Multi-Component Percussion Mallet with Simultaneous Yarn Wrapping
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Solution Overview
Problem
Existing mallet designs for percussion instruments are labor-intensive to manufacture, with layered constructions requiring time-consuming gluing and yarn-wrapping processes, and often limit the range of musical effects and appearances due to single-strand yarn wrapping and limited material variations.
Innovation Solution
A mallet design featuring a shaft with a core and outer layers of different compositions, wrapped simultaneously with multiple yarns of varying types and colors, providing enhanced mechanical properties and aesthetic appeal, and secured with interwoven yarn layers to prevent unraveling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If layered constructions with multiple materials are used, then musical effects and appearances are improved, but manufacturing time and labor intensity increase
Solution Approach 1:
The patent combines multiple yarn wrapping operations into a single simultaneous wrapping process. Multiple yarns of different materials and colors are wrapped around the core in one operation, creating layered constructions with varied musical effects without the time-consuming sequential gluing and wrapping processes of prior art. This merging of operations maintains the versatility of multi-material constructions while dramatically reducing manufacturing time.
2Device complexity
If single-strand yarn wrapping is used, then construction simplicity is maintained, but range of musical effects and appearances is limited
Solution Approach 1:
The patent employs a multi-yarn wrapping system where a single wrapping mechanism can simultaneously incorporate multiple types of yarns (natural fibers, synthetic fibers, combinations) to create diverse musical effects. This universal wrapping approach allows one construction method to produce multiple variations in hardness, resiliency, and appearance, eliminating the need for separate wrapping processes for different yarn types while expanding the range of musical effects.
3Strength
If multiple yarns of different types and colors are wrapped simultaneously, then mechanical properties and appearances are improved, but wrapping complexity increases
Solution Approach 1:
The patent segments the yarn wrapping process into distinct organizational layers, with different yarns positioned at specific locations (e.g., outer layer, inner layer, radial positioning) to achieve desired mechanical properties. This segmentation allows complex multi-yarn constructions to be systematically organized and wrapped in a controlled manner, reducing the practical complexity of simultaneous multi-yarn wrapping by establishing clear structural guidelines for yarn placement and configuration.
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 design allows for simple construction with varied hardness, resiliency, weight, and size, offering distinctive appearances and new mechanical properties, while ensuring the yarn remains securely in place, providing a wider range of musical effects and appearances.
Implementation Method 1
wrapped simultaneously with one or more yarns of the same or different types
Data Source
AI summary
An improved mallet for percussive musical instruments comprises, in one embodiment, a shaft (1100, 1200, etc.), an adapter or inner core (300, 1400), an elastomeric surrounding core (400), and an elastomeric core overlay (1200). Optionally a cover (1300), or optionally two simultaneously-wound layers of yarn or other wrapping material (1705, 1710) are attached over the assembly. The adapter or inner core and the elastomeric surrounding core are formed together in molds (700, 900). Yarns are wrapped either by hand or with the use of a wrapping machine comprising a rotary motive source, a chuck (1810), and wrapping arms (1825, 1830) for interweaving the layers of yarn. In an alternative embodiment the adapter has a through-hole to permit extension of the shaft through the adapter to near the top of the mallet head. Numerous percussive sound effects are achieved by selection of the properties of the adapter or inner core, surrounding core, overlay, and yarn layers.