Patent ID: 7578356
Filing Date: 2009-08-25
Classification: A01B

Abstract:
1. A disc harrow for tilling ground comprising: a mainframe having a pair of rails; a plurality of transverse supports connected to said pair of rails along the length of said rails; a disc frame including a gang assembly; said disc frame having a plurality of discs mounted to a disc support beam; said mainframe having a subframe; wherein said subframe having a rockshaft; said rockshaft having a strut rigidly attached to said rockshaft; said disc support beam having a support arm; said strut attached to said support arm; wherein said disc support beam is raised and lowered by rotating the rockshaft; said strut includes a carrier bracket interconnected between said rockshaft and said disc frame; said carrier bracket having an elongated slot; a mounting lug inner connected between said strut and said disc frame; said carrier bracket having a carrier bracket arm; a shock absorber coupled to said carrier bracket arm extending downwardly thereon and engaged with said mounting lug; a spring wherein said shock absorber extends concentrically through said spring; said mounting lug includes a guide pin; said guide pin moves vertically within said slot; wherein said disc gang floats in response to an encountered ground variation along only a single axis; wherein said guide pin moves vertically within the slot allowing said disc gang not to oscillate fore and aft when ground variations are encountered.