Music – Instruments – Stringed
Patent
1981-07-13
1983-10-11
Franklin, Lawrence R.
Music
Instruments
Stringed
84297R, 84298, 84304, 84314N, G10D 304, G10D 312
Patent
active
044085150
ABSTRACT:
A kit for converting a single-stringed instrument to a double-stringed instrument including a unique combined bridge/tuning mechanism (50) which replaces the bridge assembly of the single-stringed instrument. The combined bridge/tuning mechanism (50) includes a bridge assembly over which both the original strings (20) and the additional strings (40) pass, and an integrally mounted tuning assembly (54) for adjusting the tension in (i.e., tuning) the additional strings. The bridge/tuning mechanism (50) includes a base or mounting plate (60) from one end of which perpendicularly extends a flange (62). The tuning keys (86) which comprise the tuning assembly (54) are pivotally mounted to the upper end of the flange (62), the additional strings (40) passing through apertures (68) formed in the flange (62). The flange (62) also serves as a means for terminating one end of the original strings (20) whose other ends are terminated in other tuning keys (18) located, for example, on the head (16) of the instrument. The bridge assembly (52 ) preferably includes independently movable and adjustable drums (102) which are mounted between the flange (62) and base plate (60) and include dual groove means for accommodating both the original and additional strings. The remaining portions of the kit include anchor means adapted to be mounted on the head (16) of the instrument for terminating the other ends of the additional strings, and a modified nut (28) which includes additional grooves (30) for accommodating the additional strings.
The combined bridge/tuning mechanism (50) may, of course, be utilized as original equipment in the manufacture of either a double-stringed instrument or a single-stringed instrument, as may be desired.
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patent: 4031799 (1977-06-01), Fender
Kramer Guitar Corporation, Inc. 8 String Bass.
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