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Патент USA US2117907

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May 17, 1938;
‘
w, F_ ‘QGDEN'
V
2,117,907
I WATER SUPPLY SYSTEM
Filed Feb. 27, 1937
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Patented May 17, 1938
2,117,907 '
UNITED ‘STATES2,117,907PATENT ‘OFFICE
WATER SUPPLY SYSTEM
William F. Ogden, Chicago, Ill.
Application February 27, 1937, Serial No. 128,212
6 Claims. (01. 137-49)
This invention relates to water supply systems,
more particularly to water supply systems for
dwellings and the like, and it' has for its object
the provision of an improved system of this
character involving improved means for draining
5
the‘ supply system.
This invention is particularly applicable to
dwellings having a water supply service involving
a hot water tank or boiler arranged to provide
hot water for the dwelling, and it contemplates
an improved drainage system arranged to drain
the-hot and cold water pipes of the dwelling with
out at the same time draining the hot water from
the hot water tank.
In the warmer climates, such as in the Southern
States of'the United States, it is customary on
cold nights when thereis danger of freezing to
cut off the cold water supply to the dwelling and
drain the water piping. In drainage systems
known heretofore, the hot water in the hot water
supplytank or a large portion of it is drained
away along with that from the rest of the piping.
The loss of hot water supply is not only costly,
but it results in much inconvenience in that when
one wishes for hot water, it is necessary to re?ll
the entire tank, turn on the heat, and wait for
the cold water to be heated.
This invention obviates the disadvantages of
the former systems by preventing loss of water
from the hot water tank when the piping system
30
is drained.
It is not limited, however, to dwellings which
are drained in order to prevent freezing in cold
weather, but it is generally applicable to water
3.3 systems of dwellings, and is useful in that it pro
vides means for draining the piping system for
the purpose of making repairs or replacements
of parts Without sacri?cing the hot water supply.
For a more complete understanding of this
40 invention, reference should be had to the accom
panying drawing in which Fig. 1 is a schematic
representation of a household water system em
bodying this invention; Fig. 2 is an enlarged
sectional view of a stop and waste valve used in
45 the water system of Fig. 1; Fig. 3 is a sectional
view of an auxiliary valve used in the system of
Fig, 1 and taken on a larger scale than Fig. 2;
Fig. 4. is a view similar to Fig. 3, but illustrating
the valve in a different operative condition; and
Figs. 5 and 6 are sectional views illustrating valves
of modified form arranged to be used in the sys
tem of Fig. 1 in the same manner as the valve
shown in Figs. 3 and 4, but on smaller scales.
Referring to the drawing, this invention has
55 ‘ been shown as applied to a water system for
dwellings and the like having hot and cold water
faucets Ill and II, a cold water supply pipe or
conduit l2 and a hot water storage tank [3. In
the particular dwelling shown in Fig. 1, the hot ‘
water storage tank I3 is placed in a room having
a floor l4 above the ground, in the kitchen for
example, and the cold water supply pipe [2 is
positioned below the floor. The faucets l0 and
II have been shown as placed in a bathroom l5
removed from the kitchen in which the storage 1 )
tank I3 is placed. Hot and cold water faucets
(not shown) also will be provided in the kitchen,
and elsewhere in the dwelling where it is desired
to use them.‘ The supply pipe i2 is connected
with any suitable source of cold water supply,
such as the city main.
‘
It will be understood that the storage tank
may be provided with any suitable source of heat,
such as electric heating elements, or a gas burner.
- The cold Water supply pipe l2, as shown, is 20
connected with the lower end of the hot water
storage tank l3, and also is connected by means
of a pipe or conduit l6 with the cold water
faucet H. The hot water faucet I0 is connected
with the top-most portion of the tank l3 by means 2,
of a hot water draw-off pipe or conduit I'I. As
shown, the hot water draw-off pipe I‘! is directed
downwardly through the kitchen, ?oor l4 and
thence under the floor 14 to a partition 18 of the
bathroom‘ through which it is directed to the
faucet Ill. The cold water pipe l6 connecting the
supply I2 with the faucet H is also directed up
0
wardly through this partition.
Preferably, a pressure release valve IQ of any
suitable construction will be connected in the
supply pipe l2 adjacent the hot water tank [3, as
shown in Fig. 1.
