Three-Position Mute for Bowed String Instruments

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Solution Overview

Problem

Existing mutes for bowed stringed instruments, such as violins, violas, and cellos, are limited to one or two sound palette changes, are difficult to use during performances, prone to rattling or falling off, and often require complex installation or removal, which hinders their practicality and aesthetic appeal.

Innovation Solution

A three-position mute design featuring precision-cut slots and notches that allow for attachment to the instrument bridge in various positions, providing two distinct sound effects and a resting position, secured by frictional contact with the strings, enabling easy manipulation and retention without interfering with the instrument's functionality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a mute is designed to produce multiple sound palette changes, then the range of use is improved, but the device complexity increases

Engineering Contradiction:
Improverange of useVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The mute is divided into multiple discrete positions along the bridge, with each position providing a distinct sound palette change. The bridge receptacle includes multiple notches that segment the continuous bridge surface into discrete stopping positions, allowing the mute to be placed in different locations to achieve different muting effects without requiring complex mechanical mechanisms.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The mute transitions from a static, single-position design to a dynamic, multi-position design. The musician can move the mute along the bridge to different notches during performance, allowing the sound palette to change dynamically throughout the musical piece. This provides versatility without requiring complex active mechanisms, as the mobility is passive and manually controlled.

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If a mute is designed for quick manipulation during performance, then the ease of operation is improved, but the reliability decreases due to risk of falling off

Engineering Contradiction:
Improveease of operationVSAvoidreliability
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The mute utilizes the tension of the instrument strings themselves to secure itself in place. When the mute is placed in a notch on the bridge, the strings press against the mute's legs, creating friction that holds the mute securely without requiring additional fastening mechanisms. This self-securing mechanism allows for quick manipulation during performance while maintaining reliability, as the mute automatically locks into position using the instrument's own string tension.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The notches on the bridge serve as intermediary elements that facilitate both the ease of placement and the security of the mute. These notches provide precise stopping positions that are easy to locate and engage, while also serving as anchoring points that prevent the mute from sliding or falling off during performance. The notches mediate between the musician's manual placement action and the mute's secure retention.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of operation

If a mute is left on the instrument during non-use, then the ease of operation is improved, but the instrument's functionality may be interfered with

Engineering Contradiction:
Improveease of operationVSAvoidobstruction
Core Design Contradiction:
Ease of operationVSObject-generated harmful factors

Solution Approach 1:

The mute can be completely removed from the instrument when not in use, eliminating any potential obstruction or interference with the instrument's functionality. The detachable design allows the musician to take the mute off entirely during passages where it is not needed, ensuring that the instrument performs without any unwanted muting effects. This extraction capability resolves the contradiction by providing the option to eliminate the mute entirely rather than leaving it in a harmful position.

Inventive Principle:
Principle #2Taking out (Extraction)

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 mute offers multiple sound palette changes with ease of use, preventing rattling and obstruction, while being securely retained on the instrument, maintaining the instrument's functionality and aesthetic appeal, accommodating various instrument dimensions and materials.

Implementation Method 1

secured by frictional contact with the strings

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentUS7906716B1Mute for bowed stringed instruments
Publication Date: 2011.03.15 WIESSMEYER PAUL
  • US7906716B1 patent drawing
  • US7906716B1 patent drawing
  • US7906716B1 patent drawing

AI summary

A three-position mute for use with a musical stringed instrument, such mute having an elongated body with two pairs of legs extending therefrom, a slot defined between each pair of legs, a pair of notches defined in the bottom of the elongated body, such notches for engagement with selected strings of the musical instrument in selected modes of use and the slots for engagement on the musical instrument's bridge in a selected mode of use, such modes of use including a bridge engagement position in a first mode of use, a bridge-contacting position in a second mode of use, and a resting position with the mute installed on the strings between the bridge and the tailpiece.