U.S. patent number 3,901,440 [Application Number 05/464,518] was granted by the patent office on 1975-08-26 for drinking fountain pump stand.
This patent grant is currently assigned to Baker Manufacturing Company. Invention is credited to John Gordon Baker.
United States Patent |
3,901,440 |
Baker |
August 26, 1975 |
Drinking fountain pump stand
Abstract
A drinking fountain pump stand having a base engageable on a
well drop pipe, a handle assembly for reciprocating a well pump rod
and an improved fountain assembly. The fountain assembly has a
closed, vented reservoir, a fountain means which directs water from
the reservoir in an upward stream for drinking purposes and
provides a barrier to prevent gravitational backflow of water from
the fountain means to the reservoir, a weir which provides a large
capacity overflow for the reservoir and maintains a substantially
constant water head above the fountain means when an uneven excess
flow of water is received by the reservoir, a bowl for receiving
water discharged from the fountain means, and a hydrant with a hand
operated valve to fill water containers. All internal surfaces of
the fountain assembly are sloped for complete drainage, and a drain
assembly extends from the fountain assembly to an anchor point on
the well foundation. Where water purification is required,
purification circuit means direct raw water from the base to
purification equipment and direct purified water from the
purification equipment to the fountain assembly.
Inventors: |
Baker; John Gordon (Evansville,
WI) |
Assignee: |
Baker Manufacturing Company
(Evansville, WI)
|
Family
ID: |
23844258 |
Appl.
No.: |
05/464,518 |
Filed: |
April 26, 1974 |
Current U.S.
Class: |
239/28;
417/236 |
Current CPC
Class: |
E03B
9/20 (20130101) |
Current International
Class: |
E03B
9/20 (20060101); E03B 9/00 (20060101); E03B
009/20 () |
Field of
Search: |
;239/16,24-32
;137/282,272 ;417/236 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Ward, Jr.; Robert S.
Attorney, Agent or Firm: Long; Theodore J. Winter; John M.
Engstrom; Harry C.
Claims
I claim:
1. In an improved drinking fountain pump stand of the type wherein
a base is engageable on a well drop pipe and has an outlet, and a
handle assembly is mounted on the base for engaging and
reciprocating a well pump rod to cause water to flow from the well
drop pipe to the base outlet, the improvement which comprises a
fountain assembly mounted on the base, said fountain assembly
including:
a. a reservoir having an inlet portion in communication with the
base outlet, said reservoir being defined by walls having internal
surfaces which slope downwardly toward the inlet portion,
b. a barrier tube having an upwardly directed fountain outlet
located outside the reservoir and an inlet end located within the
reservoir at a higher level than the fountain outlet to direct
water from the reservoir to the fountain outlet and prevent
gravitational backflow of water from the fountain outlet to the
reservoir,
c. a bowl extending below the fountain outlet to receive and drain
water discharged from the fountain outlet.
2. A drinking fountain pump stand as recited in claim 1, wherein
the barrier tube fountain outlet is an upwardly facing orifice in
the tube and wherein the barrier tube has a drain opening which
extends downwardly from the lowest interior point of the tube to
prevent retention of stagnant water therein, the drain opening
being of substantially smaller cross-sectional area than the
fountain orifice.
3. A drinking fountain pump stand as recited in claim 1 wherein a
portion of the walls of the reservoir is formed by a weir having an
extended upper edge located at a level above the inlet end of the
barrier tube to provide a large capacity overflow for the reservoir
and maintain a substantially constant water head above the barrier
tube fountain outlet when an uneven flow of water in excess of the
flow through the fountain outlet is received by the reservoir from
the well.
4. A drinking fountain pump stand as recited in claim 3 wherein the
fountain assembly has a vent passage extending from a point within
the reservoir above the upper edge of the weir to the
atmosphere.
5. A drinking fountain pump stand as recited in claim 3 wherein the
fountain assembly further includes:
a. a drain outlet,
b. an overflow passage which receives and carries excess water
flowing over the weir to the drain outlet, and
c. a drain passage extending from the bowl to the drain outlet.
6. A drinking fountain pump stand as recited in claim 5, further
comprising a drain pipe extending downwardly from the fountain
assembly drain outlet, and a drain discharge shoe adjustably
attached to the lower end of the drain pipe, the discharge shoe
having a downwardly extending anchor heel pin for engaging an
anchor recess in a well foundation.
