US2421551A - Sprinkler head - Google Patents

Description

June 3, 1947.

D. F. DUNHAM SPRINKLER HEAD Filed oct. 13,'.1944

end thereof above member 4 for holding the impulse member in operative position.

Member 3 also has a radial extension I3 which is adapted to support the regulator in oscillatable position on the upper side thereof as by means of a pin I9 extended through extension I8 and held by means of a bushing 20 press fitted into a counterbore of said extension (See Fig. 3). Impulse member 4 has diametrically disposed arms 4a and 4b which have, respectively, a downwardly slanting vane 2| and a depending boss 22, vane 2| being movably disposed relative to the nozzle I4 and boss 22 being movable over and relative to regulator 5. Arm `lla of impulse member 4 also has a pair of laterally inclined wings 4c and 4d (Fig. 2) which flare outwardly and incline downwardly to a uniform extent on opposite sides of vane 2|. Thus, regardless of whether the vane 2| is positioned centrally or to one or the other side of the center of the nozzle I4, the force of the water jet fromz said nozzle when directed against the lower surfaces of the inclined wings will tend to correspondingly move the impulse member ,in opposite directions to a predetermined extent and the head 3 in a given direction until its movement is stopped by one of the limiting elements 6 or under the control, however, of the regulator 5.

When the impulse member il and the head 3 have progressed in a given direction, in a stepby-step movement as later explained, together about the axis of the body I and throughout the extent of a predetermined arc, the element 6 or as the case may be, is engaged by a, rod 23 which depends from the center of one edge of the regulator 5 whereupon rotative movement of the member 3 and the impulse member Il in one direction is stopped and successive swinging movements of the impulse member which are occasioned by the force of water against the opposed wing [Ic or 4d and vane 2| occasions the reverse movement of the member 3 and impulse member 4 in the manner I will now explain.

Member 5 is at all times free to swing in one or the other direction on its axis I9 and it includes a flat plate 24 with upstanding pins 25 and 25a adjacent its extremities and of such height as to engage and limit the movement of impulse member 4 to a predetermined arc whereby the wings @c and 4d are alternately under the influence of the water jet. Also member 5 has a pair of shorter upstanding pins 26 and 26a inwardly of pins 25 and 25a, respectively, adapted to engage the peripheral surface of the depending portion 22 at times. The outermost portion of the periphery of portion 22 of the impulse member is cut away as at 2l so that when the regulator is in alternate positions relative to the member 4 the portion 22 may swing free of pin 26 or 26a, as the case may be.

The extent of rotation of members 3, II and 5 about the axis of stationary fixture I, in any direction, may be limited by the stop elements 6 and 'I carried on the stationary xture I. Said elements 5 and I have one or more turns, as at 6a and 1a, tightly-wound around the portion 9 of fixture I so as to be frictionally held in adjusted positions thereon and radially extended portions 6b and 1b, respectively, projected into the path of the depending rod 23 from member 5. Thus, the portions b and Ib may be turned to a desired extent around the xture I for limiting the swinging of the members 3, 4 and 5 to a. desired extent, even to the extent, when portions 6b and 'Ib are close together or superposed, of permitting the oscillations of the head to an operable extent of 360 degrees for the purpose of sprinkling a large area of a lawn.

Thus, from the foregoing description and the illustration of my sprinkler head in the drawing it will be apparent that there are three separate cooperating movements of the head and the elements which adapt the device for adequately sprinkling water over an expanse of lawn. Such movements may be dened as follows: rst, the natural spread of a stream of water issuing from the jet or nozzle Ill; second, the sweep of the impulse member 4 which diffuses the water over a restricted area; and third', the progressive movement of the head circularly about the axis of the stationary iixture within the range of a predetermined arc, depending upon the adjustment of the limiting elements 6 and Due to the force of the stream of water issuing from the nozzle Hl the vane 2| will be moved to one or the other side of the nozzle and in the absence of the wings 4Ic and 4d, unless otherwise actuated, could not swing in a reverse direction.

The regulator 5 serves to limit the swinging of the vane 2| and the wings 4c and 4d to extremes of movement always within the influence of the water jet and, due to the angularity and disposition of the wings, the force of .the water stream is directed against one of the wings so as to eiect a return stroke of the impulse member in the direction of the then operative wing, after which movement the impulse member is moved to an opposite extreme and the other wing is effective for occasioning a reverse stroke.

