US3902667A

US3902667A - Spraying system

Info

Publication number: US3902667A
Application number: US456233A
Authority: US
Inventors: Clarence L Jackson
Original assignee: Individual
Current assignee: Individual
Priority date: 1974-03-29
Filing date: 1974-03-29
Publication date: 1975-09-02
Anticipated expiration: 1992-09-02
Also published as: CA1012938A

Abstract

A spraying system for use with vehicles which comprises at least two pumps in side-by-side relationship and being connected to a supply of material to be discharged, transmission means connecting said pumps operatively to the transfer case of the vehicle, the suction side of said pumps being each connected to a spray boom, there being fluid actuated means for controlling the movement of the spray boom vertically and horizontally.

Description

United States Patent 1191 Jackson [451 Sept. 2, 1975 1 1 SPRAYING SYSTEM [21] Appl. No.: 456,233

52 us. c1. 239/167; 239/172; 239/176; 239/302; 137/344 51 Int. c1. B05B 1/20; B05B 17/00 [58] Field of Search 239/146, 159-161, 239/l63-170, 172, 175, 176, 302, 332, 587, 588; 137/344 [56] References Cited UNITED STATES PATENTS 1,495,506 5/1924 Debnam et a]. 239/164 X 1,634,701 7/1927 Williams 239/167 2,590,400 3/1952 Gollnick 239/166 2,712,198 7/1955 Smith 239/164 x 2,725,256 11/1955 Devost et al 239/167 2,995,307 8/1961 McMahon 239/302 X 3,023,970 3/1962 Knoell 239/168 X 3,055,594 9/1962 Nansel 239/166 X 3,117,725 1/1964 Palmer 239/169 X 3,231,198 l/l966 Ackley et a1. 239/172 X 3,301,487 l/l967 Young 239/170 X Primary Examiner-Robert S. Ward, Jr. Attorney, Agent, or FirmRalph W. Kalish [57 ABSTRACT A spraying system for use with vehicles which comprises at least two pumps in side-by-side relationship and being connected to a supply of material to be discharged, transmission means connecting said pumps operatively to the transfer case of the vehicle, the suction side of said pumps being each connected to a spray boom, there being fluid actuated means for controlling the movement of the spray boom vertically and horizontally.

11 Claims, 12 Drawing Figures PATENTED SEP 2191s sum 6 OF 7 FIG.9

FIG. IO

PATENTEU 2 975 seam 7 o FIG H FIG. I2

SPRAYING SYSTEM BACKGROUND ANDSUMMARY OF TI -IE INVENTION This invention relates to spraying systems for use with vehicles as primarily for agricultural purposes.

It is an object of the present invention to provide a spraying system for use with vehicles for the dispensing of liquid materials, especially in the field of agriculture.

It is another object of the present invention to provide a spraying system of the character stated which is adapted for integration upon existing vehicles and, therefore, obviates the need for the costly production of specialized vehicles.

It is another object of the present invention to provide a spraying system which may incorporate a plurality of spray booms each being connected to a separate pump.

It is a further object of the present invention to provide a spraying system of the character stated which embodies control means for each boom and each pump so that the said components may be independently operated and adjusted.

It is a still further object of the present invention to provide a spraying system which embodies an unusual and novel boom construction incorporating fluid actuated means for adjustable positioning of the boom, both horizontally and vertically.-

It is another object of the present invention to provide a spraying system of the character stated which may be controlled from the cab of the vehicle so that operation of boththe vehicle and the spraying system may be under the control of a single individual.

It is a further object of the present invention to provide a spraying system of the character stated which is economical in construction; which is extremely durable and reliable in operation, being designed for stability and resistance to breakdown; and the operation of which assures of effective material discharge for the areas being treated.

DESCRIPTION OFTHE DRAWINGS FIG. 1 is a rear perspective view of a truck having mounted thereon a spraying system constructed in accordance with and embodying the present invention.

FIG. 2 is a rear perspective view of the truck but showing the left-hand boom in extended condition.

FIG. 3 is an elevational view taken at the reference 3 in FIG. 1, but with the casing closure removed.

