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Патент USA US3090573

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May 21, 1963
R. G. cHEEsEBoRo
3,090,563
ROTARY SPRINKLER
Filed Aug. 27, 1962
2 Sheets-Sheet 1
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May 21, 1963
R. G. cHEEsEBoRo
3,090,563
ROTARY SPRINKLER
Filed Aug. 27, 1962
I
2 Sheets-Sheet 2
tes
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ingesta
Patented May 2l, 1963
1
2
3,090,563
“lower,” “above,” “below” and the like will be employed
simply for convenience in referring to the drawings and
that such terminology is not employed by way of limita
RÜTARY SPRINKLER
tion, since it will be obvious that the invention will re
spond operably to the impact of fluid under pressure re
fornia
gardless of the attitude of the device relative to the hor-i
Filed Aug. 27, 1962, Ser. No. 219,601
Zontal.
12 Claims. (Cl. 239-206)
interposed between the inner end 5` of the threaded
skirt portion 6 of the end cap 2 and a shoulder 7 formed
This invention relates to irrigating sprinklers and more 10 by a counterbore portion 8 of the lower inner portion of
particularly to an improved form of hydraulically pow
the body 1 is a jet forming end plate 9' having a series of
Robert G. Cheeseboro, Los Angeles, Calif., assignor to
Febco, Inc., Los Angeles, Calif., a corporation of Cali
ered, rotating sprinkler.
A principal object of the invention is to provide a hy
draulically powered rotary sprinkler for irrigating pur
poses having means for adjusting the rate of rotation in
dependently of the volume of water passing through the
sprinkler.
- Another object of the invention is to provide a rotary
radially spaced inclined slits 10 extending therethrough as
shown in FIGS. 4 and 5. Spaced above the plate 9 is a
reduced diameter portion 11 of a body member 1 result
ing in an increased wall thickness of the body said re
duced diameter portion terminating at its upper end in a
transverse partition wall 12. This reduced diameter por
tion is provided with a series of passages 13 extending
sprinkler in which the sprinkler head is caused to rotate
therethrough parallel to the axis of the body member for a
by a iluid coupling device whereby, stoppage of rotation 20 purpose to be presently described. The lower end of said
ofthe sprinkler head for any reason will not damage the
reduced diameter portion 11 is provided with Ia counter
rotation imparting mechanism.
bore 14 in which an end plate 15 is secured by any suitable
Still another object of the invention is to provide a ro
means, as, for example, a snap ring 16 engaging a groove
tary sprinkler having a iluid coupling interposed between
17 in the Wall surface of the counterbore 14.
a driving turbine rotor or empower and a rotating sprinkler 25
The partition 12 and end plate 15 together with the
head and further, having means accessible from the ex
inner periphery of the reduced diameter portion 11 of
terior of the sprinkler for adjusting the spacing between
the body 1 define a circular cavity 18 in which the rotary
the driving and driven members of the fluid coupling with
fluid coupling means of the device is contained; said fluid
resultant variation of the slip between said members and
coupling means comprising a driving component 19‘ and
consequent variation in the rate of rotation of the sprinkler 30 a driven component 2t). ' The driven component 20 com
head relative to the rate of rotation of the actuating im
prises a unitary fan-like member having a backing plate
peller.
portion 21 disposed adjacent to the underface of the par
Still another object of the invention is to provide a
rotary sprinkler in which the foregoing objectives are
tition 12 yand terminating in a depending Skirt 22; said
plate having an axially disposed, internally threaded hub
realized in practice, which is composed of few parts of 35 23 extending downwardly from said backing plate por
simple, sturdy design, which is capable of economical
tion a lesser distance than said skirt portion. The driven
manufacture and which is reliable for its intended purpose.
component 20 further includes a plurality of radial vanes
24 extending outwardly from said hub to said skirt the
additional objects and advantages as may subsequently
lower edges of said vanes for about the inner half of their
appear, the invention resides in the parts, and in the con 4-0 length lying in the plane of the lower end of said hub as
at 25 and the outer portions of said vanes lying in the
struction, combination and arrangement of parts described,
by way of example, in the following specillcation of a
plane of the lower end of said skirt as at 26; said lower
edges of each of said vanes being connected by vertical
presently preferred embodiment of the invention, refer
ence being had to the accompanying drawings which form
faces 27.