Connected in the cold water supply pipe l2 be
fore the connection between the supply pipe and
the pipe I6 is a stop and waste valve 20 which is 40
shown more clearly in Fig. 2. The valve 20, when
it is in its position shown in Figs. 1 and 2, opens
the supply pipe I2 so that cold water can ?ow
from the supply source through the pipe l2 to
the ‘tank l3 and through the pipe IE to the’ cold 45
water faucet ll. However, when the valve is
moved in a counter-clockwise direction 90“ from
its position shown in these ?gures, it closes the
water supply, and opens the conduit l2 on the
tank side of the valve 20 and also the conduit [6 50
tothe atmosphere through the vent 2|.
,Arranged in the supply pipe I2 is an auxiliary
valve 22. This valve, as shown, is connected in
the pipe I2 between the tank 13 and the valve
20, and preferably, between the valve 20 and the 55
2
2,117,907
pressure relief valve I9. The valve 22 controls
a connection pipe or conduit 23 which is con
nected with the hot water take-01f pipe [1, and
with the pipe I2 through the valve.
Normally
use the petcock, and when the petcock is not
the valve 22 is in its position shown in Fig. 3
so as to open the supply conduit I2 whereby cold
water may ?ow from the source of supply into the
used, the portion of the pipe I1 under the ?oor
should slope downwardly toward the point where
tank I3, and to shut 01f the pipe 23. However,
hot water tank so that when the valve 20 is
when the valve is moved in a counter-clockwise
direction 90° from its position of Fig. 3 to its
position shown in Fig. 4, it shuts off the tank l3
from the supply pipe I2 and opens the pipe 23
so as to connect the hot water take-off pipe I‘!
15
cook 24 should be graded downwardly somewhat
toward the petcock so as to give a gravity ?ow
of water to the petcock. It is not necessary to
the portion of the pipe rises vertically to the
opened in the draining operation, and the hot
water faucets are opened in the order of their
greatest distance from the tank, all water in the
pipes will be siphoned out through the valve 20.
At times there are certain persons who prefer
directly with the pipe I2, as clearly shown in
Fig. 4.
to protect the water piping system from freezing
A suitable drainage petcock 24 is connected in
the hot water draw-01f pipe I‘! at the end; as
the faucets throughout the cold period, rather
than to drain the pipes as described previously.
This may be accomplished by turning the auxil
iary valve 22 to its position shown in Fig. 4, while
leaving the valve 20 in its position shown in Figs.
1 and 2. Then by cracking the faucets slightly
cold water flows through both the hot and cold
shown in Fig. 1.
i
It will be understood that in the normal oper
ation of the system the valves 2|] and 22 will be
in their respective positions shown in Figs. 1, 2
and 3 so that cold water can flow from the con
duit I2 to the hot water tank I3 and also through
the conduit IE to the cold water faucet ll. Cold
water, of course, may be drawn from the faucet
I I as desired, and hot water may be drawn from
the faucet I 0. In this condition of the system,
the pipe 23 is closed at the valve 22 so that the
hot water draw-01f pipe I‘! is separated from the
cold water supply pipe l2.
When it is desired to drain the system, as for
example, in case the weather becomes colder
than normal and there is danger of freezing, or
in case it is desired to repair some part of the
system, the stop and drain valve 20 is moved from
its position shown in Figs. 1 and 2 to a position
at right angles thereto, as previously described.
This operation shuts off the supply of water to
the water system of the house, and also connects
40 the pipe l2 on the tank side of the valve 20 to
the atmosphere through the vent opening 2|. At
this time, it is preferable to open petcock 24. If
now the auxiliary valve 22 is moved from its posi
tion of Figs. 1 and 3 to its position of Fig. 4, as
described previously, the tank I3 is shut 01f from
the pipe I2, while the conduit I1 is connected
with the pipe l2 through the pipe 23 and the valve
22. Now if the hot water faucet Ill be opened, it
will be apparent that the water in the hot water
piping system will drain through the pipes I1, 23
and I2 to the vent 2| in valve 28. Hot water may
also drain from the petcock 24. The hot Water
in the tank i 3, however, is shut off from the pipe
l2 so that all of the water will remain in the
hot water tank. The cold water in the house sys
tem may be drained by opening the cold water
faucet H. t will be understood that normally,
there will be a number of hot water and cold wa
ter faucets. Preferably, the hot water faucets
will be opened ?rst, and preferably in the order of
their distance from the hot water tank I3, that
is, the most distant hot water faucets should be
opened ?rst and then the rest in the order of their
distance from the tank. After the hot water lines
have been drained, the cold water faucets may be
opened. The entire system is thus emptied of
water with the exception of the hot water tank l3.
