Drum apparatus

Details Drum apparatus Drum apparatus

1978-09-22

1981-01-13

Franklin, Lawrence R.

Music

Instruments

Drums

84411A, 84419, D17 22, G10D 1302

Patent

active

042442656

ABSTRACT:
Drums have downward and integrally continuously joined truncated conical walls of 3.degree. and then 30.degree. angles. A drum skin is stretched across a large open end and a brace is connected to a smaller open end. A slide moves downward on the brace as controlled by a screw jack, and cables stretched by the slide across idler pulleys on the body pull down a rim to tighten the drum head and tune the drum.

REFERENCES:
patent: 283352 (1883-08-01), McCord
patent: 804347 (1905-11-01), Schultz
patent: 1312771 (1919-08-01), Vogeler
patent: 1356193 (1920-10-01), Danly
patent: 1980876 (1934-11-01), Peters
patent: 3021743 (1962-02-01), Ludwig
patent: 4048895 (1977-09-01), May
patent: 4112807 (1978-09-01), Quibell

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