US3794064A - Counterweighted tower irrigator - Google Patents

Counterweighted tower irrigator Download PDF

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Publication number
US3794064A
US3794064A US00268100A US3794064DA US3794064A US 3794064 A US3794064 A US 3794064A US 00268100 A US00268100 A US 00268100A US 3794064D A US3794064D A US 3794064DA US 3794064 A US3794064 A US 3794064A
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United States
Prior art keywords
counterweight
column
truss
arm assembly
end portion
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Expired - Lifetime
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US00268100A
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English (en)
Inventor
S Newell
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Alco Industries Inc
Ikon Office Solutions Inc
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Ikon Office Solutions Inc
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Assigned to ALCO INDUSTRIES, INC. reassignment ALCO INDUSTRIES, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ALCO STANDARD CORPORATION AN OH CORP
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G25/00—Watering gardens, fields, sports grounds or the like
    • A01G25/09—Watering arrangements making use of movable installations on wheels or the like
    • A01G25/092—Watering arrangements making use of movable installations on wheels or the like movable around a pivot centre

Definitions

  • a rotatable irrigating apparatus for dispensing water or other liquids over a large crop area has a central column or turret from which a sectioned pipe member carrying a liquid dispensing truss arm assembly extends radially outwardly for covering a large crop area or acreage during a 360 rotation thereof.
  • the weight of the arm assembly is substantially balanced by an aligned, oppositely positioned and radially extending, relatively shorter length, sectioned counterweight truss that represents a non-spraying frame structure.
  • the arm assembly as well as the counterweight assembly are connected at spaced intervals along their upper reaches by opposed tension gravity cables to a top or surmounting end portion of the column and are connected at more closely spaced intervals along their sides by tension wind cables to a cross-extending support arm that is carried by a lower end portion of the column or turret.
  • the upper end portion of the column has a relatively rotatably mounted anchor collar that is connected by guy or anchor cables to stationary ground anchor or tieing means.
  • Another object has been to devise an improved, rotating, overhead, liquid dispensing apparatus which will be fully stable under various operating conditions, although utilizing only one outwardly projecting spray arm assembly.
  • a further object of the invention has been to devise a counterweighted rotating irrigating apparatus that is relatively simple to assemble and disassemble, that is relatively inexpensive in cost, and that has a truss construction with tension-stressed members and counter balancing means such that substantially full stability is obtained in its mounting and utilization.
  • a still further object has been to provide a relatively simple, inexpensive and fully stable, rotational, irrigating device that is capable of covering a large or maximized ground crop area.
  • FIG. 1 is a greatly reduced somewhat diagrammatic top plan view showing the utilization and field of coverage of a rotating tower operated overhead irrigating apparatus of the inventive construction.
  • FIG. 2 is an elevational view on the scale of and taken along the diagonal line 11-11 of FIG. 1; in this view, the tower has been rotated to align a liquid dispensing arm assembly with ground anchor cable means.
  • FIG. 3 is an enlarged top plan view showing details of the construction of a top end portion of a central mast, tower or column of the apparatus construction, and particularly illustrating a ring or collar mounting for ground anchor cables.
  • FIG.'4 is a fragmental elevation in partial section on the scale of and taken along the line IVIV of FIG. 3.
  • FIG. 5 is a plan view of a construction embodying the invention, particularly illustrating opposed, sideextending,wind-resisting tension cable means cooperating with a bottom-positioned cruciform support frame of the central column and connected to opposite sides of a radially outwardly extending liquid dispensing truss arm assembly of coupled pipe members and to opposite end portions of a counterweight truss frame.
  • FIG. 6 is a side elevation on the scale of and of the structure of FIG. 5 with the wind cable means omitted and showing gravity-resisting tension cable means and ground anchor cable means that is connected to the top of the central column.
  • FIG. 7 is a fragmental plan view on an enlarged scale with respect to FIGS. 5 and 6, particularly illustrating the sectioned construction and the end mounting of a liquid dispensing truss arm assembly which is shown in the form of an outrigger truss.
  • FIG. 8 is a fragmental view in elevation on the scale of and of the structure of FIG. 7, and particularly illustrating wheel and actuating means for rotating the structure about a circular, stationary base, platform or track.
  • FIG. 9 is an enlarged end section in elevation taken along line IX--IX of FIG. 7.