It is preferable that the pressure relief valve
l9 and the auxiliary valve 22 be located as close
to the hot water tank I3 as is practicable so as to
reduce to a minimum the amount vof water
trapped in the pipe l2 between the tank and the
valve 22 when the latter has been operated to shut
off the tank from the water supply source.
The portion of the pipe I‘! leading to the pet,
by allowing a small stream of water to ?ow from 15
water faucets in a small stream.
In Fig. 5 there is illustrated an auxiliary valve
25 of modi?ed form intended to be used in place 'i
of the valve 22, and having a slightly di?erent
construction. The valve 25 is provided with
aligned threaded openings 26 and 21 for inser
tion of the valve into the supply conduit I2, and
a threaded nipple 28 for connection with the pipe
23 that connects the hot water take-01f pipe I‘!
with supply pipe I2. The opening 21 is connected
to the portion of pipe I2 that is connected directly
with the tank I3. The valve is further provided
with a threaded aperture 29 in which the pressure 35
relief valve I9 may be connected directly.
In Fig. 6 there is illustrated a valve 30 of the
globe type which may be used in place of the valve
22. This valve 3|], as shown, is provided with
threaded openings 3| and 32 for connection with
the supply pipe I 2, and a threaded opening 36
for connection with the pipe 23 leading to the
hot water take-off pipe IT. The opening 32 is
connected in that portion of pipe I2 that is con
nected directly with the tank I3. As shown, a
valve member 33 operates between a pair of ver
tically spaced seats 34 and 35. When the valve
member is in its position shown in Fig. 6, it closes
off the supply source to the hot water tank and
4O
opens the pipe 23 connected with the hot water '
take-off pipe l1. When the valve member is
moved to close its upper seat 34, it opens the sup
ply pipe to the hot water tank and closes the
connection between the supply pipe and the hot
water take-off pipe H. The valve 30 can be
used as a mixing valve for hot and cold water.
It will be observed that if the valve member 33
be adjusted to a suitable position between its
seats 34 and 35, cold water from the supply source
will flow not only directly through the valve to (31')
the hot water tank, but also a portion will flow
through the seat 34 and the pipe 23 to the hot
water take-off pipe I 'I where it mixes with the
hot water.
It will be understood that if the cold water sup (if;
ply pipe enters the top of the tank instead of the
bottom, the auxiliary valve (22, 25, 30) may be
positioned in the pipe adjacent to and above the
tank.
It is to be noted that if the auxiliary valve
(22, 25, 30) is operated to shut off the hot water
tank'from the supply source, while the valve 20
is left in its normal open position shown in Fig. 2
and the faucets be closed, the water in the tank
I3 isfree to expand through the pipes I1 and 23 75
2,117,907
and the valve 22 to the supply pipe l2 against the
pressure of the water supply source. In other
words, the entire water supply system is “open”
to the water supply pressure irrespective of
whether the auxiliary valve has opened or closed
the tank to the supply source. Of course, if there
is a check valve in the supply pipe, the relief
valve l9 functions to prevent a dangerous rise in
pressure.
While I'have shown particular embodiments of
10
my invention, it will be understood, of course,
that I do not wish to be limited thereto since
many modi?cations may be made, and I, there
fore, contemplate by the appended claims to cover
15 any such modi?cations as fall within the true
3
tion between said hot water take-off and said cold
water supply pipes.
4. A household water supply system compris
ing hot and cold water faucets, a hot water stor
age tank, a cold water supply pipe connected with
the lower end of said tank, a pipe connecting said
supply pipe with said cold water faucet, a hot
water take-off pipe connecting the top of said
tank with said hot water faucet, a valve connected
in said supply pipe before said pipe that connects 10
the supply pipe with the cold water faucet are
ranged in one position to open the cold water sup
ply to said faucet and said tank, and in another
position to shut off the supply and to open the
tank and faucet side of said valve to the atmos 15
phere, a. second valve in said cold water supply
pipe on the tank side of said ?rst valve arranged
spirit and scope of my invention.
