Percussion instrument in the nature of a drum

Details Percussion instrument in the nature of a drum Percussion instrument in the nature of a drum

1989-04-10

1990-03-20

Franklin, Lawrence R.

Music

Instruments

Drums

84413, G10D 1302

Patent

active

049091255

ABSTRACT:
A percussion instrument in the nature of a drum is disclosed having a shell-like body and a pair of elastic top and bottom drum heads. A hoop is provided to stretch the top drum head across the top of the drum body and a stretching wheel is provided for stretching the bottom drum head across the bottom of the drum body. The top and bottom drum heads vibrate at a pitch level proportional to the tension produced in each drum head. The stretching wheel is rotatably mounted on the top end of a shaft positioned below the drum body. A coupling wheel is threadably engaged to the shaft and is peripherally connected to the hoop by a set of elongated tension rods. Rotation of the percussion instrument on the shaft causes the rods to exert a downward force on the hoop and concurrently therewith produce an upward reactive force at the top of the shaft on the stretching wheel to simultaneously stretch the top and bottom drum heads across the top and bottom of the body, and thereby to simultaneously adjust the pitch level in each of the top and bottom drum heads.

REFERENCES:
patent: 2706925 (1955-04-01), Fendlason
patent: 4570526 (1986-02-01), Horshino
Remo, Inc., Drums, Percussion & Accessories/1988.

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