a part of said specification -and in which drawings:
Tightly engaging the interior of the hub 23 is the thread
FIG. 1 is a side elevational view of a rotating sprinkler
ed lower end 2S of a sprinkler driving member 29; said
constituting a presently preferred embodiment of the
threaded lower end extending from a shoulder 30 which
engages the upper end face of the hub 23. The partition
present invention,
12 is provided with a bore 31 extending therethrough in
FIG. 2 is a top plan view of the sprinkler shown in
50 the axial line of the body 1 through which the sprinkler
FIG. 1,
driving member 29 extends and said bore at its upper face
FIG. 3 is a greatly enlarged, medial sectional View taken
terminates in a oounterbore 32 in which a gasket 33y is
on the line 3-3 of FIG. 2,
seated. The gasket 33 on its inner diameter has a close
FIG. 4 is a fragmentary sectional view of a turbine jet
llt with the body of the sprinkler driving member 29 and
nozzle and impeller blade as viewed on the line 4_4- of
With the foregoing objects in view, together with such
55 the upper surface of partition 12.
The sprinkler driv
ing member 29 is provided with an annular flange 34
which rests on the upper faces of the gasket 33 and the
peller component of the device, the section being taken
partition 12; it now being noted that the upper end of the
on the line 5-5 of FIG. 3,
hub 23 engages the lower surface of lthe partition 12,
FIG. 6 is a transverse sectional view of the fluid cou
60 whereby, the driven member 20` and the sprinkler driving
pling means taken on the line 6_6 of FIG. 3, and
member 29, as a unit, are journaled for rotation in the
FIGS. 7 and 8 are fragmentary `transverse sectional
partition 12 while being restrained against endwise move
views taken respectively on the lines 7--7 and 8_8 of
ment.
FIG. 3.
FIG. 3,
FIG. 5 is a transverse sectional view of the turbine im
The iluid coupling driving member 19 comprises a
Referring to the drawings, the illustrated embodiment
of the invention comprises a generally cylindrical body 65 unitary casting having an end wall portion 35 terminating
in a short upturned peripheral skirt portion 36 and said
member 1 having .an internally threaded lower end closed
end wall having an elongated hub 37 projecting beyond
by an end cap 2 with an interposed gasket 3; said end cap
both sides of said end wall portion. The hub 37 has an
having an axially disposed, depending, hollow, internally
axial bore 3S extending therethrough terminating at its
threaded boss 4 adapted to mount the device on the end 70 upper end in a counterbore 39. The hub 37 below said
of a supply pipe P. It should be mentioned that as the
end wall 35 extends in bearing engagement through a bore
description of the invention proceeds, the terms “upper,”
37’ in the end plate 15 and below said plate the end of
3,090,5@3
3
A.
said hub is exteriorly threaded as at 40 for engagement
tween these components and consequent closer or less
with the internally threaded counterbore 41 disposed ax
close relation between the rate of rotation of the driven
ially in the upper end of the hub 42 of the turbine impeller
component to that of the driving component.
43 of the device.
Above the partition wall 12, the upper end of the body
The liuid coupling driving component 19 is further pro
member 1 is internally threaded for closure by -an upper
vided on the upper face of the end wall portion 35
end cap 61; said end cap having an annular flange 62
_thereof with a plurality of radially extending varies 44
overlying the upper end 0f the body member 1 and se
including outer portions 4S of lesser height and inner
curing a sealing gasket 63 against saidend of the body
portions 46 of greater height said outer and inner por
member. Water passing through the impeller cavity 54
tions being connected lby vertical wall end faces 47 of l0 is conducted to the passages 13 in the reduced diameter
slightly less radial dimension than the radial dimension
portion 1l of the body member to the cavity 64 formed
of the vertical end wall faces or portions 27 of the driven
by the partition wall 12, the end cap 6-1 and the inner
component. It will be noted that the described con
wall surface of the body member 1. The end cap 61
ñguration of the vanes of the Huid coupling components
includes Ia depending, axially disposed, circular wall 65
permit axial adjustment of the components toward and
terminating in -an inwardly extending annular flange por
away from one another to increase or decrease the iiuid
tion l66; said wall and ñange constituting a coaxially
slip therebetween while preserving the valuable principle
of having the vanes »of the driven component surround
ing the ends of the vanes of the driving component.
