Mobile spray apparatus

Claim 1

A lightweight mobile spray apparatus comprising a frame carried on a pair of bicycle-type wheels having a common rotational axis, the frame including elongate hitch members extending to a hitch plate at a foward end of the frame for propelling the frame manually over the ground or for connecting same to a towing vehicle, the frame having a body portion between the wheels, a liquid supply tank on the body portion of the frame, a vertically adjustable horizontally extending transverse spray boom mounted on the frame behind the body portion, the spray boom including a plurality of spaced spray nozzles, said horizontal spray boom being mounted on a bracket having arms connected to the frame at a point in alignment with the wheel axis and extending radially outwardly beyond the periphery of the wheels for pivotal movement in an arcuate path about an axis corresponding to the wheel axis whereby the height of the boom and inclination of the spray nozzles may be adjusted, left and right hand vertically extending spray booms on an attachment releasably mounted on the frame substantially over the wheel axis and inwardly of the wheels, the attachment having arms carrying the vertical spray booms in positions laterally outwardly of the wheels and generally in alignment with the wheel axis, and liquid delivery means for selectively delivering liquid under pressure to the horizontal sray boom and to the vertical spray booms, the liquid delivery means comprising a pump on the body portion of the frame, means for driving the pump on the body portion of the frame, conduit means connecting the pump inlet to the liquid supply tank, further conduit means connecting the pump outlet to the respective spray booms through a manually operable diverter valve.