Stave Drum Dovetail Joints Eliminate Glue Dampening
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Solution Overview
Problem
Conventional stave percussion drums with glued joints suffer from sound dampening and interference with resonance due to glue strips, resulting in a lesser quality sound.
Innovation Solution
The staves are held together using dovetail joints or similar wood joints instead of glue, and are cut with radiused inner and outer surfaces to form a smooth cylindrical shape without the need for lathe turning, eliminating the requirement for glued joints and reinforcing hoops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If glue is used to join staves together, then the manufacturing process is simplified, but the sound quality deteriorates due to sound dampening and interference with resonance
Solution Approach 1:
The patent removes the harmful element (glue) from the stave joining process entirely. Instead of using adhesive bonds, the invention employs mechanical interlocking through dovetail joints and wooden fasteners, completely extracting the sound-dampening glue from the system while maintaining structural integrity.
Solution Approach 2:
The patent replaces the chemical bonding mechanism (glue) with a mechanical joining system consisting of dovetail joints and wooden fasteners. This substitution eliminates the need for adhesive materials and uses purely mechanical means to secure the staves together, thereby preventing sound dampening.
2Ease of manufacture
If staves are assembled with flat surfaces, then manufacturing is easier, but additional lathe turning is required to achieve smooth circular cross-sections
Solution Approach 1:
The patent applies preliminary shaping to the stave surfaces before assembly. The inner and outer surfaces of the staves are pre-formed with radiused contours that match the final cylindrical shape, so that when assembled, the drum achieves its smooth circular cross-section without requiring subsequent lathe turning operations.
3Strength
If traditional drum construction with reinforcing hoops is used, then structural strength is improved, but device complexity and manufacturing steps increase
Solution Approach 1:
The patent removes the reinforcing hoops from the drum construction, eliminating an entire component system. The combination of dovetail joints and the tensioning system provides sufficient structural strength without the need for additional reinforcing elements, thereby simplifying the overall device.
Data Source
AI summary
A percussion drum including a plurality of vertical staves held together by mechanically interlocking joints on the side edges of the staves.