, FIG. 4 is a top plan view taken on the line 4-4 of FIG. 3.

FIG. 5 is an enlarged elevational view of the extended boom shown in FIG. 2 and illustrating the same in lowcred condition in phantom lines.

FIG. 6 is a fragmentary horizontal transverse sectional view taken on the line 66 of FIG. 5.

FIG. 7 is a vertical transverse sectional view taken on the line 7-7 of FIG. 5.

FIG. 8 is a vertical transverse sectional view taken on the line 8-8 of FIG. 6.

FIG. 9 is a vertical transverse sectional view taken on the line 99 of FIG. 4.

FIG. 10 is a vertical transverse sectional view taken on the line 10--10 of FIG. 4.

FIG. 11 is a vertical transverse sectionalview taken on the line llll of FIG. 4. i i

FIG. 12 is a vertical transverse sectional view taken on the line 1212 of FIG. 4.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now by reference characters to the drawings which illustrate the preferred embodiment of the present invention, 1 designates generally a vehicle, such as a truck, having a body 2 supported by pairs of front and

rear ground Wheels

3,4 and having a cab 5, and a main liquid tank 6; there being suitably mounted upon said vehicle rearwardly of said tank a spraying system, indicated generally S. Vehicle 1 may be of the four-wheel drive type, having a front wheel drive shaft and a rear wheel propeller shaft operatively interconnected within a conventional transfer case (not shown) supported in the usual manner from the frame of said vehicle I. Said tank 6 thus constitutes a reservoir for the particular liquid to be dispensed by spraying system S, such as, for instance, fertilizing solutions and the like as used for agricultural purposes.

Connected in a customary manner, such as by sprocket and chain to a power take-off of the vehicle transfer case, is a shaft 7 which extends rearwardly under the vehicle frame for journalling within a pair of

pillow blocks

8,9 depending from spaced-apart

parallel transversecomponents

10, 11, respectively, of the base frame f of a casing c provided rearwardly of tank 6 for containing certain components of spraying system S to be presently described. Said casing c is provided with a rearward hinged closure 12 to permit of ready access to the interior of casing c. Said shaft 7 immediately rearwardly of transverse component 10 mounts a sprocket 13 about which is engaged one end portion of a transmission chain 14, the lower course 15 of which extends laterally and upwardly for engagement of the other end portion of said chain 14 about a sprocket 16 carried on the end of a crankshaft 17 of a crank case 18 of a pump 19 as of the two cylinder, double-acting piston type. On the rearward face of said crank case 18 there is provided a dial 20 whereby the length of stroke of the crankshaft may be controlled for providing the requisite displacement of operation of pump 19 in view of the power available from the transfer case. Said transmission chain 14 in its lower course proceeds over .a guide roller 21, and. the upper course 22 of said chain 14 engages a tensioning sprocket 23 suitably mounted for vertical adjustability upon an apertured post 24 mounted upon the adjacent portion of frame f.

Mounted on shaft 7 adjacent to, but rearwardly of, sprocket 13, is a companion drive sprocket 25, about which is engaged one end portion of a drive chain 26,

the upper course 27 of which progresses upwardly and laterally outwardly, toward the opposite side of vehicle 1 and engages an uppertensioning sprocket 28. Said chain 26 at its other end portion engages a sprocket 29 fixed upon a crankshaft 30 of a crank case 31 of a pump 32 which is of like construction as pump 19 above described. The lower course of drive chain 26, indicated at 27' engages a lower tensioning sprocket 28. Said tensioning

sprockets

28,28 are mounted upon an arm a fixed at its lower end upon frame f and having an elongated aperture at e within which said

sprockets

28,28 are mounted for adjustment longitudinally thereof. There is a control dial 33 on the rearward face of crank case 31, the operation of which permits of control of displacement of operation of pump 32.

