Patent ID: 7309824

Claim:
A machine for changing the key of a stringed musical instrument comprising: a quadrilateral shaped mounting base with a means for more securely affixing said mounting base to the general front mid-section of a stringed musical instrument; a generally rectangular shaped housing body that is secured to the top of said mounting base; a plural of elongated control rod assemblies that extend through said housing body and said mounting base; a plural of tuner switch rod assemblies that provide a means for switching between present tunings; a top plate that is attached to the general top center of said housing body to provide a means of retaining said tuner switch rod assemblies; a lever body having a generally rectangular configuration with rounded edges, and a plural of lever arms protruding forward from each side of the rear section of said lever body to a lever handle; a plural of tuner extension features that extend the tuning capabilities of the invention that are located in the rear of said body; a plural of bridge assemblies located in the general front section of the invention that provide an adjustable last contact point for the strings, and corresponding to the number of strings on the stringed musical instrument; and a plural of alternate bridge assemblies that are designed to allow string height and intonation adjustment and may be used instead of said bridge assemblies.