Modular work trimmer for a sewing machine

A work trimmer module for a sewing machine having a driving arm shaft within a hollow bracket arm which extends above the bed of the machine and includes an opening at the rear of the machine permitting access to the arm shaft, said module comprising a frame securable to the machine and including an opening which communicates with the opening in the arm when the frame is secured thereon, a split eccentric securable on the arm shaft, a split bearing securable about the eccentric, a member reciprocable by said bearing during rotation of the arm shaft and operable through the said openings, linkage means mounted on the frame outside said bracket arm and removably connected with said reciprocable link, a trimmer knife carrier operably connected with said linkage means for movement thereby at least at times in response to the reciprocation of said reciprocable link, and a knife actuable by said carrier.