Composite line of core and jacket

A composite fishing line comprising a core and braided jacket the core being made of material which will break under a predetermined tensile loading of the line to signal the user that too great a tensile loading exists, said braided jacket being made of a different material which does not break under said predetermined tensile loading and having a braid tightness which grips the core at the break and permits reoccurrent breaks in the core under the reoccurrence of said tensile loading without affecting the utilization of the line.

A composite fishing line comprising a core material to signal the user when too great a tensile loading exists and a braided jacket, said braided jacket being made of a material having an ultimate elongation greater than the elongation of the material of which the core is made, said braided jacket having a tensile strength greater than the tensile strength of the core material and a braid tightness which grips the core at a break produced under a predetermined tensile loading so that upon the reoccurrence of said predetermined tensile loading the core material can break again and again.

A composite fishing line comprising a core, a braided outside jacket and a braided intermediate jacket, the core being made of material which will break under a predetermined tensile loading of the line to signal the user that too great a tensile loading exists, said braided jackets being made of a different material from said core which do not break under said predetermined tensile loading and said outside jacket has a braid tightness which grips the core and intermediate jacket and permits reoccurrent breaks in the core material under the reoccurrence of said tensile loading without affecting the utilization of the line.