7. A drinking fountain pump stand as recited in claim 1, further
comprising:
a. a water purification outlet pipe connected to the base for
directing water from the base for water purification treatment,
and
b. a purified water inlet pipe connected to the fountain assembly
reservoir inlet portion for delivering purified water to the
reservoir.
8. The drinking fountain pump stand as recited in claim 1, further
comprising:
a. a hydrant spout extending from the fountain assembly reservoir,
and
b. hand operated valve means for opening and closing the hydrant
spout to permit removal of water from the reservoir through the
hydrant spout.
9. In an improved drinking fountain pump stand of the type wherein
a base is engageable on a well drop pipe and has an outlet, and a
handle assembly is mounted on the base for engaging and
reciprocating a well pump rod to cause water to flow from the well
drop pipe to the base outlet, the improvement which comprises a
fountain assembly mounted on the base, said fountain assembly
including:
a. a reservoir having an inlet portion in communication with the
base outlet,
b. fountain means for directing water from the reservoir out of the
fountain assembly in an upward stream for drinking purposes,
and
c. a weir forming a wall of the reservoir and having an extended
upper edge extending substantially the entire width of the
reservoir and located at a level above the fountain means to
provide a large capacity overflow for the reservoir and maintain a
substantially constant water head above the fountain means when an
uneven flow of water in excess of the flow through the fountain
means is received by the reservoir from the well.
10. A drinking fountain pump stand as recited in claim 9, wherein
the fountain assembly has a vent passage extending from a point
within the reservoir above the upper edge of the weir to the
atmosphere.
11. A drinking fountain pump stand as recited in claim 9, wherein
the reservoir is defined by walls having internal surfaces which
slope downwardly toward the inlet portion to prevent the retention
of stagnant water in the reservoir.
12. A drinking fountain pump stand as recited in claim 9, wherein
the fountain means comprises a downwardly sloping barrier tube
having an upper inlet end located within the reservoir at a lower
level than the upper edge of the weir and an upwardly directed
fountain orifice located outside the reservoir at a lower level
than the inlet end, the barrier tube having a drain opening of
smaller cross-sectional area than the fountain orifice which
extends downwardly from the lowest interior point of the barrier
tube to prevent retention of stagnant water therein.
13. A drinking fountain pump stand as recited in claim 9, wherein
the fountain assembly further includes:
a. a bowl extending below the fountain means to receive water
discharged therefrom,
b. a drain outlet,
c. a drain passage extending from the bowl to the drain outlet,
and
d. an overflow passage extending from the weir to the drain
outlet.
14. An improved fountain assembly for a drinking fountain pump
stand having a base which is engageable on a well drop pipe and
which has an outlet, and having a handle assembly mounted on the
base for engaging and reciprocating a well pump rod to cause water
to flow from the well drop pipe to the base outlet, wherein the
improvement comprises:
a. a reservoir mounted on the base and having an inlet portion in
communication with the base outlet, said reservoir being defined by
walls having internal surfaces which slope downwardly toward the
inlet portion,
b. fountain means for directing water from the reservoir out of the
fountain assembly in an upward stream for drinking purposes and for
preventing gravitational backflow of water from the fountain means
to the reservoir, and
c. a weir forming one wall of the reservoir and having an extended
upper edge extending substantially the entire width of the
reservoir and located at a level above the fountain means to
provide a large capacity overflow for the reservoir and maintain a
substantially constant water head above the fountain means when an
uneven flow of water in excess of the flow through the fountain
means is received by the reservoir from the well.
15. A drinking fountain pump stand as recited in claim 14, wherein
the fountain assembly further includes:
a. a bowl extending below the fountain means to receive and drain
water discharged from the fountain means,
b. a drain outlet,
c. a drain passage extending from the bowl to the drain outlet,
and
d. an overflow passage extending from the weir to the drain outlet.
Description
BACKGROUND OF THE INVENTION
1. Field of the invention
This invention pertains generally to the field of hand operated
well pumps, and more particularly to drinking fountain pump stands
for sites such as golf courses, camp grounds, roadside parks and
picnic areas which are remote from public utilities.
2. Description of the prior art
In about 1943 the Wisconsin State Board of Health found that
drinking from the common hand pump, when a clean container is not
available, is unsanitary because it is difficult to drink from such
a pump without using one's hands. Not only are the drinker's own
hands a source of filth and bacteria, but contamination from
previous drinkers which has been retained on the pump or has
backflowed back into the pump and the well are also a health
hazard.