  • FIG. 10 is a top plan view on a reduced scale with respect to FIGS. 7 and 8, partially broken-off at its opposite ends, and particularly illustrating the central construction of the truss structure and the opposed in-line, horizontally, radially outwardly extending mounting of the counterweight truss with respect to the liquid dispensing truss arm assembly.
  • FIG. 11 is a side elevation on the scale of and of the structure of FIG. 10.
  • FIG. 12 is an enlarged view in elevation showing the construction of a typical section of the liquid dispensing truss arm assembly.
  • FIG. 13 is a bottom plan view on the scale of and of the section shown in FIG. 12.
  • FIG. 14 is an enlarged end section in elevation taken along the line XIV-XIV of FIG. 12.
  • FIG. 15 is a side elevation of a section of the counterweight truss on the same scale as FIGS. 12 and 13.
  • FIG. 16 is an end view on the scale of and of the section of FIG. 15; it will be noted that the truss sections in FIGS. 15 and 16 are shown turned 45 to illustrate their angular mounting on the central column, see also FIGS. 17 and 18.
  • FIG. 17 is a section on the scale of and taken along the line XVII-XVII of FIG. 15.
  • FIG 18 is an end view in elevation on the scale of FIGS. to 17 showing the mounting of the last or outermost counterweight truss section with respect to an end-positioned counterweight box.
  • FIG. 19 is a side view in elevation on the scale of FIG. 18 and showing the counterweight box of such figure.
  • FIG. 20 is an enlarged fragmental section in elevation illustrating the construction of the lower end portion of the column, turret or tower structure shown in FIG. 6.
  • FIG. 21 is a horizontal section on the scale of and taken along the line XXIXXI of FIG. 20.
  • FIG. 22 is a horizontal section on the scale of and taken along the line XXII-XXII of FIG. 20.
  • FIG. 23 is a lower horizontal section on the scale of and taken along the line XXIII-XXIII of FIG. 20.
  • the apparatus or device of the present invention illustrated in the drawings has a mast, tower or column that carries a single irrigating spray boom, outrigger turss or arm assembly that extends radially outwardly and whose weight is compensated by an endwisealigned and opposed, relatively short length truss structure or frame provided with counterweight means.
  • the counterweight means may utilize heavy metal, stone, concrete blocks or cement, but will have an open container 65 to carry any suitable weight means.
  • the container 65 is preferably filled with easily available water. This simplifies handling of the equipment sections, in that the water may be drained from the tank when the sections of the apparatus are being moved into the field for assembly or are being disassembled for moving to a new location or to a protected area during winter months.
  • D represents a relatively short length, opposed, inline, radially outwardly extending, supporting arm means, counterweight truss or frame which carries the counterweight means.
  • E represents a cruciform-shaped support frame carried by and secured for rotation with a lower end portion of the column A.
  • F represents a first tension cable means which is connected between opposite sides of the spray arm assembly C and between opposite sides of the counterweight truss D and oppositely extending end portions of a transversely extending cross arm assembly 101 of the support frame E; and G represents second or gravity tension cable means which is shown connected at wider spaced intervals than the cable means F between the upper side of the spray arm assembly C and between the upper side of the counterweight truss D and a top ring 10 that is secured to the column A.
  • Tie-down ground anchor cable means is represented by H, and a turret operating or actuating mechanism for rotational movement on the base B is designated as I.
  • truss sections of the spray arm assembly C are of triangular shape and each utilizes a pipe member length 30 as a basic member.
  • Endwiseconnected sections of the counterweight truss D are of tilted rectangular shape.
  • Both the spray arm assemby C and the truss D are connected at their inner ends to a shorter length, endwise-in-line, crossextending support arm means of the support frame structure E that is carried by the lower end portion of the column A.
  • apparatus of the invention can be employed to cover a wide circular field of application, utilizing a relatively low profile.
  • the apparatus will be power-actuated or rotated on the platform or base B by a mechanism l similar to that described in the specification and disclosed in FIGS. 2, 13 to 18, inclusive, and 23 of the Delong and Newell U. S. Pat. No. 3,647,139 of Mar. 7, 1972.
  • a tubular or a truss type of main tower or column may be provided for the counterweighted unit or apparatus,
  • the hollow rotatable turret, column or mast A is shown of substantially circular section and as provided at its upper end with a pair of rings or plates 10 and 15.
  • the lower ring or plate 10 is shown securely mounted, as by weld metal w, on an upwardly extending stub shaft 12 that is secured by weld metal w to extend from the bore of the column A.
  • the lower plate or ring 10 has a group of circumferentially positioned or mounted closed eyelets, loops or ring lugs 11 secured thereto by weld metal w to extend outwardlytherefrom and having a bore or eye portions 11a to provide receiving connectors for the gravity cable means G. It will thus be apparent that connecting loops of the cable means G will hold the spray arm assembly C and the counterweight truss D on a substantially horizontal, longitudinally extending, in-line relationship adjacent the lower end of the column A. See FIG. 6.
