Apparatus for wrapping strings for musical instruments

In apparatus for applying a wrapping wire to a core wire, an elongated track member, a first head mounted toward one end of said track member, a second head mounted for movement lengthwise of said track member toward and away from said first head, means for releasably securing said second head in predetermined fixed position relative to said first head, a shaft rotatably journaled in each of said heads, said shafts facing each other and being in axial alignment, means for rotating said shafts in unison, means on said shafts for connecting the opposite ends of a core wire thereto, means associated with one of said heads for placing the core wire under tension, means for feeding a wrapping wire into contact with the core wire, adjustable means for establishing a predetermined approach angle at which the wrapping wire is fed into contact with the core wire, means for advancing said wrapping wire feeding means lengthwise of said track in timed relation to the formation of convolutions of wrapping wire around the core wire as the latter is rotated, means for applying a predetermined uniform tension to the wrapping wire as it is fed into contact with the core wire, and control means for rotating said shafts through a desired number of revolutions to form a like number of convolutions of wrapping wire on the core wire.