Patent ID: 7565874

Claim:
A cylindrical frame unit provided in an embroidery sewing machine including a cylinder bed, an X-directional drive mechanism and a Y-directional drive mechanism, the cylindrical frame unit, comprising: a body frame that is connected to the Y-directional drive mechanism and driven in a direction parallel to the cylinder bed; a cylindrical rotary frame that is pivoted on the body frame and having an inner cylindrical surface; a cylinder frame that holds a workpiece and being attachably/detachably attached to the rotary frame; a rotary mechanism that is connected to the X-directional drive mechanism and driven perpendicularly to the direction in which the body frame is driven to rotate the rotary frame and the cylinder frame attached thereto; a position regulating element that slidably contacts an upper surface of the cylinder bed and an upper inner cylindrical surface of the rotary frame; and a mount element that secures the position regulating element to the body frame so as to allow adjustment in vertical positioning of the position regulating element relative to the body frame.