  • an upper plate or ring 15 is provided for connecting upper ends of the anchor cable means H in a relative rotatable relation with respect to the uppermost end of the stub shaft 12.
  • the upper ring 15 is rotatably mounted on the stub shaft 12 by means of a sleeve bearing 16 and a thrust bearing 17, and is retained in an operating position thereon by a cross-extending cotter pin 19.
  • the upper ring 15 also has quadrant-positioned eyelets, loops or ring lugs 18 that are secured by weld metal w to extend therefrom, see also FIG. 3, for receiving the upper loop ends of the anchor cable means H.
  • the outer-lower ends of the anchor cable means H may be secured by loops to ground-embedded piers or anchors 20 of concrete or other suitable construction by means of forwardly extending eyelet anchor pins 21 that are anchored within each pier 20, see particularly FIGS. 1 and 2.
  • FIGS. 7 to 9, inclusive illustrate the construction of cruciform-shaped lower support structure E that is secured to and extends horizontally from the lower portion of central column A (see FIGS. 20 and 22) and has a sidewise-projecting relatively long arm member or frame 101 and a cross-extending shorter arm member or frame 100.
  • the shorter frame 100 is in endwisealignment with the truss assembly or outrigger C and counterweight truss or frame D (see FIGS. 10 and 11).
  • the frame 100 like the frame 101, carries (see FIGS.
  • wheel and actuating means I for rotative movement on the base or platform B.
  • each end of the long frame or arm structure 101 is provided with end eyelets or U-mounts 102 for receiving ends of the wind tension cable means F.
  • each side half or portion of the arm 101 is made up of a plurality of spaced-apart cross-extending frame portions or sections that are defined by horizontal top members 106 and vertical side members 105.
  • Longitudinally extending angle-shaped members 107 are secured to the comers or each cross frame, as by weld metal, and diagonal angle pieces or members 108 extend between each cross frame portion or section for reinforcing the construction.
  • the frame or arm structure 101 serves not only as a tension tie with the liquid dispensing truss assembly C and counterweight assembly D, but also (like the frame or arm structure 100) as a rotatable support for the overall construction, including the column A.
  • the spray arm assembly C is made-up of truss sections 25 of triangular shape,with individual lengths of fluid-carrying pipe or conduit members 30 serving as the main or upper supporting member of each section.
  • Cross frames are provided at ends and spaced locations along each truss section; an angle-shaped member of steel or other suitable material provides a lower, cross-extending, horizontal connector member 26 for a pair of inclined, upwardly extending and converging side members 27 to define each cross frame.
  • the members 26 and 27 may be welded together at their corner ends and the members 27 may be secured at their upper ends by weld metal w to downwardly projecting tabs 33a of a lower half of a two-part slit clamp 33, see particularly FIG. 14.
  • each clamp 33 is adapted to extend about the pipe member 30 of each truss section 25 at a longitudinally spaced location along its length to serve as a support for an associated cross frame.
  • Each clamp 33 also has an eyelet, loop or eye lug 35 secured to project from its upper half for receiving the lower ends of the cables of the gravity tension cable means G.
  • opposite ends of the cross members 26 of each cross frame of each truss 25 are provided with eyelets, loops or eye lugs 42 to provide opposite side loops for receiving end loops of the wind cable means F.
  • the eyelets 42 are shown as having a closer spacing, represented for example by each panel portion of each truss section 25 that is provided by a pair of cross frames defined by members 26 and 27 that is closer than the longitudinal spacing shown for the cable loops or eyelets 35.
  • the spaced cross frames of each truss section 25 are connected by reinforcing diagonal members 29, and by longitudinally extending angle-shaped pieces or members 28 extending along the corners or joints defined between the members 26 and 27 of each cross frame.
  • Weld members may be employed for securing the members 28 to the inside corners of the members 26 and 27.
  • the equal longitudinal spacing between the side loops or eyelets 42 is shown as about one half the equal longitudinal spacing between the top or upper loops or eyelets 35. This enables the use of a greater or maximum number of cables for the wind tension cable means F.
  • the parts of each clamp 33 are removably secured together and about a portion of an associated pipe member length 30 by nut and bolt assemblies 34.
  • the connection between the lower corners or the inclined vertical members 27 and the horizontal member 26 of each cross frame may be reinforced by pairs of end pads that are bolted together at 41.
  • each of the pipe members 30 of the spray arm assemby C is at one end provided with a coupling housing 31 and an upwardly projecting liquid spray nozzle or head 32, and is provided at its other end with a nose coupling part which is adapted to fit within the housing part 31 of an adjacent pipe length in a fluid-sealed and coupled relation with respect thereto. See for example coupling constructions such as illustrated by Beyer US. Pat. No. 2,857,660, Frishof US. Pat. No. 2,797,937 or Rickard US. Pat. Nos. 2,916,306 or 2,962,314.