Additionally, it will be noted that the outer diameter of
the components 19 and 29 are slightly less than the inner
diameter of the cavity 18. Also, as shown in FIG. 6,
the driving component preferably has _a greater number
of vanes than the driven component such number, .pref
erably, being other than a multiple of the number of
varies on the driven component.
Y
Journaled in the bore 3S of the coupling driving mem
ber 19 and the axially aligned bore 48 in the impeller
disposed weil or socket extending into the cavity 64 and
in which socket or well the sprinkler head assembly 67
is mounted for rotation and axial movement.
The'sprinkler head assembly 67 includes a nozzle com
ponent 68 having an annular flange 69 rotatively bear
ing on the inner surface of the wall 65 and also having
an axially disposed, internally threaded depending cir
cular wall in which the threaded upper end of the hollow
cylindrical nozzle inlet member 70 is secured. Disposed
on the upper surface of the flange 66 and secured there
on by a’snap ring 'I1 disposed in a groove 72 in the wall
65 is a sealing gasket ring 73, the .inner diameter of
which is slightly less than the diameter of the hole formed
30 by the flange 66 and which gasket engages the outer
tatingly engaging a guiding bore 56 in the end plate 9
surface of the nozzle inlet member 7i) to combine with
and similarly engaging an axially aligned guiding bore
the engagement of the flange 69 with the wall 65 to allow
51 in the sprinkler `driving member 29. Immediately
both rotation and axial movement of the nozzle assem
below the bore 51, the member y49 is provided with an
bly. The inlet member 70 is provided with .an annular
externally threaded portion 52 engaging the thread-s of aY
iiange 74 which is disposed below the flange 66 `and is
counterbore 53 in the driving mem-ber 29. The impeller
elîective to limit the extent of upward movement of the
43 is disposed within a cavity 54 defined by the end
nozzle assembly, and the nozzle component 63 is pro
plates 9 and 15 and the inner wall surface of the body 1.
vided at its outer end with acircular ñange 75 of slightly
The impeller in addition to the hub 42 thereof includes
greater diameter than the interior of the well or socket
4a bottom web portion 55 terminating in an upturned 40 Íormed by the wall 65 and adapted to engage the outer
skirt portion 56 of lesser vdiameter than the diametral
end face of the end cap 61 to limit the extent of down
hub 42 is the vertically extending adjusting screw mem
lber 49; said member at its lower ends slidingly and ro
dimension defining the inner ends of the jet producing
ward movement of the said nozzle assembly. Y
slits or nozzles 10. Projecting radially from the outer
surface of the impeller skirt .portion 56 is a plurality
01"; radially extending bl-ades or vanes 57 having impact
provided 'with an axial bore 76 in which the upper end
receiving surfaces disposed substantially at right angles
received; said upper end having a diametral slot 78 ex
to the 'direction of jets received through the slits 10,
whereby, rotation is imparted to the impeller. VThe ad
justing member 49 below the impeller webI `55’ is pro
Below the flange 74 thereof, the inlet member ’70 is
77 of the sprinkler nozzle driving member 29 is slidingly
tending thereacross nearly to the harige 34 thereof and
the lower end of the nozzle inlet member being pro
vide-d with a pair of radially opposite pins 79, 79 slid
vided with an annular flange 58 on'which the unit com 50 ingly enga-ged in said slot at opposite sides of the bore
prising the impeller 43 and the coupling driving member
in which the adjusting screw member 49 is received as
19 is supported whereby rotation of the member 49 in
best shown in FIGS. 3, 7 and 8. Between the ilange
one direction or the other will increase or decrease the
74 and the plane of the pins 79, 79 the wall of the
vertical elevation of that unit with incident variation of
inlet member 70 is provided with a plurality of upward
the clearance between Vthe fluid coupling components and 55 ly inclined, circumferentially spaced ports 89 affording
consequent increase or decrease in the slip between said
communication between the cavity 64 and the interior
components. The adjusting member 49 at its lower end
of the sprinkler head assembly 67 and the nozzle com
is provided with an axial bore 59 terminating in crossbores
ponent 68 thereof is correspondingly provided with at
60 within the counterbore 39.
least one upwardly and -radially outward extending, in
Water under pressure entering through Vthe pipe P 60 ternally .threaded nozzle receiving bore 81 in which a
will pass through the slits 1G as jets which impinge on
nozzle 82 having la desired internal diameter'is remov
the impeller blades 57 causing the impeller 43 and the
ably mounted; said bore and nozzle communicating with
fluid coupling driving component 19 to rotate as a unit.