The regulator 5 with its upstanding pins 25 and 25a and pins 25 and 26a thereon limits the sweep of the impulse member 4, and at the same time the impact of said impulse member with pins 26 and 26a, or either of them, gradually and progressively swings the head 3 on its pivot il! in a stepby-step movement until stopped by engagement of rod 23 with limiting element 6 or Successive impacts of the impulse member with the pins 25 and 25a, as the case may be, tend to rotate the water jet member 3 in one or the other direction to an extent permitted by the adjustment of the limiting elements 6 or 'I. For instance, as shown in Fig. 4, when rod 23 of regulator 5 engages limiting element 'Ib the head will have rotated on member as far as possible in a clockwise direction and it will now begin a, counter-clockwise movement in the direction of its other extreme of movement as deiined by the position of the limiting element Bb. At such point in the operation of the device, it will be remembered that the member i is still oscillating and the successive impacts of the portion 22 on pin 26 will gradually swing the head in a counter-clockwise direction, as shown in Fig. 5, toran opposite extreme of movement, during which time, of course the members 3 and 4 have been moved progressively, in a step-by-step movement about the axis of stationary fixture and such progress of member 3 will continue until again stopped by engagement of rod 23 with the limiting element Bb, at which time a reverse movement of the member 3 will ensue.

After the iirst impact of the stream of water on vane 2| has caused the head to knock the regulator 5 into a position in which one pair of pins 25, 26 or 25a, 26a is located closer to the axis of rotation of the head than the other pair of pins, the rotation of the head in a step-by-step manner is caused by the impact of the depending portion 22 to greater force against the pin 26 1 olf-1:26a nearer the axis :than-against *the* pin "or2f5a 'struckon the reversestroke. When the movement of the head in each"-siv`i1igis"arre`sted by'thei impact 'ofi thel ide'perdingimember 22 lwith a-'pin,}the -iorce lof 'the-'water against the upward and inwardly sloping vane defied-arY is sufficienti-'to start theI head-svvinging-in the -`opposite Ldirection and *bring vthe :vertical `vane 4into the :streamof water and past' the center' line thereof, Whereupon; the extra f force "oft the Water'laoting on `tl'ie vertical'yane 'on-"one '-side'vvill acoelerateimovement of YAthe "head" in' the"direction'inwhich iifis alreadymoving until' thei idownwardsl'ope" of the vane Ufollc'ivt'fin'g will cause"the mo'vemerfit "to *be slowedldownjbut toalesser"degre"e on' the shorter l 'swing 'than on fthe longer-swing. AThe f foro'e of theiimpa'ct-of'theid'epending part`f22on a'pinis therefore greater at" lonerendof theswing "of the head"3v than'fat' the 'other resulting intu'rning'the head ina series `of jerks in'one direction until rod 2'3"strikes the'stOp''lbA or 1b. 'Since"the"re`g'ulator 5 in `its loperative position 'carries the ro'd A23 slightlyaheadof the 'pivotal i point of the regulator, 4engagement"of the-rodwith the'stop will swing the `regulator "in the' opposite rdirection 'so that the-opposite .pair'of pinsfvi'ill'be brought nearer the *axis of rotationl of th`elie'ad 'resulting in the reverse movement of* the 'head "3 until* the otherstopisstruck 'bythe'rdd 23.

fIt should be distinctly Aunderstood that `tlJ'e operation o'f the limpulse "member oontir'iue's "as longas wateriisissuedfrom the'noz'zle f4 and regardiess` of'the relative position -o iithe member 3`With regardto stationaryxture 'I When'the rotative movementof 'member'l is stopped ""by i engagement of the rod `'23 -vvithoneof the limiting elements'orT, the force of the Water'is"exert'ed clothe-member 4, through Wings 4c"an:lld,"to return Asaid 'member d 'to' an opposite'extremeof movement. This is i occasioned by 4the fact that the force which `is "applied to vane 2l "and 'the Wing lloor "4'd,'as"the casem'aybe, then'is applied to said vane and *an opposite Wingf'or reverselymoving the same.

A"Itinay" be noted that inimy 'sprinklerfh'eadthe impulse 4member '4 is mounted l"coaxially with membersll an'd3 While the 'regulator `ismoiinted on an axis orf-set from vthe axis "of "the limpulse member 4 and member.