What I claim as new and desire to secure by ~ in one position to open the supply pipe to said
Letters Patent of the United States, is:
tank, and in another position to shut off the
l. A water supply system comprising a hot wa
supply pipe to said tank, and a pipe connecting 20
20 ter tank, a hot water take-off conduit connected
said second valve with said hot water take-off
with said tank, a cold water supply conduit con
pipe at a point between said tank and said hot
nected with said tank, a valve in said latter con
faucet controlled by said second valve so
duit arranged in one position to open the conduit water
that in said other position thereof said pipe con
to supply cold water to the tank, and in another nects said take-off pipe to said supply pipe 25
25 position to cut off the supply of cold water to the through said second valve.
tank and to open the conduit on the tank side of
5. A household water supply system compris
said valve to the atmosphere, a conduit between
ing hot and cold water faucets, a hot water stor~
said cold water supply and said hot water take
age tank, a cold water supply pipe connected with
off conduits, and valve means controlling said the lower end of said tank, a pipe connecting said 30
30 last-named conduit arranged in one operative
supply pipe with the cold water faucet, a hot
condition to connect said hot water take-off con
water take-off pipe connecting the top of said
duit with said cold water supply conduit on the tank with said hot water faucet, a valve connect
tank side of said valve and to cut off said supply ed in said supply pipe before the pipe that con
conduit from said tank at said side, and in an
nects the supply pipe with the cold water faucet 35
35 other operative condition to open said supply arranged in one position to open the cold water
conduit to said tank at said side and to cut off supply to said faucet and said tank, and in an
said hot water take-off conduit from said cold other position to shut off the supply and to open
water supply conduit.
the tank and faucet side of said valve to the at
2. A water supply system comprising a hot wa
mosphere, a second valve in said cold water sup
ter storage tank, a cold water supply pipe con
40 nected with said tank, a hot water take-off pipe ply pipe on the tank side of said ?rst valve ar
ranged in one position to open the supply pipe
connected with the tank, a valve in said c'old wa
to said tank and in another position to shut off
ter supply pipe arranged in one position to cut
off the cold water supply to said tank and to
open the tank side of said supply pipe to the at
45 mosphere, a conduit between said cold water sup
ply and said hot water take-off pipes, and a sec
ond valve in said supply pipe on the tank side of
said ?rst valve arranged in one position to open
said side to said tank, and in another position to
50 close said side to said tank, and to establish a
connection between said hot water take-01f pipe
and said cold water supply pipe through said con
duit.
3. A water supply system for dwellings and the
55 like comprising a hot water storage tank, a cold
water supply pipe connected to the bottom of said
tank, a hot water take-off pipe connected with
the top of said tank, a valve in said cold water
supply pipe arranged in one position to supply
60 cold water to said tank and in another position
to cut off the cold water supply to said tank and
to open the tank side of said supply pipe to the
atmosphere, a connection pipe between said cold
water and said hot water take-off pipes on the
65 tank side of said valve, and a second valve in
said supply pipe on the tank side of said ?rst
valve controlling said connection pipe arranged
in one position to open said side to said tank and
to close said connection pipe, and in another
70 position to close said side to said tank and to
open said connection pipe to establish a connec
the supply pipe from said tank, a pipe connecting
said second valve with said hot water take-off 45
pipe at a point between said tank and said hot
water faucet controlled by said second valve so
that in said other position thereof said pipe con
nects said take-off pipe to said supply pipe
through said second valve, and a pressure relief 50
valve connected in said supply pipe between said
tank and said second valve.
6. In a water supply system for dwellings and
the like having a hot water tank, a valve having
means for connecting it in a water supply pipe 55
between the source of supply and said tank and
arranged in one position to connect said tank
with the supply source and in another position to
shut off the tank from the supply source, a pipe
attached to and controlled by said valve adapted 60
to be connected with the hot water take-off pipe
of said tank so that in said last named position
of said valve, said take-off pipe is connected with
said supply pipe through said valve, and a sec
ond valve in said supply pipe between said ?rst 65
named valve and said supply source arranged in
one position to connect said supply source with
said tank through said pipe and in a second to
cut off the supply source and to connect said pipe
with the atmosphere.
WILLIAM F. OGDEN.
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