Music – Instruments – Stringed
Patent
1988-08-22
1990-05-29
Franklin, Lawrence R.
Music
Instruments
Stringed
G10D 312
Patent
active
049285645
ABSTRACT:
An apparatus and method of fine tuning an electric guitar having a plurality of guitar strings, a tremolo system including a bridge plate assembly having a pivotal connection to the guitar body and connected to each of said guitar strings, a tremolo arm connected to said bridge assembly for movement thereof about said pivotal connection, a bridge lever arm or sustain block on said bridge assembly extending into a cavity on the bottom face of said guitar and counterbalance springs connected to said guitar body in said cavity and connected to said lever arm of the bridge assembly and a tremolo control and stabilizer connected at one end to said guitar body and at the other end to said bridge plate assembly lever arm, said stabilizer including a composite spring means under compression and an adjustable nut for varying the compression of the composite spring. A method of stabilizing a neutral position of a tremolo system including a pivoted bridge assembly including the steps of tensioning all of the strings of a guitar to a selected pitch slightly less than a desired pitch, tensioning certain counter-balance springs connected between said bridge assembly and the guitar body to oppose the string tension, and mechanically adjusting a certain counter-balance spring to bring the tension in the guitar strings to a desired pitch whereby said mechanical adjustment provides a mechanical stop for returning all of the guitar strings to a selected pre-tuned pitch.
REFERENCES:
patent: 3241418 (1966-03-01), Fender
patent: 3326072 (1967-06-01), Price
patent: 4656916 (1987-04-01), Gressett
patent: 4823669 (1989-04-01), Sarricola
Borisoff Boris
Borisoff David J.
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