Music – Instruments – Stringed
Patent
1994-02-22
1995-12-05
Dougherty, Thomas M.
Music
Instruments
Stringed
84305, G10C 310, G10D 314
Patent
active
054719020
ABSTRACT:
A system for tuning a piano or a similar instrument comprises a metal assembly 44 or unit 50, preferably cast iron, composite, zinc or alloy material containing lubricating elements, and tuning pins 10. The pin 10 may have a recessed portion 14 surrounded by a sleeve 30 preferably of bronze or brass to assist and protect the pin when being tuned. The pin 10 has a radial head 12 which seats into a complementary radial bore 31 within aperture 26 allows the pin 10 to rotate about and swivel across its axis 24. The pin 10 and sleeve 30 are held in the assembly 44 or unit 50 under compression from lockscrew 34 bearing down upon the flat head 32 of the pin with the pin pivoting on curved end 38 of the lockscrew 34. The tuning end is free to move within the aperture clearance 33. The tuning system can be provided either as an individual self contained pin 10, sleeve 30 and lockscrew 34 in an assembly 44, or one or more blocks or sectioned units 50 of said pins, which are mounted to the piano frame preferably from the rear by means of one or more screw threaded lugs 27.
REFERENCES:
patent: 514976 (1894-02-01), Weber
patent: 1924720 (1933-08-01), Kringel
David Wexler and Co. 1965-1966 Catalog p. 450.
Athenry Enterprises Limited
Dougherty Thomas M.
Schindler Edwin D.
Spyrou Cassandra C.
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