'-Hen'ca it may be understood thatasihereindisl'os'ed Ilhave provided a'rotative'sprinklerihead embodying a stationary xtur'e attachabletoa Water "service pipe, (a Water "nozzle rotatable thereon, adjustable `mea`ns for 'limiting "theeifective arc'o'f said nozzle, 'an impuls'emembervrotatalle on as Well aswith saidnozz'le'aid h'avr'ig means-disposedadjacent the nozzle vadapted `t`o be 'influenced by' a stream of' water issuirigtherefrom for alternately 'movin'g'theimpul'se member in opposite directions, and a regulator cooperating with Ysaid impulse `member for limiting the sweep of the impulse member during the rotation of s'aidmemberlaboutthe a-xisofthesupporting fixture. y

I claim:

1. A rotary sprinkler comprising: a stationary fixture arranged for connection with a source'o'f waterfsupplyya'nozzle rotatable thereon, animpuls'e 'member rotatable Vboth on 'and with "said nozzle and having means disposed adjacent said nozzle and under the inuence of the stream of Water issuable from said nozzle including a central vane and inclined wings outwardly of opposite sides of said vane for oscillating the impulse member so as to direct the stream of water over a predetermined area, -`and cooperating means on said ztureand" associated with "said impulse vine-moer -for f limiting the movement of the nozzle the "impulse i member together in the opposite directions *and to a predetermined extent. 2. a rotary spr-initier comprising: y-a stationary iixtufe' fjiioiiowA cross section adapted for conneoti'onj"vv'ithl a source of water supplyfa headrotatable thereon-rand provid-ed With'ca radially" disposed Water jetyandanimpulse-member oscillatably mounted on said head andformedwith a *Verticallyf disposed varieand laterally inclin'ed wingsfextendingfrom oppositesidesfof said vane and bent"dovvnvvar`dly"at their extremities; Said impulse member* being "bodily 'oscillatalole to permit the"'sit/'ingingl "of `s'aid vaneand Wings "to l"arid frorelative-toisaid'vvater jet `dueito theirfluerice of 'a 'singlestream-of 'Water'issuable from "said let.

'3. rotary `sprinkler Aas 'characterized inelaim 2 including: "a regulatorpivotally 'carried on said head anidha'ving' anaxis parallelin'g that 'of the impulse member and'havin'g'portionsdisposed in thepath of 'a'portion of the' mpulseme'mber for limitingithesweep ofrfthe impulse member" during the rotation of the impulse member "and headrelative t'o the support.

4. A rotary sprinkler as characterized inolaim 2 including:"aregulator pivotallyearried `on said headari'd'h'avinglan'axis'oieset from that of the impulse member 'an'dliaving'-v portions 'disposed in the4 pathY ofaportion 'of "the impulsemember' :for limiting mesure-ep f 'the impulsememberduririg the rotati'onof the impulse" member 'and headrelative'to the 'supporta `pair of vlimiting 'lements adjustable rotatively v"on said "stationary support, and means carriedbysaid regulator"`for engagement'altei'n`ately Withsai'd pair 'of limiting "elemerits' for arresting'the "rotati've' moveme'nt'fof the impulse"mei'nberl and jet'at theextr'emes of kpredetermined arcsbf movement.

5. 'Airotary' sprinkler "comprising: "a iiiture 'attaliabl'e to a "sourde 'of "Water "supply, a head rotatable "there'on'an'd provided'vvith `a Water jet, an *impulsememb'er "ooaXially mounted von 'said heaiiabove said 'jet zfor 'common rotation with theiiead ons'aid 'xtuife' andindepeiidentiy oscillatable on 'said head, 'and 'a Vregulator pivotally carried by said Head and osciu'atable fon axis iadiallyspaoed from and paraileiirig 4'the axis' of the elfiead and'liaving spaced elements disposed in "the path of the "impulse "member for limiting the' movement'of the impulse 'member in 'opposite direotiohs, 'said'im'pulse member having "a varie dSlSd e'gWSe aljace'n't the Walter `jt and soleiyunidertnein'iiuenee of a stream of "Water issuable fro'm said jet 6. Arotary`spri'nklercompriein'g: a ature attaehable to "a 'source of 'Water "supply, a head rtatabletlereon and providedvvitha Water jet, an impulse member coaxially mounted 'on 'Said heaf'r c''nlnon rotation Withthe'hea'd n's'aid natur-e and independently osciuatabie on said headpandaregulator pivotally 'carried by'said headarido'soillatable'onan aids olT-set'from the axis yoftheheaii Aand*havingspacedeieriieiits disposed i'n 'the rpath of "the impulse member I'for limiting 'the movement 'of v the impulse Amember in opposite directions, said impulse member having a vane disposed edgevvise adjacent the Water jet and solely under the inuence of a stream of Water issuable from said jet, and laterally disposed inclined wings extended from opposite sides of said vane against which the water from said jet impinges so as to alternately move the impulse member in diierent directions.

