Spray boom hinge

July 8, 1952 a. h. pinke 2,602,684

SPRAY BOOM HINGE

Filed Sept. 21, 1949

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Patented July 8, 1952

2,602,684

UNITED STATES PATENT OFFICE

2,602,684

SERA'S? BOOMHINGE

August Hi Pinke, Hastings, Minn., assignor tcHi Dk. Hudson-Manufacturing Company; Chi-, cage; Hh,. a. cflEEnratioit of Minnesota

Applicatibn. September 21, Hf491,SeriaENe. 11027

S: Claims.

The present invention relates: to a novel litage for a spray· boom, and- especially- to' a novel' hinge construction and assembly for resiliently- and yieldably mounting an end boom section- upon a rigid: boom section: to such manner: that the end ₅section may be quickly adjusted to-and held in a horizontal position- or at any angle above or below horizontal, to permit spraying- on sloping roadsides-or spraying-rows of shrubbery; hedges, small' trees, going through gates, etc. j ₀

Among: the: objects of the present invention is the provision of a novel hinge arrangement fof a sectional spray- boom in which the boom provides- the; rigidity necessary- to maintain, the proper spray pattern, yet is: sufficiently flexible ₁₅to prevent breaking- or damage when the end boom section- or sections strike an- obstruction.

The-present invention further comprehends the provision of a novel hinge- assembly- pivotally connecting· a fixed and: a swingable boom section in ₂₀such manner that the latter: may be quickly adjusted to: any- angular position and¹ to which. adjusted. position: it is held' from whipping-forward or backward.

A- further object of the presentinvention: is the ₂provision in- a- boom- assembly of a hinge- adjustably and pivotally- mounting an end- boom section- in such- manner that should such section, accidentally strike- a post, stump,, rock or other solid or stationary object; such section is per- _3omitted movement about a vertical' axis sufficient for tins section to clear the object without damage to- the boom assembly, and when the object is cleared⁵, the end boom section is automatically returned to. its-initially adjusted position. _3g

A still further object of the present invention is the provision- of a novel, boom and hinge- assembly including a fixed and an adjustable boom section suspended from a boom chain ta adjusted, operative position and with the adjustable boom ₄₀section hingedly and tensionally connected to the fixed' boom section in such manner that when the adjustable boom section is swung backward through- an angle of approximately 90^?, the hinge assembly automatically turns this adjust- 45 able boom section over at a right angle to its normal operative position so as to expose and locate the spray nozzles thereon for ready and most effective assembly; disassembly, inspection or servicing of these nozzles and: associated 50 mechanism. This greatly facilitates such assembly or disassembly and eliminates the necessity of bending or stooping; to secure access to these nozzles or their connections..

Further objects are to provide a construction 55 of maximum simplicity, efficiency, economy and ease of assembly and operation, and such, further objects, advantages and capabilities as will' later more fully appear and are inherently possessed thereby. ⁰⁰ (Ct 28.7i~.10j0).

The: invention futther resides: to. the· constrttOtfbir, combination and: arrangement of: parts- fllustrated to the accompanying drawings; and while there is- shown thereto a preferred embodiment, it- is- to be understood' that the same is susceptible of modification and: change, and comprehends other details, arrangements of parts, features- and constructions without departing from the spirit at the invention.

In the drawings:

Figure 1 is a view in front elevation of asprayer equipped with, the- novel, boom, construction and hinge assembly and with one; end boom section elevated' and: the other in horizontal operative position- for field spraying.

Fig. 2 is an enlarged fragmentary view in front elevation of the navel hinge assembly for plvotally and yieldably connecting an end boom section to the center section of the boom, a portion of- the angle arm of the end boom section, being broken, away to show- the manner of protecting the pipe or tubing.

Fig; 3; is: a top Plan view of Fig; 2.

Fig, 4' is: a: fragmentary; top plan.viewlike_s®g; 3, but showing the end boom section moved rearwardly and at an angle with respect to the central boom section.

Fig. 5; is a fragmentary view in front elevation showing the end boom section elevated by being turned' or rotated about the pivot pin through an angle of approximately 90° from the· position shown in Fig. 4.

Referring- more particularly to the disclosure to- the drawing to which there is shown an illustrative embodiment of a novel hinged boom assembly for a power sprayer for effectively· spraying- an. insecticide, fungicide, disinfectant, Weed killer or other soluble solution ta a unifbiin amount: and in a uniform pattern. The boom assembly may be mounted at the. front of a: vehicle or at the rear of a power sprayer and com? prises a center boom section I and elongated end Or boom sections 2' and j 3, there being; one shown at each side of the center section, and each, boom section consisting of a spray tube or pipe 4 disposed within and beneath a protecting angle bar 3 suspended at suitable height by the outer end of a chain. 6. Each spray tube or pipe is. held anchored in its angle iron by suitable clamps dr clamping brackets. 7' and provided at spaced, intervals with depending spray nozzles 8, A flexible supply tube 9: leading from a receptacle i f of the power sprayer and containing the spray solution discharges- into a fitting 12 for distributing: the solution to the. spray tube or pipe of; the central boom section I and through the flexible tubes 13 to the spray tubes or pipes 4 in the end boom sectibns Z and. 3,

The: center section I terminates at each end in a clevis-like head consisting of two clevises 14 and 15 pivotally or rotatably connected by a pivot pin 16, the clevis 15 being secured to and carrying a plate 17 provided adjacent each end with a laterally and outwardly opening slot 18 and having at the juncture of this plate and the clevis (5 an upwardly and a downwardly projecting ear or lug 19 to which the inner ends of an. upper, and a lower coil spring 21 and 22 are connected. These springs have their outer ends connected to pins or hooks 23 projecting upwardly and downwardly from the angle bar 5. At its inner end this bar 5 is provided with a cross-head 24 comprising an upper plate 25 and a lower plate 26 welded or otherwise rigidly connected to the bar 5 and maintained in spaced relation. Adjacent the opposite ends of this cross-head 24 are provided transversely extending pins 27 spaced apart in such manner as to seat in the slots 18 when the end boom section 3 is in longitudinal· alignment with the stationary or fixed section 1.

