US Patent 11554605 Chalk line with releasable segments

An apparatus and method for a reel-to-reel chalk line comprising a first housing comprising a first reel, a first rotatable crank mechanism connected to the first reel, and a first chalk bin comprising apertures for allowing the passage of a continuous loadable chalk line. The apparatus further comprises an opposed second housing comprising a second rotatable reel, a second crank mechanism connected to the second reel, and a second chalk bin comprising apertures for allowing passage of the continuous impregnable chalk line. The continuous impregnable chalk line is reeled about the first and second reels as the respective crank mechanisms are alternately rotated forward and backward. The chalk line comprises one or more releasable segments along its length. The releasable segments sever the chalk line when a load on the chalk line exceeds the working capacity of the first and second reels and crank mechanisms within the respective housings.