In 1944, Louis T. Watry of the Wisconsin State Board of Health
conceived a drinking fountain hand pump, and within approximately
two years a successful drinking fountain hand pump was on the
market. Many such pumps are still in use. The principal components
of the Watry drinking fountain pump are: (1) a closed reservoir
having a barrier to prevent backflow from the reservoir into the
well and a drain to discharge water and prevent freezing; and (2)
an overflow conduit starting inside the reservoir near its top and
extending downward through the bottom of the reservoir to a level
of about 2 feet above ground.
The Watry pump is operated by moving a pump handle up and down
until water discharges from the overflow conduit. This indicates
that the reservoir is full. At this point, one may drink from a
fountain stream discharging from an upwardly facing orifice in the
reservoir wall near the bottom of the reservoir without further
pumping, or continue pumping to fill a thermos jug, pail or other
container under the lower end of the overflow conduit.
While the Watry pump has been generally successful, its widespread
use in installations in many states under many conditions of use
has revealed certain limitations in its design. Although the Watry
pump provides a drain for the area of the reservoir which is
downstream from the barrier, flat surfaces within that area create
a potential for stagnant water retention and bacteria growth. It is
also possible for rain water and other foreign matter to enter that
area of the reservoir through the upwardly directed orifice in the
reservoir wall, which increases the potential for
contamination.
Children have found that by putting a hand over the lower end of
the overflow conduit and continuing pumping, the pressure may be
increased to raise the height of the fountain stream by as much as
10 times. Such a practice is great fun, but it is also unsanitary
and often is destructive of the pump site. In addition, the flow of
the fountain stream often becomes erratic when a number of persons
wish to drink and pumping is continued, due to the surging water
delivery to the reservoir from the reciprocal hand pump and the
action of trapped air within the upper closed dome of the
reservoir. Such erratic flow makes drinking inconvenient and
venturesome, and encourages both mischievous operation of the pump
handle and reluctance to drink from the fountain.
SUMMARY OF THE INVENTION
I have invented a new and improved drinking fountain pump stand
which utilizes a fountain means which discharges water from the
reservoir in a fountain stream but provides a barrier to
gravitational backflow from the fountain means to the reservoir.
The improved fountain assembly of my pump stand has all sloping
surfaces for complete drainage to eliminate all stagnant water
retention. A single drain collects all overflowing and unused
water, which is discharged at well foundation level by a discharge
shoe anchored in the foundation to resist abuse. Stopping of the
drain will simply cause the fountain bowl to overflow and will not
substantially increase the pressure of the fountain stream.
An extended weir provides a large capacity overflow for the
reservoir and maintains a substantially constant water head above
the fountain means when an uneven flow of water in excess of the
flow through the fountain stream is received by the reservoir from
the pump and the well. Accordingly, the fountain stream will remain
constant even though the rate of pumping is changed substantially.
The reservoir is also vented to the atmosphere to eliminate
irregularities in the fountain stream caused by captive air heads.
Therefore the fountain stream is automatically regulated without a
moving part.
A hydrant is controlled by a hand operated valve to permit water to
be selectively discharged from the reservoir into a container.
When purification of the raw well water is required, the water may
be diverted from a secondary outlet in the pump stand base through
a water purification unit and then returned in purified condition
to the inlet portion of the reservoir for normal use.
Other objects, features and advantages of my invention will be
apparent from the following detailed description taken in
conjunction with the accompanying drawings wherein a preferred
embodiment of the invention is selected for exemplification.
BRIEF DESCRIPTION OF THE DRRAWINGS
FIG. 1 is a side elevation view of a drinking fountain pump stand
exemplifying my invention, with portions thereof shown in section
for purposes of illustration.
FIG. 2 is a section view of the fountain assembly of my drinking
fountain pump stand taken along section line 2--2 of FIG. 1.
FIG. 3 is a sectional side view of the fountain assembly of my
drinking fountain pump stand taken along section line 3--3 of FIG.
5.
FIG. 4 is a side elevation view of a modified form of the drinking
fountain pump stand of my invention, with portions thereof shown in
section for purposes of illustration.