Both of said

pumps

19,32 are powered from the same source but, if desired, may be individually adjusted should a differential in rates of operation be desired. Each

pump

19,32 is connected on its suction side to an

inlet conduit

34,35, respectively, which at their opposite ends are connected to main tank 6. At their discharge ends each

pump

19,32 is provided with a

discharge pipe section

36,37 which is connected to a

fitting

38,39, respectively, which is in communication with the inner end of a short vertically extending surge suppressor and

pressure equalizing chamber

40,41, respectively; the inner end of a

discharge conduit

42,43, respectively; and the inner end of an

outlet conduit

44,45, respectively. Said outlet conduits 44,45 at their opposite ends are connected to

adapters

46,47 suitably fixed upon frame f as by

mounting plates

48,49, respectively; the same being directed rearwardly and transversely spaced-apart.

Adapters

46,47 permit of connection to hosing and the like for hand operation. It will be seen that each

pump

19,32 also comprehends a

strainer

50,51, respectively.

Carried upon shaft 7 immediately upwardly of pillow block 9 is a drive sprocket 52 about which is trained one end portion of a drive chain 53, the other end of which is engaged about a driven sprocket 54 of relatively reduced diameter mounted upon a jack shaft 55 which is axially parallel to shaft 7, and the ends of which are journalled in pillow block bearings 56,57 fixed on transverse components 11 and a parallel beam 58 integrated within frame f. Engaging the upper course 59 of chain 53 is a tension wheel 60 adjustably mounted on the lower end of a arm 61 depending from a bracket 62 mounted upon transverse component 11. Jack shaft 55 also mounts a drive sprocket 63 proximate pillow block bearings 56 about which is engaged an end portion of a drive chain 64 which progresses downwardly and laterally for disposition of its opposite end portion about a driven sprocket 65 of relatively reduced cross section, said latter being carried upon the shaft 66 of an agitation pump 67 of the centrifugal type. Pump 67 is suitably suspended by brackets, as at 68, from the underside of frame f, and with its suction side being connected by a flexible conduit 69 to the common sump (not shown) of main tank 6. It will thus be seen that each of the

pumps

19,32 and 67 are connected by

conduits

34, 35 and 69, respectively, to the same tank but with there being baffles (not shown) within the tank sump for separating the volumes thereof communicating with said conduits. The discharge side of pump 67 is connected by a flexible tube 70 to one side of a T-fitting 71, the upper end of which is engaged to a pipe 72 which communicates with the rearward end of a sparger line (not shown), the forward end of which is connected to a flush-out tank; there being the customary connections between the latter and the main tank 6. A hand operated valve 73 is provided within pipe 72 for optional opening of said pipe 72 as desired. The other side of T-fitting 71 engages a capped connector 74, the removal of which permits of suitable connection for transfer purposes, if desired. It will thus be seen that the transmission for pump 67 contains a suitable gear ratio to allow for a step-up in the speed of said pump 67 as such may be required. Conversely, it will be noted that with reference to FIGS. 9 and 10, the transmission for

pumps

19 and 32 permits of relative speed reduction so that said pumps, being preferably of the piston-reciprocating type, will be operated for optimum efficiency. Thus with a single power source the aforesaid three pumps may be operated at preselected speeds for operational purposes a will be described more fully hereinbelow.

As may best be seen in FIGS. 1 and 2, there is provided at each side of casing c, a boom assembly, as indicated at B. Since each of said assemblies are of like construction, that disposed on the left-hand side of FIG. 1 will be described.

Turning now to FIG. 5 it will be seen that discharge conduit 43 extends outwardly through a suitable opening in the casing end wall and with its outer portion being mounted upon, in axial parallel relationship with, a tubular spray boom 75. Substantially centrally of boom 75 on its normally upper surface there is provided a fitting 76 defining interiorly a chamber for communication with the interior of boom 75; said fitting being adapted for detachable engagement to the outer end extremity of conduit 43 which carries a complementary fitting 77. Said conduit is maintained against displacement by means of a bracket, as indicated at 78, which is rigid with one end of a brace arm 79, the other or outer end of which is fixed upon the upper edge of a short plate 80 mounted upon fitting 76; there being a companion brace arm 81 extending from the outer end of arm 79 to a bracket 82 secured upon spray boom 75 in proximity to its outer end extremity. Provided spacedly throughout the extent of spray boom 75 are discharge apertures 83 through which is dispensed, by spraying, liquid received from discharge conduit 43. The outer end extremity of spray boom 75 is provided with a nozzle 84 and proximate said end there is mounted a short branch pipe 85 internally communicating with boom 75 and being in axially normal relationship thereto. Said branch pipe 85 mounts a nozzle 86 at its outer end which is adapted for usage and high volume or high gallonage spraying.

