Lubrication device for a lockstitch looper of a sewing machine

摘要

Lubrication device (120) for a double lockstitch gripper (24) with a computer control (17) for performing a sewing process, sewing stitches carried out in the computer control (17) being stored and compared as the actual number of stitches with a preset desired number of stitches. If the target and actual number of stitches are the same, the computer control (17) initiates the output of a control signal to the lubrication device (120) in order to carry out the lubrication process on the lockstitch gripper (24). According to the invention, the quantity of lubricant to be supplied is metered by the frequency of the periodic repetition of the lubrication process.