Add to ORKGPatent for a new and improved cultivator. This design consists in "[t]he combination . . . of the main frame and plow or plows, curved plate slotted and perforated . . . and rigidly secured to said frame, a horizontal lever passing through the slot of the same and pivoted to the main frame, a spring-bolt and operating devices, a vertical bar pivotally suspended from said lever, and a carrying-wheel having one of its spindles bearing in the lower end of the bar, together with a depending bar secured rigidly to the frame and having a pivotal depending link" (lines 1-12)