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Dec. 3, 1946.
v. L. TANNEHILL
2,412,107
LIQUID SUPPLY SYSTEM
‘Filed Nov. 20, 1944
yi
INVENTOR.
W
Patented Dec. 3, 1946
2,412,107 _
UNITED STATES PATENT ' OFFICE
2,412,107
LIQUID SUPPLY SYSTEM
Vernon L. Tanneliill, Fort Wayne, ma.
Application November 20, 1944, Serial No. 564,385
8Clalms. (01. 103-25)
2
This invention relates to liquid supply systems
.
devised numerous ways of replenishing the en
trapped air in the pressure tank so as to insure
of that general type in which an automatically
proper functioning of the system.
regulated electrical motor-driven pump is em
An object of the instant invention is to provide
ployed in conjunction with a pressure tank in
means, in a liquid distributing system of the type
which a quantity of liquid from a source of supply
above identified, to circumvent escape or deple
is forced by the pump under restraint of en
tion of a' definite predetermined quantity of en
trapped air in the tank, so the liquid accumulated
trapped air within the pressure tank, wherefore
in the tank is sustained under air pressure in
,to perpetuate operation of the system at its maxi
readiness for instant use upon being liberated
through a service pipe.
10 mum e?iciency.
Another object of the invention is to aii'ord, in
Heretofore, in the operation of such appara
an air-pressure liquid-distributing system, means‘
tus, the presure tank initially is full of air
by which is permanently maintained within the
which is compressed when liquid is forced into
pressure tank of the system a segregated selected
the tank, the pressure of air being raised directly
as the quantity of liquid accumulated in the tank 15 quantity of air susceptible to compression and
expansion as ?uid is supplied to and withdrawn
increases. It has been found that more or less
from the system.
air becomes entrained with the liquid during its
And a further object of the invention is to
passage out through the service pipe and thus es
maintain an air pressure ?uid distributing sys
capes from the body of entrapped air in the pres-,
sure tank resulting eventually in complete deple
tion of an essential quantity of compressed air
within the tank. The system thus becomes wa
20 tem in proper operable condition without require
ment of replenishment of its essential air en
trapped therein, or of periodic drainage of the
pressure tank usually necessitated because of
water-logging of the system.
Generally, the energizing circuit for the pump
Other objects and advantages of the invention
motor is controlled by a commonly known regu 25
appear in the following description.
lator switch, which operates automatically as in
An illustrative embodiment of the invention is
?uenced by pressure in the liquid circulating sys
shown in the accompanying drawing which is a
tem, with which the regulator is connected. In
front elevational view, partly cut away, of a
the operation of such apparatus the regulator
switch automatically is opened when the pressure 30 structure in which the invention is incorporated.
The illustrative embodiment of the invention
in the system reaches a predetermined maximum
consists of a water distributing system in which
high point, causing the pumping operation to
is included, a pump I having a suction pipe con
cease, and subsequently, when the pressure in
nection 2 with any suitable source of liquid sup
the system is lowered to a predetermined mini
mum point, due to withdrawal of liquid from the 35 ply, and which is provided with an electric motor
3, an energizing electric circuit 4 therefor, an air
service pipe, the switch is closed resulting in re
pressure tank 5 connected at its lower end portion
sumption of the pumping operation and re?lling
with the pump discharge pipe 5', an ordinary
of the pressure tank. By this arrangement, op
pressure actuated controller switch 6 connected
eration of the pump is periodic and occurs upon
partial depletion of the body of liquid accumu 40 in the energizing circuit, and an elastic collapsi
ble pouch ‘I connected hermetically with the air
lated in the pressure tank. Thus, the tank is
pressure actuated controller switch.
automatically recharged with a fresh supply of
The motor-driven pump and the expansion
liquid, stored under air pressure, in readiness for
tank are of any well known construction, con
instant delivery through the service pipe upon
opening of an outlet therefor. However, when 45 nected together and arranged so that ?uid is sup
plied to the tank from the pump and discharged
the body of compressed air entrapped in the liq
from the tank througha distributing pipe 8 con
uid distributing system is substantially ex
nected with the lower end portion thereof. By
hausted, the system becomes water-logged,
this means is accumulated a, reserve quantity of
whereupon the automatic action of the regulating
switch becomes erratic which causes starting of 50 liquid and compressed air within the tank, so
the pumping operation upon each slight with
that the stored liquid may be withdrawn upon
opening of an outlet in the distributing pipe,
drawal of liquid from the service pipe, and im
mediate restarting of the pumping operation up
such as a faucet (not shown), the'out?ow of liq
uid through the distributing pipe being urged by
on closing of the outlet of the service pipe. To
avoid such intolerable conditions there have been 55 pressure of the entrapped air in the tank.
ter-logged.