  • FIGS. 15 to 19, inclusive The construction of the counterweight truss or frame assembly D is illustrated particularly in FIGS. 15 to 19, inclusive. It may be made-up of sections of weldedtogether,- angle-shaped frame members consisting of longitudinally extending corner members 52, 54 and 55, and cross extending end and intermediate frames of rectangular shape. Endwise-connected angle-shaped members 59 of the intermediate cross-frames, unlike endwise-connected angle-shaped members 51 and 53 of the end cross-frames are not flanged (compare FIGS. 16 and 17). As shown in FIG. 16, the members 51 and 53 are flanged to receive rivets or bolt and nut assemblies 51a for securing each truss section in an endwise-aligned relation to an adjacent section.
  • Longitudinally extending, angle-shaped members 52, 54 and 55 serve as connecting corners for each cross-frame of each truss section of the truss D.
  • Cross-members 56 serve to reinforce each cross-frame (see FIGS. 16 and 17 and to cooperate with diagonal tie members 57 that extend longitudinally along each truss section 50.
  • the transverse end parts of each frame or truss section 50 are designated as 58.
  • each truss section 50 has opposite, side-extending eyelet lugs or connector loops 60 along opposite sides thereof at spaced intervals for receiving the wind cable means F, and has upwardly extending eyelet lugs or loops 61 at wider spaced intervals along the top of the structure for receiving the gravity cable means G.
  • the counterweight assembly D will preferably have the side eyelet lugs 60 at about half the spaced intervals of the upper eyelet lugs 61.
  • the extreme outer end section 50 of the counterweight truss or frame D is provided with a boxlike counterweight structure or container that may be bolted or riveted thereto.
  • a rectangular shaped forward end frame 62 is secured, as by weld metal, on the forward end of the counterweight box or container 65 and is, in turn, secured by bolt and nut assemblies or rivets 63 to an adjacent or outermost end frame of the truss D.
  • the container 65 has reinforcing frame members 66 for framing upright side wall enclosing plate members 67 and a bottom closure plate member 68 that are secured, as by weld metal, to the frame members 66 and with respect to each other to form or provide a water-tight box having an open top or mouth portion.
  • the box 65 for drainage purposes, is provided with a valve 70 which extends from a bottom portion thereof through a side plate member 67, adjacent the bottom closure plate member 68.
  • the box 65 is also shown provided with upper eyelets or lugs 72 that are secured to top members of its surrounding frame structure for receiving end loops of gravity cable means G, and with sideextending connector eyelets or lugs 71 that are secured to side members for receiving ends of the wind cable means F.
  • FIGS. to 23, inclusive are illustrative of the rotatable mounting of the column or turret A on the table or platfonn B.
  • a lower boxlike or rectangular upright mounting frame structure 75 has a heavy bottom plate 76 that is secured on the base or platform B by bolt and nut assemblies 76a, and has a heavy top closure plate or member 77 which serves as a rotatable support for the column A through the agency of a bearing plate 78 and a pair of bronze washers 83 and 84.
  • the bearing plate 78 is shown secured to the closure plate member 77 by bolts 78a and the bronze washer 83 is shown as resting thereon.
  • Conduit or pipe member 98 extends upwardly through the top closure member 17 and rotatably receives a downwardly extending spider or leg part 81 of an extension or upper frame structure 80.
  • a collar 82 at its lower end rests on the bronze washer 84 opposite the inside of the spider 81 and is rotatably carried on the vertical portion of the conduit member 98.
  • the collar 82 is held in position by a threaded nut 85 that frictionally engages an upper threaded end portion of the conduit pipe member 98 that, in turn, engages a ring bearing 86.
  • the ring bearing 86 is carried by the upper end of the collar 82 in an operative position about the pipe member 98. Since the pipe member 98 is adapted to remain in a fixed or non-rotatable position and, in effect, serves as a centrally disposed pivot shaft for the rotation of the turret A, means must be provided for permitting relative rotational movement between the upper end portion of the conduit member 98 and a connecting conduit or pipe member 92.
  • the upper end of the pipe member 98 has a bearing hub extension part 98b secured thereto by weld metal w, and extending rotatably upwardly within the bore of a vertical hub portion 90b that projects centrally downwardly from a rectangular-shaped distributor head 90.
  • An O-ring gasket 91 is shown carried by the vertical hub portion 90b to seal-off the rotatable connection between the bore and the hub extension part 98b.
  • Pipe member 92 is provided at its outer end with a coupling housing part 31 and is adapted to extend along the one end portion of the shorter length arm structure 100 to receive a nose end part 45 of the pipe member 30 of an innermost truss section of the spray arm assembly C.
  • the inner end of the pipe member 92 is shown in FIG. 20 extending into a horizontal armlike bore portion 90a of the distributor head 90, and sealed-off with respect thereto by an O-ring gasket 93. It will thus be seen that the upper frame structure 80 and the cruciform-shaped support arm structure E are rotatably carried with the column A on the stationary lower frame structure 75 for rotation about the vertical end portion of the pipe member 98.
