초록 ▼

A fully adjustable acoustic guitar bridge is claimed that allows the strings (e.g. nylon or steel) of an acoustic guitar to be separately and continuously intonated, accurately and easily, whenever necessary. The bridge system employs a minimum of alterations to the traditional non-adjustable acoust

A fully adjustable acoustic guitar bridge is claimed that allows the strings (e.g. nylon or steel) of an acoustic guitar to be separately and continuously intonated, accurately and easily, whenever necessary. The bridge system employs a minimum of alterations to the traditional non-adjustable acoustic guitar bridge to retain the acoustic qualities of the instrument. In one embodiment, recessed rear-loaded cap screws utilize the forward and downward pull of the strings to stabilize the adjustable saddles; in another, recessed, front-loaded cap screws utilize a c-clip to stabilize the saddles. A threaded saddle capture on each saddle provides stability, continuous threading capability, and the freedom to use acoustically resonant materials (e.g. bone, phenolic, composites, etc.) for saddles. In one embodiment, the string's downward pressure transmits string vibration to the soundboard; in another, a set-screw assists this transference of sound. In one embodiment, a rosewood shim is employed on acoustic/electric guitars over the internal bridge pickup. The vibration of the saddles on the shim is transmitted to the pickup regardless, if the saddles are located directly over the pickup or not. The system has been tested and is compatible with most bridge pickup systems that are currently on the market. The Rules of 3.3%, 2.1% and 1.4%, which position the nut closer to the bridge, compensate for the design flaw in the "Rule of 18", allowing for any guitar, nylon string acoustic, electric, or steel string acoustic or bass guitar respectively, to achieve accurate intonation at all fret positions (assuming an adjustable bridge and proper fret location). A tempering formula is also enclosed which utilizes specific pitch offsets, which when applied to the guitar, result in extraordinarily pleasing intonation.

대표청구항 ▼

[ We claim:] [1.] The method of tempering an acoustic steel string guitar having a body with a fingerboard and a bridge, a nut located near the end of the fingerboard, a saddle located near to said bridge, strings stretched between said saddle and nut over said fingerboard, and a plurality of frets

[ We claim:] [1.] The method of tempering an acoustic steel string guitar having a body with a fingerboard and a bridge, a nut located near the end of the fingerboard, a saddle located near to said bridge, strings stretched between said saddle and nut over said fingerboard, and a plurality of frets located at designated intervals on said fingerboard between the saddle and nut comprising the following steps:(a) tuning the open E string (5th Octave) to pitch;(b) pressing the string at the 12th fret;(c) comparing the open string pitch with the 12th fret pitch;(d) adjusting the saddle so that 12th fret pitch reads +01 cents on an equal tempered tuner;(e) tuning the open B string (5th octave) to pitch;(f) pressing the string at the 12th fret;(g) comparing the open string pitch with the 12th fret pitch;(h) adjusting the saddle so that the 12th fret pitch reads 00 cents on an equal tempered tuner;(i) tuning the G string (4th octave) to pitch;(j) pressing the string at 12th fret;(k) comparing open string pitch with 12th fret pitch and adjusting the saddle so that the 12th fret pitch reads +02 cents on an equal tempered tuner;(l) tuning the D string (4th octave) to pitch;(m) pressing the string down at the 12th fret;(n) comparing the open string pitch with 12th fret pitch and adjusting the saddle so that 12th fret pitch reads +03 cents on an equal tempered tuner;(o) tuning the A string (4th octave) to pitch;(p) pressing the string at the 12th fret;(q) comparing the open string pitch with 12th fret pitch and adjusting the saddle so that 12th fret pitch reads +05 cents on an equal tempered tuner;(r) tuning the open E string (3rd octave) to 01 cent;(s) pressing the string down at 7th fret;(t) comparing the open string pitch with 7th fret pitch and adjusting the saddle so that 7th fret pitch reads +02 cents on an equal tempered tuner.