2,412,107
4
The elastic compressible pouch ‘I has a neck
9 that is tightly secured about a nipple III that
extends into the top of the tank, there being pro
vided a clasp II that encompasses the neck and
tightly constricts it about the nipple to e?ect an
hermetical seal. The nipple depends from a hung
?xture I! that surmounts the tank and closes the
opening ll therein, and preferably has an upright
ing of the pumping operation and continuance
thereof with consequent ?ow of ?uid into the
tank, corresponding rise or pressure therein, and
compression of the pouch and its contained air
to a predetermined maximum point which causes
the controller switch automatically to open, thus .
terminating temporarily the pumping operation.
When the accumulated ?uid within the tank is
Post I 4 on whicbis. mounted the. controlierswitch
nipple
6, thereand
"being
post:aa?'ording
duct git extending
air communication bei
withdrawn thereirom thWWhthedM?bu?m
,pip'eitheiconsequent reduced
10
pressure within
thetan'k ‘permits expansion of the segregated air
within the pouch and consequent closing 01 the
tween the pouch and the operating mechanism,
for the switch.
" energizing circuit by the controller switch, thus
Means are provided by which to in?ate *orgde-r 1);, reestablishing the pumping operation and re
?ate the pouch, which consists conveniently 01a
munication
pipe it connected
with the
with
duct
theII,post
thereirun,
v'll‘arid'ha's'
andmitsop-g
coin;
posite end is provided with an air inlet ‘check,
l5 7
charging ofv the pressure tank. These operations
,
continue periodically with more or less regularity
:: ;, accordingly-as the ?uid from the pressure tank is
withdrawn through the distributing pipe.
valve. I], such as is ordinarily provided on -' the " '‘ ‘
outstanding feature or the invention is
valve stem of a pneumatic tire. Thus, air may 20 that a substantial body or entrapped‘air is main
be supplied > through ‘the valve; under..- pressure
tained "constantly; {enveloped by ‘ and ' responsive
fromysa suitableisource; to, the pouch,~or released
to variations of pressure of the transient fugitive
?uid in the ‘system while segregatedtherefrom,
wherefore'to obviate water-logging'and perpetu
ate continuity in the‘operation‘oithe apparatus
.therefromasdesired.
~Prei'erably,-a.pressure w
gauge
I” i8» of any suitable
'
type is connected by means of a supportingytube 26
I! ‘with the air pipe |6,‘wherefore to ascertain
under its" best operating conditions.
the degree-oi’ air, pressure initially introduced to
'' ‘Variations from‘ the particular construction
' inflate, the pouch, and any subsequent internal
above disclosed maybe resorted to by the exer
variations of pressure that occur during the pas
else of skill in the art, without departure from
sage of ?uid into and from the tank.
~
‘ 30 the scope of‘ the invention, and the following
The particular relative arrangement of the
claims are intended to be inclusive of such
pressure tank, air pouch controller switch, and
variations.
pressure gauge, in the illustrative embodiment of
WhatIclaimis:
'
‘the invention, is exemplary, but not entirely es
1. An air pressure liquid distributing system
sential to full functioning of the system. For 35 in which are included an air pressure tank, a
instance, the air pouch ‘I may be positioned with
motor-driven pump connected with said tank for
in the air pressure tank without support by the
supplying-liquid thereto, an air pressure operated
nipple or connected relation with the controller
switch. As an alternative, the air pouch may be
in?ated to a desired extent and its neck closed
so the pouch itself is hermetically sealed and left
at random within the tank. By this arrange
- ment air communication between the tank, con
troller switch and gauge is established therebe
tween entirely independent with respect to the
air pouch. The purpose of the invention in this
arrangement is realized by the establishment
, within the pressure tank of a permanently seg
regated compressible and expansible body of air
by which is constantly maintained within the
pressure tank an essential reserve capacity of air,
wherefore is thwarted water-logging oi' the pres
sure tank. and the system. With the parts thus
controller. for the pump motor, an elastic in
40
?ated compressible pouch, disposed within the,
tank, having an air communicating connection
with the controller and hermetically sealed with
respect to said tank, a connection between the
controller and the pump motor, a valve-con
trolled means through which to in?ate said
pouch, and a pressure gauge in connection with
said means to indicate the degree of air pressure -
within said pouch.
