Music – Instruments – Drums
Patent
1981-01-12
1983-02-15
Franklin, Lawrence R.
Music
Instruments
Drums
84413, G10D 1302
Patent
active
043734197
ABSTRACT:
Drums have a truncated spherical sidewall section formed integrally with a truncated conical sidewall section. The spherical section is one-half to four-fifths the length of the drum body and it curves about a point located 20% to 40% of the distance between the ends of the drum body. The conical section slopes inward 30.degree. to 40.degree. from vertical. A cylindrical sidewall section extends between the spherical section and the end of the drum. A drum head is stretched across an end of the drum body by tightening bolts which extend through slots in a hoop surrounding the head. The bolts have threaded ends which are received in tapped rods rotatably mounted in the curled ends of sheet elements. The bolts pivot about an axis tangential to the drum body. Radially extending portions of the hoop have bent edges adjacent the bolt heads. The slots are formed in portions of the hoop which project toward the end of the drum.
REFERENCES:
patent: 407579 (1889-07-01), Cubley
patent: 2485985 (1949-10-01), Perry
patent: 3029679 (1962-04-01), La Londe
patent: 3747463 (1973-07-01), Hinger
patent: 3818791 (1974-06-01), Zickos
patent: 4244265 (1981-01-01), Tuttrup
Latin Percussion advertisement, .COPYRGT.1974, p. 3, Conga Drum.
Franklin Lawrence R.
Wray James C.
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