Music – Instruments – Drums
Patent
1987-01-12
1989-10-03
Franklin, Lawrence R.
Music
Instruments
Drums
84411R, 84414, G10D 1302
Patent
active
048708836
ABSTRACT:
A tunable shell-less, rimless drum utilizes a multiplicity of tuning assemblies positioned about the frame of a pretensioned or untensioned standard drum head. Each tuning assembly engages the frame and avoids tone impairing deformation of the drum membrane during tuning so as to preserve the natural tonal quality of the drum. A pivotably mounted lever at the bottom of the tuning assembly bears against a tuning band which engages the drum membrane, and cooperating notches on tuning band and lever retain the tuning band in a fixed position relative to the frame to prevent pitch variation or binding due to tuning band movement. A threaded rod slides along a slot in the assembly and threadably engages a lock nut positioned within a nut confinement slot to prevent unwanted loosening of the rod. The invention provides a tunable, compact, lightweight, rimless drum which has tuning convenience and tonal quality superior to most large, heavy shell type drums.
REFERENCES:
patent: 769527 (1904-09-01), Bahr
patent: 2061244 (1936-11-01), Au-Miller
patent: 2331096 (1943-10-01), Strupe
patent: 3186289 (1965-06-01), Kester
patent: 3481239 (1969-12-01), Blumenfeld
patent: 3780613 (1973-12-01), Ludwig
patent: 4079657 (1978-03-01), Sobreira
patent: 4520709 (1985-06-01), Kester
patent: 4549462 (1985-10-01), Hartry et al.
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