FIG. 5 is a front view of the fountain assembly of my drinking
fountain pump stand illustrated in FIG. 1, with the outer wall of
the overflow passage broken away for purposes of illustration.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now more particularly to the drawings, wherein like
numerals refer to like parts throughout the several views, FIG. 1
illustrates my improved drinking fountain pump stand, shown
generally at 20, connected to a tubular steel well 10. The
illustrated well 10 is of the type having a steel pipe well casing
11 surrounded by a concrete foundation 14. A drop pipe 12 supports
a pump cylinder (not shown) attached to the lower end of the drop
pipe, and a pump rod 13 extends upward from a plunger within the
pump cylinder. The drop pipe 12 will normally have a weep hole (not
shown) having a diameter of 1/8 to 1/4 inch located below the frost
line to drain the pump and avoid freezing in winter use.
My drinking fountain pump stand 20 has a base 21 with a stepped
attachment flange 22 which is engaged on the well casing 11 by a
plurality of set screws 22a. The stepped construction of the inside
of the base attachment flange 22 permits attachment of the base to
standard pipe well casings of different diameters. The base 21 has
an internal drop pipe connecting collar 23 which is tapped to
threadedly engage and support the drop pipe 12 within the well. A
pump handle assembly 27 is mounted on the top end 26 of the base 21
as shown in FIGS. 1 and 4. The pump handle assembly 27 includes a
handle 28 which is pinned to the flat piston bar 30 connected to
the top of the pump rod 13. The piston bar 30 is quided by the
upper end of a cap 29 which is engaged on the base 21. A fulcrum 31
is pivotally connected to the lower end of the cap 29 and to the
handle 28. Manual operation of the pump handle 28 in a conventional
manner causes the flat piston bar 30 and connected pump rod 13 to
reciprocate in a vertical direction. Reciprocation of the connected
piston in the cylinder forces water up the drop pipe into the
interior of the base 21, and to the primary base outlet 24.
An improved fountain assembly 32 is bolted or otherwise mounted on
the pump base 21, as shown in FIG. 1. The fountain assembly 32 has
a reservoir 33 with an inlet portion 35 which in the embodiment
illustrated in FIG. 1 is in communication with the outlet 24 of the
base 21. When the pump stand handle 28 is operated to reciprocate
the pump rod 13, water is forced from the drop pipe 12 up through
the base 21 and base outlet 24 into the reservoir inlet portion 35
and the reservoir 33. As best shown in FIG. 3, the reservoir 33 is
a tank-type structure defined by walls having internal surfaces 34
which slope downwardly toward the inlet portion 35. Accordingly,
when the drinking fountain pump stand is not in use, water will
drain completely out of the reservoir and reservoir inlet portion
into the pump base 21 and well drop pipe 12 to avoid retention of
any stagnant water in the reservoir and inlet portion. The
reservoir 33 is closed for sanitary purposes by cover 33a, which is
preferably bolted to the casting which forms the reservoir.
One wall of the reservoir 33 is formed by a weir 36 having an upper
edge 37. The weir 36 and upper edge 37 extend substantially the
entire width of the reservoir 33, as shown in FIG. 5, to provide a
large capacity overflow for the reservoir. As the pump stand is
operated, water will rise in the reservoir 33 until it reaches the
level of the upper edge 37 of the weir 36, at which time it will
begin to overflow into the overflow passage 38, which extends
downwardly to the drain outlet 50. The extended length of the weir
upper edge 37 permits surging excess water within the reservoir to
overflow freely and maintain a substantially constant water head
within the reservoir when an uneven flow of water is received by
the reservoir from the reciprocating pump.
As shown in FIG. 2, a vent passage 39 extends from the upper
portion of the reservoir 33 above the weir upper edge 37 vertically
downward through the reservoir wall to the atmosphere to vent the
upper portion of the reservoir. The vent passage 39 opens
downwardly to the atmosphere to prevent gravitational entry of
foreign material into the reservoir, and to provide an
inconspicuous vent opening which will not encourage tampering. By
venting the upper portion of the reservoir 33 to the atmosphere, my
improved fountain assembly elminates the possibility of trapping an
air head within the reservoir which would produce irregularity in
the flow of water from the fountain assembly. Accordingly the weir
36 and vent passage 39 combine to automatically regulate the flow
of water from the fountain assembly, without requiring any moving
parts.