7. A rotary sprinkler as characterized in claim including: a pair of frictionally adjustable limiting elements carried by said xture for arresting the rotative movement of the head and impulse member at predetermined points, and means carried by said regulator alternately engageable with said pair of limiting elements, said impulse member being arranged for continuous oscillation regardless of the stoppage or the rotative movement of the head.

8. A rotary sprinkler comprising: a stationary fixture adapted for connection with a source of water supply, a head freely rotatable within predetermined limits on said fixture and having a radially extended nozzle from which a stream of water is issuable during the rotation of the head, an impulse member coaxially mounted on said head for oscillation within predetermined limits and also rotatable with said head, said impulse member having a central vane and wings laterally inclined therefrom which are together movable in an arc adjacent said nozzle and under the influence of a jet of water issuable from said nozzle, for providing a forward and backward sweep of the stream of water during the progressive rotative movement of the nozzle and stream about the axis of said fixture,

9. A rotary sprinkler as characterized in claim 8 including: a regulator having an axis oli-set from but paralleling the axis of the head and provided with spaced elements disposed in the path of a portion of the impulse member for limiting the oscillation of the impulse member.

10. A rotary sprinkler as characterized in claim 8 including: means adjustably carried by said iixture for arresting the rotative movement of the impulse member and head, and means carried by the regulator and engageable with said arresting means, whereby at the completion of a movement of the impulse member and head in a given direction a reverse movement will be instituted.

11. A rotary sprinkler comprising: a supporting fixture adapted for connection with a source of water supply, a head rotatable on said fixture, a nozzle on said head, an impulse member coaxially mounted on said head for oscillation in an arc of less extent than that of the head and including a diametrically disposed bar having a vane and a pair of oppositely inclined wings at one end thereof, a regulator oscillatably mounted on said head in a position off-set from the impulse member and having spaced stop devices extended upwardly therefrom and engageable with the rear end of said impulse member for arresting the oscillative movement of the impulse member alternately in opposite directions, the vane and wings of the impulse member being movable relative to the nozzle solely under the influence of a single stream of water issuable from the nozzle,

12. A rotary sprinkler as characterized in claim 11 including: means carried by said head and by said fixture cooperatively arranged for arresting the rotative movement of the head and the impulse member at opposite extremes of their rotative arc, said last mentioned arresting means including rotatably adjustable elements carried by the xture and an element carried by and depending from said regulator and engageable with the rotatable elements.

13. A sprinkler comprising: a xture attachable to a water service pipe, a head rotatable thereon and having a vertical passage therein for the passage of water therethrough, an impulse member rotatable both with and independently of the head on an axis coaxial with that of the head, a jet nozzle in communication with said vertical passage, a regulator pivotally mounted on a. vertical axis at a point diametrically opposite the nozzle and provided with spaced upstanding stops disposed in the path of a rear portion of the impulse member for limiting the movement of the impulse member in opposite directions relative to the head, said impulse member having a forward extension formed with a vane disposed adjacent the nozzle and laterally inclined wings on opposite sides of said vane, whereby a jet of water issuing from said nozzle will impinge on land inuence the rotation Amovement of the impulse member on the head to an extent permitted by said stops and successive impacts between the rear portion of the impulse member and stops alternately will occasion rotative movement of the head on the xture and thus spread the water over a predetermined area.

14. A sprinkler comprising: a fixture attachable to a water service pipe, a head rotatable thereon and having a vertical passage therein for the passage of water therethrough, an impulse member rotatable both with and independently of the head on an axis coaxial with that of the head, a jet nozzle in communication with said vertical passage, a regulator pivotally mounted on a vertical axis at a point diametrically opposite the nozzle and provided with spaced upstanding stops disposed in the path of a rear portion of the impulse member for limiting the movement of the impulse member in opposite directions relative to the head, said impulse member having a forward extension formed with a vane disposed adjacent the nozzle and laterally inclined wings on opposite sides of said vane, whereby a jet of Water issuing from said nozzle will impinge on andinfluence the rotation movement of the impulse member on the head to an extent permitted by said stops and successive impacts between the rear portion of the impulse member and stops alternately will occasion rotative movement of the head on the fixture and thus spread the Water over a predetermined area, a pair of stops carried by the xture which are separately adjustable rotatably about the common axis of thehead and impulse member, and a member depending from said regulator to a position of engagement with said last mentioned stops for limiting the rotative movement of the head.

DELBERT F. DUNHAM.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 2,309,782 on Feb. 2,1943 1,710,107 Orr Apr. 23,1929

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