Said boom 76 at its lower or inner end is engaged to a pivot rod 87 received within bearings provided in spaced-apart

plates

88,88 of a mounting member 89 secured, as by a bolt 90, upon a base plate 91. Secured, as by welding, at its lower end upon base plate 91, is an upstanding collar 92 for receiving the lower end portion of a vertically presented pivot rod-93, the lower end of which projects downwardly through an opening in plate 91 and through an aligned opening (not shown) in an underlying support plate 94 fixed upon frame f and in planarwise parallel relationship to plate 91. The lower extremity of pivot rod 93 is fixedly received within a receptacle 95 depending from plate 94. Thus, collar 92 with its associated structure, is swingable about pivot rod 93. Mounted on plate 91 proximate collar 92 is a bolt 96 for engaging the outer end of a piston 97 of a fluid cylinder 98; the opposite end of which is mounted upon plate 94. It will thus be seen that with piston 97 in retracted or withdrawn condition, base plate 91 will be swung through an angle of substantially as indicated in phantom lines in FIG. 7, and as illustrated in FIG. 2, so as to effect a swinging of boom 75 with its associated structure into operating or spraying condition. With piston 97 extended, under appropriate fluid pressure, plate 91, together with the components mounted thereon, will swing returningly through a 90 are thereby presenting boom 75 in inoperative position, adjacent to tank 6 for facilitating transportability as shown in FIG. 1.

Pivot rod 93 above collar 92 extends through aligned upper and lower sleeves 99,100 which are welded or otherwise rigid with adjacent portions of frame f. Disposed about pivot rod 93 immediately above sleeve 100 is a collar 101 to which is integrally secured an outwardly extending, relatively short arm 102 to the outer end of which is pivotally mounted, as atl03, the lower end of a fluid cylinder 104 provided witha piston 105. Said piston, at its outer end, is rockably engaged to the outer end of a connecting arm 106, the other end of which is fixed, as at 107, to a mounting arm 108 rockably engaged, as at 109, upon theupper endof a finial 110, secured upon pivot rod 93 immediately above upper sleeve 99. Said finial 110 is connected tocollar 101 by a strap 111 thereby integrating the supports for cylinder 104 and its associated components.

Fixed also to mounting arm 108 for extension normally upwardly therefrom, is the lower end of a yoke 112, the upper ends of which are engaged to trunions 113 which project from opposite sides of a short sleeve 115 whereby the latter is swingable about the axis through said trunions; said latter encircling a lift rod 116, the outer or normally lower end of which is angulated for loose fitting within an opening 117 in plate 80. The upper or inner end of sleeve 115 bears against a stop member 118 adjustably disposed upon lift rod 1 16, as by a set screw 119. The other end of sleeve 115 bears against the upper or inner end of a coil spring 120, the lower end of which abuts against the proximate face of a stop collar 121.

It will thus be seen that upon fluid being admitted to cylinder 104 and causing piston 105 to be extended, yoke 112 will be moved into vertical position and thereby effect a raising of lift rod 116 which, in turn, will pull boom 75 into raised condition, as shown in FIGS. 1,2 and 5. Conversely, upon withdraw] of fluid from cylinder 104 with consequent retraction of piston S, yoke 112 will cause lift rod 116 to be lowered and thereby, as it were, push spray boom 75 into downward or horizontal position (as shown in phantom lines in FIG. 5) for spraying operation. Spring 120 serves to eliminate any shock being transmitted to the system by reason of the raising and lowering of lift rod 116. i

From the foregoing it should be apparent that boom assembly B permits of unique adjustability since by operation of cylinder 98 the location of boom 75 within a horizontal arc may be determined and by operation of cylinder 104 the movement of boom 75 within .alvertical arc is provided. Thus, within theparticular ranges, boom 75 may be selectedly positioned.

