Device for altering the effective mass of a stringed instrument

Details Device for altering the effective mass of a stringed instrument Device for altering the effective mass of a stringed instrument

1996-12-27

1999-03-30

Spyrou, Cassandra C.

Music

Accessories

84327, 84279, G10G 300

Patent

active

058892222

ABSTRACT:
A device for altering the effective mass of a stringed instrument employs a movable mass such as an adjustable calibrated weight affixed to an accessory or member on the body of the instrument. The adjustable weight is a known weight and in the form of a movable mass clamp that can be externally mounted on the endpin of a cello or bass. The adjustable weight can be a "C" shaped body or a split collar style body with either one employing a threaded fastener to hold the body on the endpin. A variation encompasses a mounted adjustable weight in the form of a clamp affixed to some portion of an instrument. The clamp has a flexible interface or pad between the clamp and the instrument. A series of varying weights can be selected to be applied to the clamp. Another variation employs the endbutton on a violin. The endbutton has an opening disposed therethrough with threads provided therein. From a series of pins having threads disposed thereon, a pin is selected and is threadably engaged with the endbutton to place a selected mass inside the body of the violin. A friction fit may be used in lieu of threads. The pins can be tapered with the head of each pin having either a recessed socket or a raised cross bar to facilitate turning the pin into engagement with the endbutton. Consequently, due to the placement of a selectable mass in a selected position on a member on the body of a stringed instrument, the tone and feel can be more effectively and repeatably controlled.

REFERENCES:
patent: 3636809 (1972-01-01), Ezaki
patent: 4493238 (1985-01-01), Ricci

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