TOGGLE LINK TRIP AND RESET MECHANISM FOR EARTHWORKING TOOL

摘要

TOGGLE LINK TRIP AND RESET MECHANISM FOR EARTHWORKING TOOL: A moldboard plow bottom unit having a frame mount on a beam A standard attached to a moldboard plow bottom is pivotally connected to the frame to provide movement of the moldboard plow bottom from a normal earthworking position to an elevated trip position. A trip and reset mechanism having a toggle link assembly connected to the standard operates to allow the standard and plow bottom to move up to a trip position and to bias the standard and plow bottom to the earthworking position. The trip and reset mechanism includes a control member pivotally mounted on the frame and connected to the toggle link assembly. The control member has first and second members which selectively engage opposite sides of one link of the toggle link assembly to control the movement of the toggle link assembly between its extended over-center position to its folded position. Springs mounted on the frame and connected to the control member yieldably hold the toggle link assembly in the extended over-center position and bias the standard toward the earthworking position.