Abstract: An agricultural sprayer includes a spray boom equipped with a plurality of spray heads, with each head having a body defining a cavity located in fluid communication with a fluid inlet and an array of four outlets leading to four nozzles respectively having different flow rates. A nozzle-select control member is mounted for rotation in the cavity and includes a fluid passage arrangement for establishing fluid connections between the inlet and different ones or combinations of the four nozzles as the control member is rotated among preselected discrete positions by an electric stepper motor, with the stepper motor being controlled in response to vehicle speed so that the spray tip capacity decreases for effecting a constant application rate as the vehicle speed decreases from a maximum permitted speed.

Abstract: A boom structure for a mobile agricultural implement. The boom structure includes a first transversely extending beam member having a first protrusion. The boom structure includes a second transversely extending beam member having a second protrusion. The second transversely extending beam member is spatially offset from the first transversely extending beam member. A plurality of first coupling members are coupled to the first protrusion and a plurality of second coupling members coupled to the second protrusion. A plurality of connecting members are coupled to the first and second coupling members to connect the first and second transversely extending beam members.

Abstract: An activating portion on one section of an adjustable wheel assembly triggers a proximity switch on a vehicle such as a field sprayer to provide a signal indicative of wheel tread. The signal is sent to a controller which controls wheel tread adjustment. Two or more assemblies may be adjusted simultaneously reduce. adjustment time. The operator control is located in the vehicle cab for entering wheel spacings, providing an indication of the actual spacing and individual wheel position, and providing error and warning messages. An interlock system prevents axle telescoping unless certain vehicle conditions are satisfied, such as the vehicle speed being below a preselected point and vehicle being in the field mode.