A barrier tube 41 extends outwardly and downwardly from the lower
portion of the reservoir 33, as best shown in FIGS. 3 and 4, to
provide a fountain means 40 for directing an upward stream of water
from the fountain assembly for drinking purposes, and for
preventing gravitational backflow of water from the fountain means
to the reservoir. It is seen in FIGS. 3 and 4 that the barrier tube
41 extends transversely across the overflow passage 38, which is
not significantly impeded by the relatively small diameter of the
barrier tube 41. The barrier tube 41 has an inlet end 41a which is
preferably substantially horizontal to provide a uniform level
inlet within the reservoir 33 at a substantially higher level than
the lower end of the barrier tube. The lower end of the barrier
tube 41 is closed as shown. A fountain outlet is provided by an
upwardly opening orifice 42 located near the closed end of the
barrier tube 41. The size of the fountain orifice 42 is selected so
that an upward stream of water will be directed out of the fountain
orifice 42 in a sufficient quantity for users to drink directly
from the water stream when the water head in the reservoir 33 is
maintained above the barrier tube inlet end 41a. The dotted lines
in FIG. 3 represent the approximate path of the fountain stream
when the water head is at or near the weir upper edge 37. It will
be noted that under such conditions the maximum height of the water
stream will be just slightly below the height of the weir upper
edge 37. If operation of the pump handle 28 is discontinued to
terminate the water flow from the well into the reservoir 33, the
reservoir has sufficient capacity with respect to the flow rate of
the fountain orifice 42 so that once the reservoir is filled with
water my drinking fountain pump stand will become a noiseless,
automatically smooth-flowing drinking fountain. As the water level
in the reservoir recedes due to the outward flow of water through
the fountain orifice, the height of the fountain stream will also
gradually decrease at the same rate. When the height of the
fountain stream recedes to an inconvenient level its flow can be
increased to its maximum level by simply operating the pump handle
28. The constant water head above the fountain orifice 42 produces
a smooth, steady fountain stream from the orifice which is
convenient and pleasant to drink, and which can be maintained
indefinitely by operation of the pump handle 28.
A barrier drain 43 in the form of a small hole in the barrier tube
is located in communiation with the lowermost interior point in the
barrier tube 41 to drain from the barrier tube any water which
remains after the water level in the reservoir 33 has receded below
the level of the barrier tube inlet 41a. Accordingly, stagnant
water will not remain in the barrier tube 41a when the drinking
fountain pump stand is not in use. In addition, any small amount of
rainwater which might enter the barrier tube 41 through the
fountain orifice 42 will also be immediately drained from the tube
by the barrier drain 43. The barrier drain 43 is of substantially
smaller diameter than the fountain orifice 42 so that the amount of
water discharged from the barrier drain 43 during operation of the
pump stand will be insignificant. The external location of the
barrier drain 43 permits it to be conveniently inspected and
cleaned.
The fountain assembly 32 additionally has a bowl 46 which extends
beneath the fountain orifice to receive waste water discharged
therefrom. The bowl also extends upwardly to an overhang 47 which
projects over the fountain orifice 42 to partially shield the
fountain orifice from precipitation, leaves, or other falling
foreign material. The rim of the bowl 46 also has a low point
located at a lower level than the bottom of the barrier tube 41 so
that if water should back up in the bowl for any reason, it will
overflow the rim of the bowl before it reaches the level of the
barrier tube 41. The bowl design minimizes the possibility of water
or foreign material entering the barrier tube 41 through the
fountain orifice 42 or the barrier drain 43. The walls of the bowl
46 slope downwardly to a strainer 48 located at the bottom of the
bowl and a bowl drain passage 49 extends downwardly from beneath
the strainer 48 to the drain outlet 50 of the fountain assembly 32.
The sloping design of the bowl 46 and rain passage 49 assures
complete drainage of waste water therefrom.
A drain assembly 58 receives and discharges all of the unused and
wasted water which is discharged from the fountain assembly 32. As
previously described, all of the excess water which overflows the
weir 36 and all of the water which is received in the bowl 46 and
discharged through the drain passage 49 is directed to the drain
outlet 50. Accordingly, the drain outlet 50 provides a single point
drain for the entire fountain assembly. The drain assembly 58
includes a downwardly extending drain pipe 59 which is threadedly
engaged in the drain outlet 50, and a discharge shoe 60 which
engages the drain pipe in telescoping relation. The discharge shoe
has an anchor heel pin 61 which may preferably be engaged in a
recess 15 in the well foundation 14 or other retaining means
provided on the foundation surface. In the preferred installations
illustrated, the well foundation 14 additionally has a downwardly
sloping trough 16 extending outward from the anchor recess 15 to
receive and direct waste water discharged from the discharge shoe
60 away from the well. The anchor heel pin 61 is retained in the
anchor recess 15 by means of set screws 60a threadedly mounted in
the upper end of the discharge shoe 60 which are tightened against
the lower end of the drain pipe 59.