  • frame members and side enclosing members or plates of the rotatable upper frame 80 are secured together by bolt and nut assemblies 94.
  • the upper end of the structure 80 is shown closed-off by a heavy top or end plate 95.
  • the main or distributing arm means of assembly C has a ratio of length with respect to length of the auxiliary, counterweight or supporting arm or arm assembly D of about 4 to 1, thus emphasizing the fact that the invention advantageously makes posssible the practical employment of a distributing arm C of substantially great length by the use of counterweight support arm or arm assembly D of materially shorter length.
  • the length of the distributing arm assembly will not be greater than about one-third the length of supporting arm means for the counterweight 65.
  • the distributing arm and the supporting arm means each has a moment arm measured horizontally from the vertical axis about which the apparatus rotates to the center of gravity of each.
  • the distributing arm has a moment determined by multiplying its mass by its moment arm that is substantially equalled by the moment of the supporting arm means as determined by multiplying its mass by its moment arm. This is true although the moment arm of the latter is substantially shorter than the moment arm of the former.
  • a rotating tower-operated overhead irrigating apparatus for a ground area, having a centrally disposed operating base, a centrally upwardly extending column rotatably mounted on the base, a substantially horizontally outwardly extending liquid dispensing truss arm assembly of coupled pipe members mounted on and projecting radially from the column for rotation therewith, and liquid supply conduit means connected through the column to the coupled pipe members of said liquid dispensing arm assembly, the combination of a counterweight truss carried by said column and projecting substantially horizontally outwardly therefrom in a radial in-line opposed relation with respect to said dispensing arm assembly, first tension cable means connected (at) between spaced positions along said dispensing arm assembly (to) and an upper end portion of said column and (at) between spaced positions along said counterweight truss (to) and the upper end portion of said column, a lower substantially horizontally outwardly extending support arm carried by a lower end portion of said column in a substantially right-angular relationship with respect to said dispens
  • said first cable means extending in-line upwardly from said dispensing arm assembly and from said counterweight truss assembly.
  • a ring fixedly secured on the upper end of said column and having cable-receiving eyelet means thereon for securing the upper ends of said first cable means to the upper end portion of said column.
  • a stub shaft projecting upwardly from said connector ring, a collar rotatably secured on said stub shaft, and' tiedown anchor cable means secured to said collar and extending outwardly in a spread pattern therefrom.
  • a counterweight means mounted on an outer end portion of said counterweight truss.
  • said dispensing arm assembly defining a triangular-shaped truss made up of endwise bolted-together sections, and each said section carrying one pipe member length of said assembly as an upper connecting corner member thereof.
  • said counterweight truss being made up of metal frame member sections of rectangular shape provided with flanged end members that are bolted together in an endwise relation with respect to each other.
  • a counterweight means on an extreme outer end of said counterweight truss said counterweight means comprising a rectangular container defined by closed bottom and side walls and an open top end portion for receiving and carrying weight-producing means therein.
  • said support arm being positioned on a common horizontal plane with said dispensing arm assembly and said counterweight truss. and said means for rotating said dispensing arm assembly being mounted on said support arm and having wheel means engaging the operating base for movement thereabout.
  • a cruciform-shaped support arm assembly carried by the lower end portion of said column, one member of said support arm assembly being said support arm and a second member thereof being a horizontal support member having a right-angular cross-extending relation with respect to said support arm, and said second support member being connected at its opposite ends between inner end portions of said dispensing arm assembly and said counterweight truss for mounting them on said column.
  • wheel means carried by opposite end portions of said support arm and of said second member and operatively engaging the base for movement thereon and thereabout.
  • said means for rotating said dispensing arm assembly being mounted on and projecting downwardly from opposite end portions of said support arm and of said second support member and having wheels for circular movement about a vertical axis of said column, and said means for rotating said dispensing arm assembly comprising wheels engaging an upper surface of the operating base for rotative movement thereon about said column.
  • said dispensing arm assembly having a predetermined length, and said counterweight truss extending horizontally outwardly from said column a maximum distance of one-third of said predetermined length.

