US Patent 7939738 Ligature for woodwind instruments

A ligature is provided for use in a mouthpiece system for attaching a reed to a mouthpiece of a woodwind musical instrument. The ligature is constructed from a single layer of flexible strap of rubberized fabric, having two ends to which rigid bars are fixedly secured. The ends of the straps and rigid bars are brought together to form a loop that is placed over the mouthpiece and reed. A threaded closure mechanism is used to tighten the ligature around the mouthpiece. The ends of the strap are crimped into slots in the rigid bars to secure the masses to rigid bars. A cradle constructed from a rectangular piece of spring steel is attached to the flexible strap and is located on the interior of the loop to contact the reed along two lines.