Patent ID: 8288637
Filing Date: 2012-10-16
Classification: G10D

Abstract:
1. A spring corded musical instrument capable of adjusting the pitch of the strings by the use of a string torsion control means allowing a player easy adjustment of the pitch of the guitar while playing comprising: a musical instrument having a neck and a body with a plurality of strings having one end of each of said plurality of strings attached at the distal end of the neck; a string torsion block mounted at the base of the body having a plurality of torsion control rods corresponding to the number of strings, said torsion control rods being fixedly mounted to the torsion block at their respective proximal ends and their distal ends extending toward the neck in parallel alignment one to the other; a floating bridge interposed between the plurality of strings and the corresponding plurality of torsion control rods including a corresponding plurality of hollow tuning cylinders fixedly connected at one end to each of the respective strings and having concentric slots in the other end for accepting the free ends of the torsion control rods; a foot pedal for controlling the movement of a foot pedal cable connecting to a tuning control bar attached to said floating bridge; said floating bridge capable of motion responsive to the depression and release of the foot pedal effected by the foot pedal cable drawing the floating bridge toward or pushing the floating bridge away from the torsion block causing the tuning cylinders within the floating bridge to follow the helical twists of the torsion control rods such that the tuning cylinders rotate resulting in the increase and decrease of torsion force on the strings attached to the respective tuning cylinders uniformly changing the pitch of the strings.