Hammer für Klaviere und Verfahren zu dessen Herstellung

A piano forte hammer (10) has an elongated head (12) with a nose (24) defining side surfaces (26), and a felt body (14) disposed to extend about the nose. The felt body has a nose region (15) for contact upon a piano string and first and second tail regions (20, 22) having surfaces affixed in contac...

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Bibliographic Details
Main Author LOMBINO, JAMES M., NEW YORK 10805, US
Format Patent
LanguageGerman
Published 27.10.1994
Edition5
Subjects
ACOUSTICS
MUSICAL INSTRUMENTS
PHYSICS
PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICALINSTRUMENTS WITH ONE OR MORE KEYBOARD
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Summary:A piano forte hammer (10) has an elongated head (12) with a nose (24) defining side surfaces (26), and a felt body (14) disposed to extend about the nose. The felt body has a nose region (15) for contact upon a piano string and first and second tail regions (20, 22) having surfaces affixed in contact upon the head side surfaces. The felt body, in the tail regions only, contains a predetermined measured amount of acrylic copolymer, the felt body nose region being essentially free of the acrylic copolymer. The hammer may be formed by a process including the steps of: providing a first volume of aqueous solution containing the predetermined measured amount of acrylic copolymer in a slot; disposing a first tail region of the felt body, prior to assembly about the nose, in solution in the slot; allowing the felt body to draw essentially all of the solution from the slot, into the first tail region only, by natural wicking action; and repeating the process for the second tail region of the felt body, the nose region being left essentially free of acrylic copolymer.
Bibliography:Application Number: DE19906009291T