With reference to FIG. 8, it will be seen that a shear pin 122 extends through aligned openings in the base portion of mounting member 89 and base plate 91. Said pin is adapted to break in the event of the application of an accidental force of sufficient magnitude upon the boom assembly so that the boom may be free to swing about bolt 90 without breaking.

Referring now to FIG. 7 it will be seen that plate 91 on its normally inner edge is secured to the bottom edge of a vertically disposed plate 123, which plate 123 is also fixed to collar 92 (see FIG. 7). Said plate 123 on its opposite side is provided with a projecting ear 124 which extends between aligned upper and lower ears 125,126, respectively, of a frame element 127 which carries a detent 128 for disposition against sleeve 100. Said ears 124,125,126 are provided with registering openings for disposition therethrough of a locking bolt 129. Thus, when said bolt 129 is in position, detent 128 will serve to inhibit rotation of the boom assembly B and ,therebypermit the boom to be secure in extended position without utilization of thefluid cylinders.

ln viewpf the foregoing, the spraying system of the present invention constitutes numerous unique advantages. Thus, each boom assembly may be operated independently of the other and at different rates of flow as well as with the spray booms in different attitudes. It will be-seen that the entire system may be readily controlled from the cab of the vehicle by manipulation of -switches for energizing the particular cylinders of each boom assembly B for disposing the associated spray boom in desired position, as well as for operation of

pumps

19 and 32. Obviously, only a single pump and its related spray boom assembly B may be actuated. The versatility of the present invention is indeed apparent by reason of the marked ranges of operation for both the pumps and the spray booms. The system of the present invention is also manifestly adapted for controlled or metered material discharge so that solutions of predetermined strength may be sprayed in the appropriate concentration for the area being treated. By reason of the operative connection between

pumps

19,32 with the transfer case of vehicle 1 the rate of discharge can be co-ordinated with the vehicular speed.

Having described my invention, what I claim and desire to obtain by Letters Patent of the United States is:

1. For use with a vehicle having a source of supply of liquid to be dispensed and a transfer case, a spraying system comprising at least one pump mounted upon said vehicle and having a suction side and a discharge side, means connecting said suction side to said source of supply, means connecting said pump to said vehicle transfer case for operation in direct response thereto, an elongated spray boom having an inner end and an outer end, said sp'ray boom atits inner end being swingably engaged upon said vehicle, first means for swinging of said spray boomwithin a vertical plane comprising a lift rod having a normally outer end and an inner end, said lift rod outer end being engaged to said beam, first fluid means mounted on said vehicle comprising a substantially vertical fluid cylinder, a piston provided in said cylinder, means interengaging said piston and said lift rod, second means for effecting swinging of said spray boom in a horizontal plane comprising second fluid means having a horizontally disposed fluid cylinder, a piston carried in said last mentioned cylinder, means interconnecting said piston and said spray boom, and means connecting said discharge side of said pump with said spray boom.

2. For use with a vehicle, a spraying system as defined in claim 1 and further characterized by said means engaging said discharge side of said pump with said spray boom being a flexible conduit for movement with said boom.

3. For use with a vehicle, a spraying system as defined in claim 1 and further characterized by said first and second fluid means being hydraulic.

4. For use with a vehicle, a spraying system as defined in claim 1 and further characterized by said second means comprising a base plate mounted on said vehicle in its rearward side portion for swingable movement within a horizontal plane, said spray boom being pivotally connected to said base plate in its inner or normally vehicle adjacent portion, the piston of said fluid cylinder of said second fluid means being connected to said base plate for effecting swinging of the same responsive to fluid action.

5. For use with a vehicle, a spraying system as defined in claim 4 and further characterized by said fluid cylinder of said second fluid means being presented with its longitudinal axis extending substantially lengthwise of the vehicle, means secured to said vehicle in its rearward side portion fixedly mounting the aforesaid fluid cylinder.

