Morgan & Finnegan LLP
Skip stitch prevention apparatus for sewing machine
 A mechanism for a sewing machine for use in forming stitches by use of a looper thread which is controlled by a looper. This mechanism is adapted so that the looper thread which is run from a thread-thru hole to a stitch forming station is prevented from skipping over a needle penetrating point when a looper is moved upon descending of a needle, whereby stitches are formed without any skip stitch. 
Juki Corporation
D D
D05B D05B
inventional additional
Hitoshi
Ito