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  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Nozzles (AREA)
  • Bridges Or Land Bridges (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
US00268100A 1972-06-30 1972-06-30 Counterweighted tower irrigator Expired - Lifetime US3794064A (en)

Applications Claiming Priority (1)

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US26810072A 1972-06-30 1972-06-30

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US3794064A true US3794064A (en) 1974-02-26

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US00268100A Expired - Lifetime US3794064A (en) 1972-06-30 1972-06-30 Counterweighted tower irrigator

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US (1) US3794064A (enrdf_load_stackoverflow)
JP (1) JPS5515263B2 (enrdf_load_stackoverflow)
CA (1) CA961896A (enrdf_load_stackoverflow)
GB (1) GB1395866A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU782466B2 (en) * 2000-06-06 2005-07-28 Stuart Dundonald Reid Irrigator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0229421U (enrdf_load_stackoverflow) * 1988-08-12 1990-02-26

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB205656A (en) * 1922-09-22 1923-10-25 John William Hartley Improvements in sewage distributors
US3484046A (en) * 1969-01-03 1969-12-16 Gifford Hill Western Sprinkling apparatus
US3562994A (en) * 1968-09-30 1971-02-16 Carl V Von Linsowe Truss
US3647139A (en) * 1970-05-18 1972-03-07 Alco Standard Corp Tower irrigator

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB205656A (en) * 1922-09-22 1923-10-25 John William Hartley Improvements in sewage distributors
US3562994A (en) * 1968-09-30 1971-02-16 Carl V Von Linsowe Truss
US3484046A (en) * 1969-01-03 1969-12-16 Gifford Hill Western Sprinkling apparatus
US3647139A (en) * 1970-05-18 1972-03-07 Alco Standard Corp Tower irrigator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU782466B2 (en) * 2000-06-06 2005-07-28 Stuart Dundonald Reid Irrigator

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CA961896A (en) 1975-01-28
GB1395866A (en) 1975-05-29
JPS5515263B2 (enrdf_load_stackoverflow) 1980-04-22
JPS4937205A (enrdf_load_stackoverflow) 1974-04-06

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Owner name: ALCO INDUSTRIES, INC.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ALCO STANDARD CORPORATION AN OH CORP;REEL/FRAME:004300/0506

Effective date: 19840217