Patent ID: 6044637
Filing Date: 2000-04-04
Classification: A01D

Abstract:
A bedknife adjustment linkage for a cutting unit having a frame, reel and bedknife, comprising:a shiftable support that supports the bedknife and is shiftably coupled with the cutting unit,an elongate member coupled with the support by way of a connection device,an adjustment member coupled with the elongate member in operative abutment with a first brace coupled with the cutting unit frame, said adjustment member being shiftable along the elongate member for adjusting the position of the elongate member relative to the cutting unit frame to thereby adjust the position of the bed knife;a compression spring operatively engaged between the support and the first brace bracket, the compression spring being positioned to bias a cutting edge of the bedknife in a direction toward the reel, and a force applied to the linkage by the compression spring operatively eliminates play that may be present in the connection device and between the adjustment member, elongate member and first brace,wherein the elongate member is a threaded rod and the adjustment member includes a threaded opening within which is received the elongate member, the adjustment member being rotatable for adjusting the position of the threaded rod with respect to the first brace to thereby adjust the position of the bedknife, anda nut within which the threaded rod is positioned, said nut being rotatable for shifting into operative abutment with the compression spring for further compressing the compression spring to such an extent that the compression spring operatively disengages the first brace and ceases to operatively apply force to the first brace.