It will be. apparent from the disclosure of this hinge mounting that either end boom section 2 or 3 may be raised and lowered by tilting it about the pivot pin ΪS, and also that either end section may be swung laterally, forwardly or backwardly 2 from its normal operative, position, in which case one end or.the.other of the cross or boom head 24 consisting of the plates 25 and 26, moves away from the plate 11 with the springs 21 and 22 serving to return the end boom section to its nor- s mal or longitudinally aligned position with the fixed section I.

It will be observed that the springs 2i and 22 .constitute the sole means for holding the boom section head 24 in cooperative relation with the s stationary head or plate 17, and permit the end boom section to give sufficiently should it strike a post, stump, tree, rock or other substantially rigid object and thus to clear such object. When the object is cleared, the springs 21 and 22 re- 4 tract the erid boom section into correct operative position.

When in normal operative position, the pins 27 ..in the slots 18 prevent a lateral displacement of the boom head, and the springs prevent sepa- i ration of the heads. Tilting movement, however, in either direction is permitted when pressure exerted laterally upon the boom withdraws one of the pins 27 from its slot 18, while the other pin in its respective slot serves as the offset hinge g pivot about which the boom swings.

Should such tilting or lateral movement continue to a position where the end boom section is swung rearwardly approximately 90° as shown in Fig. 4, this section is then automatically turned z over or pivoted about the hinge pin i 6 (see Fig. 5) and elevated through an angle of approximately 90°, and in this position fully exposes the spray .pipe or tube 4 for inspecting, changing or servicing the tube or spray nozzles without bending { or. stooping to secure access thereto. This turning up or elevating of either end boom section when swung back through an angle of approximately 90° from its normal operative position (Fig. 3), is due to the off-set of the hinge (Fig. 4) ( and the connection of the outer end of the supporting boom chain 6 to its end boom section.

' . Haying thus disclosed the invention, I claim:

1. In a spray boom having a fixed boom section and one or more end boom sections each con- 7 taining a spray tube and nozzles for receiving and dispensing a spray solution, a hinge assembly for pivotally connecting the fixed and end .boom , sections to permit the latter to be held at any.angle with respect to the vertical and com- 1

2,602,684 prising a pair of pivotally connected members mounted on the end of the fixed section, a plate secured to one of said members and having a slot adjacent its opposite ends, a boom head com> prising spaced plate members secured to the end boom section and adapted to receive said plate therebetween and provided with a pin disposed between these spaced members adjacent each end thereof adapted to be received in a slot in said 0 plate whereby when the boom sections are in longitudinal: alignment said plate is disposed within the boom head and the end boom section may be swung laterally from such position of alignment and pivot about one of the pins, and 5 tension means for returning the end boom section from such lateral position to its normal position aligned longitudinally , with the fixed boom section. .

2. In. a spray boom , having a fixed boom sec0 tion and one or more end boom sections each containing a spray , tube and nozzles for receiving and dispensing a spray solution, a hinge assembly for pivotally connecting the fixed and end boom sections to permit the latter to be held at any angle with respect to the vertical and to be swung laterally from the fixed boom section, said hinge assembly comprising a pair of pivotally . connected members mounted on the end of the fixed section, a plate secured to one of said members 0 and having a slot adjacent its opposite ends, a boom head comprising spaced plate members secured to the end boom section adapted to receive said plate therebetween and-a pin disposed between these spaced members adjacent each end 5 thereof adapted to be received in a slot in said plate whereby when the boom sections are in longitudinal alignment said plate is disposed within the boom head and the end boom section is free to pivot vertically, and when in this position the 0 end boom section may be swung laterally from such aligned position with the fixed boom section, and tension springs connecting the end boom section to the plate for returning the end boom section to its normal position aligned longitudi.5 nally with the fixed boom section.

3. In >a spray boom having a fixed boom section and an end boom section, hinge means', for _;pivotally connecting the end section to the. fixed section for swinging the end section about a <0 horizontal as well as a vertical axis to permit the end boom section to pivot and be held in any desired angle with respect to the vertical and also to pivot laterally when striking ah object, said, hinge means comprising a clevis head havio ing a part secured to the fixed section and a part pivotally connected to the part secured to the fixed section and connected to the end section to permit the latter to pivot and be held at any desired angle with the vertical, a plate secured io to the pivotal part, a boom head secured to the end section and adapted to receive the plate, a pivotal connection between the plate and head to permit the end section to swing laterally with respect to the fixed section and plate from its '5 normal position in which the sections are in longitudinal alignment, and tension means connecting the end section to the plate for returning toe end section to its normal .position after it has swung laterally.

Ό 4. A spray boom hinge assembly for pivotally connecting, an end boom section to a fixed boom section whereby the. end section may be swung vertically and held in the desired position to permit spraying on sloping terrain, rows of shrub’s bery, hedges, small trees and the like and to

2,602,670 tion, I wish to be understood as being limited solely by the scope of the appended claim, rather than by any details of the illustrative showing and foregoing description.