Musical Instrument String Flexing for Faster Playing-In

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Solution Overview

Problem

The process of playing-in musical instrument strings, which involves seating wires or bands around a core to achieve stable sound and quality, is time-consuming and inefficient.

Innovation Solution

A method and apparatus that incorporate a flexing process during the production or winding of musical instrument strings, using a string tensioning device and flexing device to clamp and bend the strings, thereby accelerating the achievement of a stable musical quality and sound.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a traditional playing-in process is used to seat wires and bands around the core, then the desired stable sound and musical quality are achieved, but the process becomes time-consuming

Engineering Contradiction:
Improvestable sound qualityVSAvoidplaying-in time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by performing the flexing process during the string production and winding process itself, rather than after the string is installed on the instrument. The flexing device bends the string back and forth multiple times while the wire/band layers are being wound around the core, pre-seating the layers in their stable configuration before the string is even installed on the musical instrument. This eliminates the need for extended playing-in time after installation.

Inventive Principle:
Principle #10Preliminary action

2Reliability

If the flexing process is performed after winding the last layer, then the wire layers are properly seated, but the surface of the string requires subsequent grinding

Engineering Contradiction:
Improvewire seating stabilityVSAvoidsurface finishing process
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The flexing process is performed as a preliminary action during the winding process itself, specifically after each layer is wound or after the last layer is wound. This preliminary flexing seats the wire layers in their stable configuration before the string leaves the production line, eliminating the need for subsequent grinding operations to achieve proper wire seating and surface finish.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If multiple passes of flexing are performed during production, then the wire layers are thoroughly seated, but the production process becomes more complex

Engineering Contradiction:
Improvelayer alignmentVSAvoidflexing process complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges the flexing process with the existing winding process by integrating a flexing device into the production line. The flexing device is positioned to act on the string immediately after each layer is wound or after the last layer is wound, combining two operations (winding and flexing) into a single integrated production sequence. This eliminates the need for separate, complex multi-pass flexing operations after production.

Inventive Principle:
Principle #5Merging (Combining)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The flexing process effectively aligns and seats the wires or bands, significantly reducing the time required to achieve the desired musical quality and sound, enhancing the efficiency of the playing-in process.

Implementation Method 1

a flexing process on the musical instrument string already during the production as an integrated part of the production or winding process

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 2

a string tensioning device for clamping a musical instrument string between two points with a predefined fixed or variable pull force in the longitudinal direction of the string to keep it taut

Methodology Applied
Scientific EffectTension force: Tension

Data Source

PatentUS11361738B2Method and apparatus for artificial playing-in of a musical instrument string and method and apparatus for producing a musical instrument string
Publication Date: 2022.06.14 LARSEN STRINGS
  • US11361738B2 patent drawing
  • US11361738B2 patent drawing
  • US11361738B2 patent drawing

AI summary

Method for artificial playing-in of a musical instrument string comprising one or more layers of wire(s) and/or band(s) wound around a core, in which the method comprises use of a flexing process on the musical instrument string during the production or after the winding of the last layer on the musical instrument string, but preferably before grinding of the surface of the musical instrument string, apparatus for artificial playing in a musical instrument string comprising one or more layers of wire(s) and/or band(s) wound around a core, in which said apparatus comprises a string tensioning device for clamping a musical instrument string between two points with a predefined fixed or variable pull force in its longitudinal direction to keep it taut, and a flexing device used during production of a musical instrument string.