Method of making a wound musical instrument string
AssigneeNational Musical String Company
InventorsW. Norman Stone, Alfred S. Falcone
Life of this patent
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Abstract
A method for making a wound musical instrument string having improved tone quality and life involves the winding of a cover wire onto a core wire followed by a thermal conditioning step in which the string is heated to an elevated temperature for a significant period of time.
Claims9
The method for improving a wound musical instrument string of the type comprising a core wire and a cover wire helically wrapped around said core wire, said method comprising the step of heating said string to an elevated temperature for a substantial amount of time, said elevated temperature being of such degree and said amount of time being of such duration as to relieve residual stresses in said cover wire caused by the wrapping of said cover wire onto said core wire.
The method for improving a wound musical instrument string of the type comprising a core wire and a cover wire of greater coefficient of linear expansion than said core wire wrapped around said core wire, said method comprising the step of heating said string to an elevated temperature for a period of time until the convolutions of said cover wire assume a more regular spacing relative to one another along the length of said core wire.
The method of making a wound musical instrument string, said method comprising the steps of:
- providing a core wire, helically wrapping a cover wire at room temperature around said core wire to produce a partially complete string, heating said partially complete string to an elevated temperature for a substantial amount of time as appropriate for the material of said cover wire to relieve residual stresses in said cover wire caused by the wrapping of said cover wire onto said core wire, and thereafter cooling said string to room temperature.
The method of making a wound musical instrument string, said method comprising the steps of:
- providing a core wire, providing a cover wire having a coefficient of linear thermal expansion greater than that of said core wire, helically wrapping said cover wire around said core wire at room temperature to produce a partially complete string, heating said partially complete string to an elevated temperature for a period of time until the convolutions of said cover wire assume a more regular spacing relative to one another along the length of said core wire, and thereafter cooling said string to room temperature.
Dependencies are inferred from the claim text.