A hydrant outlet pipe 51, illustrated in FIGS. 1 and 2, extends
from the lower portion of the reservoir 33 to provide a convenient
source of water for filling jugs, buckets, or other water
containers. A bail hook 52 is positioned on the hydrant outlet pipe
51 to receive and retain the bail or handle of a container during
filling. A hand-operated hydrant valve means 53 controls the flow
of water from the hydrant outlet pipe 51. The valve means 53
includes a valve closure disc 54 normally seated on the top end of
the hydrant outlet pipe 51 which extends upwardly into the interior
of the reservoir 33. A valve stem 55 extends upwardly from the
closure disk 54 to the valve handle 57 located outside the
reservoir 33. A valve spring 56 engages the valve stem 55 to retain
the closure disk 54 seated on the hydrant outlet pipe 51 in
watertight relation until the user grasps the handle 57 and raises
it against the force of the spring to permit water to flow out of
the reservoir 33 through the hydrant outlet pipe 51. When
sufficient water has been removed, the user releases the handle 57
and the valve spring 56 causes the valve stem 55 to seat the
closure disk 54 on the outlet pipe 51 to prevent further discharge
of water.
FIG. 4 illustrates an important modification of my improved
drinking fountain pump stand. In some areas, water quality or
governmental health standards may require that water delivered from
a well must be purified before it is suitable for drinking
purposes. In the embodiment of my drinking fountain pump stand
illustrated in FIG. 4, means are provided for a water purification
circuit 62 for delivering well water from the pump base 21 to a
conventional water purification unit (not shown), and for returning
purified water from the water purification unit to the inlet
portion 35 of the fountain assembly reservoir 33. In the
illustrated embodiment, my fountain assembly 32 has been modified
at the reservoir inlet portion 35 to receive a closure plate 24a
which extends across the inlet portion 35 at the point of
attachment of the fountain assembly 32 to the pump base 21 to close
the primary base outlet 24. The inlet portion 35 is further
modified to provide a threaded opening 44 for threadedly engaging a
purified water inlet pipe 64, as shown, and to provide for a
downward slope of the lower surface of the inlet portion 35 from
the point of location of the closure plate 24a to the threaded
opening 44. The pump stand base 21 is also modified to provide a
threaded opening at secondary pump outlet 25 to threadedly engage
water purification outlet pipe 63, as shown.
Accordingly, when the handle 28 is operated to deliver water from
the well drop pipe 12 into the base 21, the water will be directed
out of the base through the secondary base outlet 25 and water
purification outlet pipe 63 to the point of location of the
purification unit, which is usually at some minimum proscribed
distance from the well itself. As the pumping operation continues,
the water is forced through the purification unit and returned to
purified water inlet pipe 64 which then directs the water into the
reservoir inlet portion 35 and reservoir 33. Thus, the water
purification circuit which includes outlet pipe 63 and inlet pipe
64 provides communication between the secondary pump outlet 25 and
the reservoir inlet portion 35. My fountain assembly then operates
as previously described to deliver the water to the user through
the fountain orifice 42 or the hydrant outlet pipe 51. Any suitable
water purification unit may be used in such a purification circuit.
One suitable known unit employs iodine blocks which release iodine
to the water as it is directed over the blocks in an amount
substantially proportionaate to the volume of water which passes
over the blocks. Mechanical chlorine dispensing units may also be
employed in such a purification circuit.
In the illustrated preferred embodiments of my improved drinking
fountain pump stand, the pump stand base, handle assembly and
fountain unit are preferably cast from gray cast iron. As shown
most clearly in FIG. 3, the fountain assembly 32 preferably
includes a single casting which forms the reservoir inlet portion
35, the reservoir 33 and weir 36, the overflow paassage 38, the
bowl 46, the bowl drain passage 49 and the drain outlet 50. All
interior surfaces of the casting are downwardly sloping for
complete drainage. The cover 33a is a separate casting which is
bolted to the main casting. A plug 49a is threadedly engaged in the
end of the drain passage 49 to permit cleaning of the drain passage
and the lower portion of the overflow passage 38.
The barrier tube 41 is preferably made of chrome-plated copper for
fast drainage to thereby eliminate water retention within the
barrier tube 41 during periods of non-use.
It is understood that my invention is not confined to the
particular construction and arrangement of parts herein illustrated
and described, and various changes and details may be made without
departing from the spirit of the invention, but my invention
embraces all such modified forms thereof as come within the scope
of the following claims.
* * * * *