Patent ID: 8215250
Filing Date: 2012-07-10
Classification: D05B

Abstract:
1. A needle plate disposed on an upper surface of a sewing machine bed of a sewing machine having a horizontal hook mechanism inside the sewing machine bed, the needle plate comprising: a first needle plate fixed to the sewing machine bed and formed with a needle hole through which a needle is configured to pass and a rectangular hole through which a feed dog that is configured to feed a workpiece cloth appears; a second needle plate disposed in front of the first needle plate and above the horizontal hook mechanism, the second needle plate being detachably attached to the first needle plate; an engagement mechanism sliding the second needle plate rearward from a front side of the first needle plate, thereby engaging the second needle plate with the first needle plate; and a disengagement operating member provided on the second needle plate, the disengagement operating member being configured to cancel the engagement by the engagement mechanism, the disengagement operating member being moved frontward from a rear side of the first needle plate thereby to cancel the engagement by the engagement mechanism, wherein the engagement mechanism includes: