A musical instrument tuning lever kit includes a handle with a first axis along its stem and a second axis defined by its grip, with an axial aperture at the distal end. A shaft component extending along a third axis, receivable within the aperture of the stem of the handle, includes means for attachment of a head component. The head has means for attachment to the shaft component at its first end and means for attachment of a tip component at its second end. The tip has a first end with means for attachment to the head component, and a second end with a socket extending along a fourth axis for turning a tuning pin of a musical instrument. The first and second axes define a first plane, the third axis of the shaft and fourth axis of the socket define a second plane angularly orientable to the handle plane.

A fastening structure for fastening a to-be-fastened component to a wooden component by using a screw, wherein the wooden component is made of wood having a specific gravity of 0.08 g/cm.sup.3 to 0.85 g/cm.sup.3 inclusive, the screw has a nominal diameter of 0.8 mm to 3.5 mm inclusive, and the distance between a neutral position in a longitudinal direction of an effective screw part, which is the portion where the wooden component and a male screw part formed in a shaft part of the screw mesh together, and the surface of the wooden component that comes into contact with the to-be-fastened component is 1 mm to 15 mm inclusive.

A fastening structure for fastening a to-be-fastened component to a wooden component by using a screw, wherein the wooden component is made of wood having a specific gravity of 0.08 g/cm.sup.3 to 0.85 g/cm.sup.3 inclusive, the screw has a nominal diameter of 0.8 mm to 3.5 mm inclusive, and the distance between a neutral position in a longitudinal direction of an effective screw part, which is the portion where the wooden component and a male screw part formed in a shaft part of the screw mesh together, and the surface of the wooden component that comes into contact with the to-be-fastened component is 1 mm to 15 mm inclusive.

The invention is a micro-tuning device for pianos and other keyboard-operated stringed musical instruments. A mass is secured to a single string or choir of strings in the musical instrument by an attachment device between the bridge and the agraffe, nut or V-bar, thereby reducing the speaking length and increasing the pitch of the string.

The invention is a micro-tuning device for pianos and other keyboard-operated stringed musical instruments. A mass is secured to a single string or choir of strings in the musical instrument by an attachment device between the bridge and the agraffe, nut or V-bar, thereby reducing the speaking length and increasing the pitch of the string.

A piano tuning retention system includes first and second bushings, each having a threaded upper longitudinal end and a lower longitudinal end that defines a polygonal interior for mating with a polygonal end of a respective piano tuning pin, first and second threaded fasteners corresponding to the threaded upper longitudinal ends of the bushings, first and second sleeves that fit over the bushings, each of the sleeves having an upper longitudinal end with an inward radial extension that defines a reduced inner diameter and a lower longitudinal end that defines a catch (e.g. a notch) extending in a circumferential direction of the sleeve for engagement with a piano string, and a bridge configured to be sandwiched between the threaded fasteners and the inward radial extensions of the sleeves with the bushings disposed within the sleeves and the threaded fasteners fastened to the threaded upper longitudinal ends of the bushings.

An improved piano tuning lever includes a handle with a loop or ring large enough to fit the fingers of a user's hand, thereby providing a grip around the perimeter of the loop or ring which is independent of the axis of the handle. The resulting grip affords improved ergonomics and may lessen stress in the user's wrist and hand when having to conform to various angles of the handle axis as the tuning lever is moved from tuning pin to tuning pin over the course of a piano tuning. The improved handle and loop or ring may be made any size or shape, symmetrical or asymmetrical and with its core being solid, hollow, or filled. Another embodiment of the piano tuning lever includes a spline designed to mate with an inventive piano tuning lever head having complementary splines.

An improved piano tuning lever includes a handle with a loop or ring large enough to fit the fingers of a user's hand, thereby providing a grip around the perimeter of the loop or ring which is independent of the axis of the handle. The resulting grip affords improved ergonomics and may lessen stress in the user's wrist and hand when having to conform to various angles of the handle axis as the tuning lever is moved from tuning pin to tuning pin over the course of a piano tuning. The improved handle and loop or ring may be made any size or shape, symmetrical or asymmetrical and with its core being solid, hollow, or filled. Another embodiment of the piano tuning lever includes a spline designed to mate with an inventive piano tuning lever head having complementary splines.

One embodiment of a humidifier designed to supplement humidity for the purpose of maintaining the moisture content of a wooden instrument such as a guitar. The humidifier comprises of an absorbent material, contained within an expandable outer shell, sealed at both ends. The shell is made from a non-permeable material but is constructed to be permeable. The humidifier is hydrated by submerging it in water, resulting in the absorption of liquid, causing expansion of the absorbent core and consequently expansion of the outer shell. Once hydrated, the outer shell is dried, and then, in the case of a hollow bodied instrument, is placed inside the body, or alternatively, and in the case of a solid bodied instrument, is placed in proximity to the instrument in a case or other enclosure. The shell allows the efficient egress of water vapor while isolating the instrument from liquid sequestered by the absorbent within.

One embodiment of a humidifier designed to supplement humidity for the purpose of maintaining the moisture content of a wooden instrument such as a guitar. The humidifier comprises of an absorbent material, contained within an expandable outer shell, sealed at both ends. The shell is made from a non-permeable material but is constructed to be permeable. The humidifier is hydrated by submerging it in water, resulting in the absorption of liquid, causing expansion of the absorbent core and consequently expansion of the outer shell. Once hydrated, the outer shell is dried, and then, in the case of a hollow bodied instrument, is placed inside the body, or alternatively, and in the case of a solid bodied instrument, is placed in proximity to the instrument in a case or other enclosure. The shell allows the efficient egress of water vapor while isolating the instrument from liquid sequestered by the absorbent within.