Patent ID: 7946232

Claim:
A planter row unit comprising: a frame; a furrow opener carried by said frame; a pair of wheel arms on opposite sides of said furrow opener, each of said wheel arms having an upper end, a lower end, and a pivotal attachment to said frame located intermediate said upper and lower ends for swinging movement about a generally horizontal, transverse axis; a ground-engaging gauge wheel rotatably attached to said lower end of each wheel arm respectively; a transverse equalizer bar interconnecting said upper ends of said wheel arms; a depth adjustment lever pivotally attached to said frame for swinging movement between any selected one of a plurality of predetermined, releasably latched positions; and a link interconnecting said depth adjustment lever and said equalizer bar for adjustably raising and lowering said gauge wheels relative to said furrow opener when said depth adjustment lever is released and shifted between said latched positions whereby to adjust the depth of said furrow opener, said link being selectively adjustable in length to permit depth calibration of said gauge wheels relative to said furrow opener when said depth adjustment lever is in a latched position.