with the constant discharge of
the water from the system at atmospheric pressure. By my method the reduction of
pressure amounting only to a few pounds in maintaining the active flow of the almost
automatic circulation, great economy can be effected by having a general closed cycle
of high pressure water distributed through pipes to the ejectors of the separate turbines.
In such case a definite air pressure being common to all the turbines the return must
enter a tank maintained at the same lower pressure by the action of the circulating
pump.
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 :—
1. A turbine or other water wheel placed in an air tight tank containing air or gas
under pressure and liquid flowing under pressure as herein before described.
2. In operating a turbine or other water wheel, an automatic hydraulic circuit
actuated by a forced flow of liquid through a jet pump or ejector as set forth.
3. In operating a turbine or other water wheel, a double closed cycle of liquid the
larger volume maintained at a high level by pressure of air or gas, and the lesser
volume forced by a pump through an ejector to maintain the current as set forth.