1. Field of Invention
This invention relates to the stringed musical instrument properly known as the banjo.
2. Description of Prior Art
The major components of a banjo rim assembly (circular part of banjo) are 1. head (skin or plastic) 2. tone ring (metal) 3. shell (usually wood): “Mitchel's Tone Ring Mate” (
Banjos Typically are of Two Types:
Installing “Mitchel's Tone Ring Mate” on the (original) raised head ring converts the (original) raised head ring to a flat head.
Previous conversions either eliminated the original ring or didn't sit inside and firmly on the flat inside surface of the original raised head ring; thus utilizing the pre-war material of the (original) raised head ring.
In relationship to the (original) raised head tone ring (as seen in FIG. (2)), “Mitchel's Tone Ring Mate” sits in the open cavity of the (original) raised head tone ring. The bottom's diameter, measuring at 10.825, rests on the inside bottom of (original) raised head tone ring setting against the inside of the (original) raised head tone ring with a diameter of 9.950. The outside diameter being 10.992 and setting on the outside skirt of (original) raised head tone ring, running perpendicular to the (original) raised head tone ring with a radius of 0.060 and a theoretical diameter of 10.800.
In reference to the 51° angle of the “Mitchel's Tone Ring Mate”, it starts at the 10.8 and goes to the 9.950 then back to the 0.340, has a height of 0.025 above the (original) raised head tone ring, thus forming a flat head tone ring conversion utilizing the (original) raised head tone ring with “Mitchel's Tone Ring Mate”.
With “Mitchel's Tone Ring Mate”, as shown in drawing (
| Number | Name | Date | Kind |
|---|---|---|---|
| 443159 | Bradbury | Dec 1890 | A |
| 443510 | Fairbanks | Dec 1890 | A |
| 1437982 | Luckett | Dec 1922 | A |
| 1512766 | Houdlett | Oct 1924 | A |
| 1724629 | Williamson | Aug 1929 | A |
| 3677125 | Oliver | Jul 1972 | A |
| 3921492 | Stelling | Nov 1975 | A |
| 4226159 | Lowe | Oct 1980 | A |
| 4483234 | Snavely | Nov 1984 | A |
| 4852446 | Kennedy | Aug 1989 | A |
| 5355756 | Geiger | Oct 1994 | A |
| 20050223870 | Passafiume | Oct 2005 | A1 |
| Number | Date | Country | |
|---|---|---|---|
| 20080257129 A1 | Oct 2008 | US |