Piano hammer shaping tool

Details Piano hammer shaping tool Piano hammer shaping tool

1999-02-23

2000-02-08

Nappi, Robert E.

Music

Accessories

Tuning devices

84453, 84459, 451 59, 451523, 451539, G10G 700

Patent

active

060230150

ABSTRACT:
A hammer shaping tool is designed with two parts: a piano hammer template and a sanding strip. The template's face surface is a mirror of an desirably shaped piano hammer with side walls forming a channel along the face surface of the template. The width of the face surface, and consequently the channel, is generally the same as the width of the striking edge of the hammers. The sanding strip likewise has the same width as the striking edge of the hammers. The sanding strip is placed, cutting side against the hammer, on the striking edge of the hammer. The template is then placed against the low friction side of the sanding strip and a portion of the hammer. The sanding strip is pulled through the template channel, the low friction side of the sanding strip sliding against the face surface of the template, and the cutting surface of the sanding strip engaging the surface face of the piano hammer, cutting the hammer facing surface to the desired shape. The strip and guide can then be placed on another portion of the hammer and the process repeated, eventually shaping the entire hammer. The amount of pressure exerted on the tool against the hammer shoulders in conjunction with the sandpaper grit size dictates the amount of felt removed from the hammer.

REFERENCES:
patent: 696025 (1902-03-01), Finney
patent: 1165452 (1915-12-01), Rudolph
patent: 1344318 (1920-06-01), Slye et al.
patent: 1570177 (1926-01-01), Pointer
patent: 4206574 (1980-06-01), Dotsko
patent: 4563152 (1986-01-01), McClure
patent: 4823515 (1989-04-01), Blome
patent: 5140784 (1992-08-01), Walsh
patent: 5148639 (1992-09-01), Sakai et al.

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