Abstract: Disclosed is a string winding device for a stringed instrument in which the length of the winding shaft can be adjusted freely. The string winding device for a stringed instrument comprises a winding shaft 10 having a first insertion hole 11 inside; a fixed shaft 20, which is inserted into the first insertion hole 11 of the winding shaft 10 in such a way that it is possible to selectively slide along the first insertion hole 11 and having a second insertion hole 21 inside; a worm gear 30 installed at the lower end of the fixed shaft 20; and a fixing means 40, which is arranged in the second insertion hole 21 of the fixed shaft 20 in such a manner that it is possible to selectively release the fixed state of the winding shaft 10 with respect to the fixed shaft 20.

Abstract: Disclosed is a machine head for a guitar. The machine head comprises a clamping section which has a tuning peg and a clamping cap. The tuning peg is defined with a first insertion hole, which extends in a transverse direction and through which a guitar string is inserted, and a second insertion hole, which extends in a longitudinal direction and is communicated with the first insertion hole. The tuning peg is formed on a circumferential outer surface thereof with an externally threaded portion. The clamping cap is formed on a circumferential inner surface thereof with an internally threaded portion and has integrated therewith a clamping member. The clamping member is inserted through the second insertion hole and has a lower end of a semi-spherical configuration.

Abstract: Disclosed is a machine head for a guitar. The machine head comprises a clamping section which has a tuning peg and a clamping cap. The tuning peg is defined with a first insertion hole, which extends in a transverse direction and through which a guitar string is inserted, and a second insertion hole, which extends in a longitudinal direction and is communicated with the first insertion hole. The tuning peg is formed on a circumferential outer surface thereof with an externally threaded portion. The clamping cap is formed on a circumferential inner surface thereof with an internally threaded portion and has integrated therewith a clamping member. The clamping member is inserted through the second insertion hole and has a lower end of a semi-spherical configuration.

Abstract: Disclosed is a guitar string tuning device.

Abstract: A machine head for guitars is disclosed. In the machine head, the tension of a string is adjusted by sequentially rotating a manually operated adjusting knob, a worm engaging with the knob, a worm wheel engaging with the worm, and a winding peg integrated with the worm wheel with the string wound on or unwound from the winding peg. A cap guider is formed on the top end of the winding peg, while a string holding cap is rotatably fitted over the cap guider of the winding peg, thus being brought into a rotatable engagement with the guider. In an embodiment, the guider has upper and lower guide discs integrated at both ends of an eccentric shaft, while the cap has two string insert holes on its sidewall at eccentric positions. When the winding peg is rotated with a string passing through the two string insert holes, the string is firmly jammed at the junction between the eccentric shaft and the sidewall of the string holding cap.