Water will have entered the fluid coupling cavity >18
through the> bore 59‘and the adjusting screw 49, the
the interior of the nozzle assembly.
In repose, lthe nozzle assembly will -be retracted with
-the under :side of the iiange 7S resting on the top of the
erossbore 60 and the space formed by the counterbore
end Vcap 61.
39 to ñll that cavity, wherefore, the rotation of- said
ing through the cavity 54 and rotating the impeller 43
When 1l> > device is- actuated, water pass
`driving component will cause the water in the cavity to
will thence pass through the passages 13 to the cavity
impart rotation to the driven component 2l) and theV
64 and will «force the nozzle assembly upwardly to the
sprinkler `driving member 29 which Vis rigidly iixed to the 70 extent permitted by Ithe ñange 74; it being understood
driven component 20. Obviously, rotation of the ad
that as the impeller picks up speed, the iiuid coupling
justing ScrewV 49 relative to the sprinkler driving mem
means will have simultaneously caused the nozzle assem
rber 29 will elîect axial movement of the yfluid coupling
bly to -begin to rotate ‘by reasonof the interengagement
driving component 19 toward or away> from the driven
of the pins 79, '79 with the slotV 78; said engagement
component 20 with resultant lesser or greater slipbe 75 permitting the said upward movement of the nozzle as
3,090,563
5
6
sembly. At the same time, the water enters the ports
80, and passing through the interior of the nozzle as
sembly, is discharged from .the nozzle 82. At this point,
cavity side wall is generated and is disposed adjacent
it is Well to note that if for any reason or purpose, rota
tion of the nozzle assembly is prevented, no damage will
result to the rotation producing mechanism since the iiow
of water lay-passes the cavity 18 at all .times 'and merely
keeps it ñlled through the bore 59 and crossbores 60.
The nozzle component 67 is provided with an axial
bore 83 through which the body of an adjustment operat 10
ing member S4 is received for rotation; the outer end of
said bore being provided with a counterbore 85 in which
the enlarged head 36 of the member 84 is received. T-he
head 86 is provided at its outer end with ya screwdriver
slot 87 and is further provided with a peripheral groove
carrying an »O-ring gasket 88 engaging the counterbore
wall. A snap ring 89 seated in a .groove 9d in the wall
of the conu-terbore secures the member 84 in the bore
83 and counterbore 85. Within the interior of the nozzle
one
said
tion
said
of the end walls deñning said cavity and in which
driven component is separately mounted for rota
about an axis also substantially coincident with
axial line and adjacent the other of said end walls
deiining said cavity.
4. A rotary sprinkler as claimed in claim l in which
said hollow body includes fluid conducting passage means
effective to conduct water from said power means to
said nozzle means.
5. A rotary sprinkler as claimed in claim 1 including
means accessible from the exterior of said hollow body
manually operable to vary the rate of rotation of said
nozzle means for a given volume and pressure of water
entering said hollow body through said inlet means.
6. A rotary sprinkler as claimed in claim l in which
said power means comprises a second cavity in said hol
low body and enclosing a rotor mounted thereinfor rota
tion; said rotor having a plurality of radially extending
assembly, the member 84 is provided vw'th a diametral 20 varies, in which `a wall »of said cavity is disposed ad
slot 91 in which the -ñattened upper end 92. of the ad
jacent to said inlet means 'and is provided with a plurality
justing screw member 49 is loosely received, the said
of angular slits positioned to a plur-ality of jets of water
engagement permitting extension and retraction of the
against said vanes in a direction to cause rotation of
nozzle assembly so that .the clearance between the ñuid
said rotor.
coupling driving and driven components 19 and 2.0 can 25
7. A rotary sprinkler as claimed in claim 1 in which
be varied by rotation of the member 49 as actuated by
said hollow body is provided with an end cap at one end
the member 84 in all vertical positions of the nozzle as
carrying ysaid inlet means, yand with a second end cap at
sembly. The frictional engagement of the O-ring 88
its opposite end in which said nozzle means is mounted
and the snap ring 89 with the member 84 are suiiicient
yfor rotation and endwise movement.
to hold it in any position of rotative adjustment.