6. For use with a vehicle having a source of supply liquid to be dispensed and a transfer case, a spraying system comprising at least one pump mounted upon said vehicle and having a suction side and a discharge side, means connecting said suction side to said source of supply, means connecting said pump to said vehicle transfer case for operation in direct response thereto, an elongated spray boom having an inner end and an outer end, said spray boom at its inner end being swingably engaged upon said vehicle, first means controlling swinging of said spray boom within a vertical plane and comprising a lift rod having an outer end engaged to said beam in its central portion, said lift rod having an inner end, hydraulic means engaged to said lift rod in its inner end portion and comprising a vertical post, a substantially vertical hydraulic cylinder, a piston provided in said cylinder, means pivotally engaging the lower end of said hydraulic cylinder and said post, linkage means engaging the piston to said lift rod proximate the inner end of the latter, and second means controlling swinging of said spray boom in a horizontal plane, and means engaging said discharge side of said pump with said spray boom.

7. For use with a vehicle having a source of supply of liquid to be dispensed and a transfer case, a spraying system comprising first and second pumps mounted upon said vehicle, and each having a suction side and a discharge side, means connecting the suction side of each of said pumps to said vehicle transfer case for operation in direct response thereto, a first and second spray boom respectively associated with each of said first and second pumps and being swingably mounted on said vehicle, each spray boom being elongated and having an inner end and an outer end, each spray boom at its inner end being swingably engaged upon said vehicle, means connecting a discharge side of each of said first and second pumps with the related first and second spray boom, there being for each of said first and second spray booms discrete first means for controlling swinging of same within a vertical plane and comprising a lift rod having an outer end engaged to said beam, said lift rod having an inner end and fluid means comprising a substantially vertical fluid cylinder and a pisdischarge side of said ton, means interengaging said piston and said lift rod proximate the inner'end of the latter, and second discrete means provided for each of said first and second spray booms for swinging of the same within a horizontal plane, comprising fluid means having a substantially horizontally disposed fluid cylinder,-a piston provided in said cylinder,-and means connecting said piston and said spray boom,

8. For use with a vehicle, a spraying system as defined in claim 7 and further characterized by first and second speed control means connected with said first and second pumps respectively whereby the latter may be operated at different rates.

9. For use with a vehicle, a spraying system as defined in claim 7 and further characterized by said fluid means being hydraulic and said first and second pumps being of positive displacement type.

10. For use with a vehicle, a spraying system as defined in claim 7 and further characterized by casing means provided on the rear of said vehicle, and said spraying system pumps being disposed within said casl 1. For use with a vehicle having an engine, a source of supply of liquid to be dispensed, a front wheel drive shaft, a rear wheel propeller shaft, and a transfer case interconnecting said drive shaft and said propeller shaft,.casing means provided at the rear of said vehicle, an integrated spraying system provided on said vehicle and comprising at least one pump mounted within said casing, said pump having a suction side and a discharge side, means connecting said suction side to said source of supply, means connecting said pump to said transfer case for operation in direct response thereto, speed control means provided in said casing and connected to said pump, an elongated spray boom having an inner end and an outer end, said spray boom at itsinner end being swingably engaged upon said vehicle in its rearward side portion outwardly of, but adjacent to, said casing, means for swinging of said spray boom within a vertical plane comprising a lift rod having a normally outer end and an inner end, said lift rod outer end being engaged to said beam, first fluid means mounted on said vehicle comprising a substantially vertical fluid cylinder, a piston provided in said cylinder, means interengaging said piston and said lift rod, second means for effecting swinging of said spray boom in a horizontal plane comprising second fluid means having a horizontally disposed fluid cylinder, a piston carried in said last mentioned cylinder, means interconnecting said piston and said spray boom, and means connecting said pump with said spray boom.

