Music – Instruments – Stringed
Patent
1984-10-22
1986-09-09
Franklin, Lawrence R.
Music
Instruments
Stringed
84313, G10D 312
Patent
active
046101900
ABSTRACT:
The invention is a pitch raising system for a guitar providing mechanical means to produce musical techniques usually performed manually (tremolo, pitch raising and tremolo of raised pitches). The preferred mode of the system includes a pitch raising device, wear resistant links, wear resistant bridge elements and an upper stop. The E, B and G strings are attached to a pivoting structure pulling it taut horizontally to the surface of the body of the guitar.
The parts of the pitch raising device are each designed so that when assembled, the points of string attachment are adjustable within a single geometric plane with the axis of the pivoting structure. The links are joined to the pivoting structure by U-shaped rods. The U-shaped rods are longitudinally adjusted to tune the strings in relationship with each other for when the device is in raised position. They are then clamped tightly in place. The bridge elements include a high wear resistant rod at the point of string contact. The upper stop blocks the handle of the pitch raising device rather than its pivoting structure.
REFERENCES:
patent: 447689 (1891-03-01), Lenzner
patent: 775327 (1904-11-01), Burchit
patent: 1723767 (1929-08-01), Corwin
patent: 3081662 (1963-03-01), Retter
patent: 3411394 (1968-11-01), Jones
patent: 3990341 (1976-11-01), Pace
patent: 4064780 (1977-12-01), Bond
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