2. An air pressure liquid distributingsystem
in which are included an air pressure tank, ,a
motor-driven pump connected with said tank for
supplying liquid thereto, an air pressure operated
controller for the pump motor, anin?ated elastic
compressible pouch, disposed within the tank,
arranged, the in?ated air pouch is compressed
having an air communicating connection with
more or less accordingly as the pressure within
the controller and hermetically sealed with re
the tank varies, while its initial content of air
spect to said tank, and a connection between
is segregated entirely from the transient ?uid in
the controller and the pump motor.
which the pouch is enveloped, so that saturation
3. In an air pressure liquid distributing system
by or entrainment with the segregated fugitive
having an air pressure tank provided with a
transient ?uid that passes into and from the tank 60 distributing pipe outlet and means for supplying
is circumvented. Thus, proper functioning of the
liquid to said tank, an air pressure-operated
expansible and compressible air body within the
controller operatively connected with said means,
and an inflated elastic air pouch disposed with
in said tank encompassed by ?uid entrapped
Operation
66 therein, and having an air communicating con
In operation, the air pouch is initially in?ated
nection with said controller whereby the con
by introducing air under pressure by any suitable
troller is actuated according to the air pressure
means through the check valve I‘! so there is per
within the pouch.
manently established within the pressure tank 5
4. In an air pressure liquid distributing system
a predetermined quantity of air segregated by, 70 in which is included an air pressure tank pro
the pouch from its envelopment of transient ?uid
vided with means for supplying ?uid thereto
that passes into and from the tank.
under pressure and having a distributing .pipe
The air pressure within the pouch initially is
outlet, a pneumatically operated controller for
such as to permit closing of the energizing cir
said means, and an in?ated air pouch enveloped
cuit by the controller switch, thus to cause start 76 by said ?uid, hermetically sealed relative there
pouch‘ is maintained.
9,413,107
to and having operative connection with said
control, the arrangement being such that the
pouch is compressed or expanded as the pres
sure of the enveloping ?uid varies thus causing
operation of the controller accordingly.
5. In an air pressure liquid distributing system _
in which is included an air pressure tank pro
rangement being such that a de?nite quantity
of air is segregated from the enveloping ?uid
and constantly maintained within said tank.
7. An air pressure ?uid dispensing system hav
ing a member which entraps air therein, said
member having in connection therewith means
for supplying ?uid thereto under pressure and a
discharge outlet, and an elastic pouch disposed
under pressure and having a distributing pipe
within said member in which is contained per
outlet, a pneumatically operated controller for 10 manently a. de?nite quantity of air under pres
said means, having air communication with said
sure susceptible to contraction and expansion
pressure tank, whereby the controller is operated
correspondingly with variations of ?uid pressure
automatically by variations of pressure of the
within said member.
air in said tank, an in?ated air pouch located
8. An air pressure ?uid dispensing system hav- -_
within said tank enveloped by the ?uid therein
ing a member which entraps air therein, said
and hermetically sealed relative thereto, thus to
member having in connection therewith means
prevent the air in the pouch from entrainment
for supplying ?uid thereto under pressure and
with the ?uid during withdrawal thereof from
a discharge outlet, and an expansible and con
the tank.
tractible means enveloped by the ?uid entrapped
6. In an air pressure ?uid distributing system
in said member in which is contained permanent
in which is included a tank which entraps air
ly a body of air under pressure segregated by said
under pressure, an in?ated air pouch disposed
means from the enveloping ?uid.
within said tank enveloped by the ?uid therein
and hermetically sealed relative thereto, the ar
VERNON L. TANNEHIIJ...
vided with means for supplying ?uid thereto '
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