Claims

1. For use with a vehicle having a source of supply of liquid to be dIspensed and a transfer case, a spraying system comprising at least one pump mounted upon said vehicle and having a suction side and a discharge side, means connecting said suction side to said source of supply, means connecting said pump to said vehicle transfer case for operation in direct response thereto, an elongated spray boom having an inner end and an outer end, said spray boom at its inner end being swingably engaged upon said vehicle, first means for swinging of said spray boom within a vertical plane comprising a lift rod having a normally outer end and an inner end, said lift rod outer end being engaged to said beam, first fluid means mounted on said vehicle comprising a substantially vertical fluid cylinder, a piston provided in said cylinder, means interengaging said piston and said lift rod, second means for effecting swinging of said spray boom in a horizontal plane comprising second fluid means having a horizontally disposed fluid cylinder, a piston carried in said last mentioned cylinder, means interconnecting said piston and said spray boom, and means connecting said discharge side of said pump with said spray boom.

6. For use with a vehicle having a source of supply of liquid to be dispensed and a transfer case, a spraying system comprising at least one pump mounted upon said vehicle and having a suction side and a discharge side, means connecting said suction side to said source of supply, means connecting said pump to said vehicle transfer case for operation in direct response thereto, an elongated spray boom having an inner end and an outer end, said spray boom at its inner end being swingably engaged upon said vehicle, first means controlling swinging of said spray boom within a vertical plane and comprising a lift rod having an outer end engaged to said beam in its central portion, said lift rod having an inner end, hydraulic means engaged to said lift rod in its inner end portion and comprising a vertical post, a substantially vertical hydraulic cylinder, a piston provided in said cylinder, means pivotally engaging the lower end of said hydraulic cylinder and said post, linkage means engaging the piston to said lift rod proximate the inner end of the latter, and second means controlling swinging of said spray boom in a horizontal plane, and means engaging said discharge side of said pump with said spray boom.

7. For use with a vehicle having a source of supply of liquid to be dispensed and a transfer case, a spraying system comprising first and second pumps mounted upon said vehicle, and each having a suction side and a discharge side, means connecting the suction side of each of said pumps to said vehicle transfer case for operation in direct response thereto, a first and second spray boom respectively associated wIth each of said first and second pumps and being swingably mounted on said vehicle, each spray boom being elongated and having an inner end and an outer end, each spray boom at its inner end being swingably engaged upon said vehicle, means connecting a discharge side of each of said first and second pumps with the related first and second spray boom, there being for each of said first and second spray booms discrete first means for controlling swinging of same within a vertical plane and comprising a lift rod having an outer end engaged to said beam, said lift rod having an inner end and fluid means comprising a substantially vertical fluid cylinder and a piston, means interengaging said piston and said lift rod proximate the inner end of the latter, and second discrete means provided for each of said first and second spray booms for swinging of the same within a horizontal plane, comprising fluid means having a substantially horizontally disposed fluid cylinder, a piston provided in said cylinder, and means connecting said piston and said spray boom.

10. For use with a vehicle, a spraying system as defined in claim 7 and further characterized by casing means provided on the rear of said vehicle, and said spraying system pumps being disposed within said casing.

11. For use with a vehicle having an engine, a source of supply of liquid to be dispensed, a front wheel drive shaft, a rear wheel propeller shaft, and a transfer case interconnecting said drive shaft and said propeller shaft, casing means provided at the rear of said vehicle, an integrated spraying system provided on said vehicle and comprising at least one pump mounted within said casing, said pump having a suction side and a discharge side, means connecting said suction side to said source of supply, means connecting said pump to said transfer case for operation in direct response thereto, speed control means provided in said casing and connected to said pump, an elongated spray boom having an inner end and an outer end, said spray boom at its inner end being swingably engaged upon said vehicle in its rearward side portion outwardly of, but adjacent to, said casing, means for swinging of said spray boom within a vertical plane comprising a lift rod having a normally outer end and an inner end, said lift rod outer end being engaged to said beam, first fluid means mounted on said vehicle comprising a substantially vertical fluid cylinder, a piston provided in said cylinder, means interengaging said piston and said lift rod, second means for effecting swinging of said spray boom in a horizontal plane comprising second fluid means having a horizontally disposed fluid cylinder, a piston carried in said last mentioned cylinder, means interconnecting said piston and said spray boom, and means connecting said discharge side of said pump with said spray boom.