8. A rotary sprinkler as claimed in claim 2 in which
30
While in the foregoing specification »there has been
said hollow body is -generally cylindrical, in which said
disclosed a presently preferred embodiment of the in
iluid coupling cavity is substantially coaxially aligned with
vention, the invention is not to be deemed to be limited
the axial line of said hollow body, and in which said power
to the precise details of construction thus disclosed by
means is disposed -in a second cavity in said hollow body
way of example, and it will be understood that the inven 35 parallel «to said first cavity and at the side thereof adja
tion includes as well all such changes and modiiications
cent said inlet means.
in the parts and in the construction, combination and ar
9. A rotary sprinkler as claimed in claim 3 in which
rangement of parts as shall come within the purview of
said hollow body lis generally cylindrical, in which a ñrst
the appended claims.
end cap closes one end thereof and carries said inlet
I claim:
40 means, and in which Ia second end cap closes the other
1. In a rotary irrigating sprinkler, a hollow body hav
end of said hollow body and carries said nozzle means
ing inlet means añording connection of the interior of
mounted thereon -for both rotation and axial movement.
said body with a source of water under pressure, a rotary
10. A rotary sprinkler as claimed in claim 3 in which
fluid -coupling means in said body comprising a rotatable
ya screw means accessible from an cuter surface of said
driving component, a rotary driven component and means 45 nozzle means is manually operable to vary the axial clear
comprising devices adapted «to employ water received
from said inlet means for converting rotation of said
driving component into rotation of said driven compo
nent, power means in said body operative to convert the
ance between said duid coupling components with result
ant variation in the slip permitted between said compo
nents.
11. A rotary sprinkler as claimed in claim 4 in which
force exerted by water entering said body from the source 50 said hollow body yincludes a plurality of fluid conducting
to which the sprinkler is connected into rotation of said
passages extending outwardly of and parallel to the circu
ñuid coupling driving component with resultant applica
lar side wall of said -fluid coupling cavity eiîective to con
tion of rotative driving force to said driven component
duct water from said power means to said nozzle means.
of said lluid coupling, a rotatable discharge nozzle means
12. A ro-tary sprinkler as claimed in claim 5 in which
mounted on said hollow body and connected to said 55 said manually operable means for varying the rate of
fluid coupling «driven component for rotation deriving
rotation of said nozzle means is disposed axially of the
from rotation of said fluid coupling driven component,
driven component of said duid coupling and has threaded
and means in said hollow body effective to conduct water
engagement wtih a member ñxed to said driven compo
from said power means to said nozzle means in all posi
nent.
tions of rotation of both of said power means and of 60
said nozzle means.
References Cited in the tile of this patent
2. A rotary sprinkler as claimed in claim 1 in which
said fluid coupling means is enclosed within a cavity
formed within said hollow body and in which fluid pas
sage means extending Írom said cavity to a point in com 65
munication with said inlet means serves to maintain said
cavity iilled with water.
3. A rotary sprinkler as claimed in claim 1 in which
said hollow body includes a cavity deñned by a circula-r
side wall and spaced, parallel end walls in which said 70
fluid coupling means is housed, in which said driving
.component is mounted for rotation about an axis substan
tially coincident with the axial line about which said
UNITED STATES PATENTS
1,125,593
1,888,8811
11,970,1262,756,099
Pinckney ____________ __ Jan.
Murphy ____________ __ Nov.
Buckner ____________ __ Aug.
Reynolds ____________ __ July
i19,
22,
14,
24,
19115
1932
1934
1956
2,909,325
3,038,666
Hunter ______________ __ Oct. 201, 1959
Dudley et al ___________ __ June 12, 1962
141,198
Australia ____________ __ May 11‘1, 1951
FOREIGN PATENTS
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