Bearings for piano action mechanism employing bushing cloth and

Details Bearings for piano action mechanism employing bushing cloth and Bearings for piano action mechanism employing bushing cloth and

1981-06-15

1983-06-07

Larson, Lowell A.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

291495NM, 264127, 264128, 384125, 384298, 384300, B21D 5310

Patent

active

043864554

ABSTRACT:
A piano action mechanism wherein a shaft pin for rotatably supporting a rotatable member on a flange is carried in bearings formed of bushing cloth glued to the surface of bushing holes in the rotatable member. With a pin inserted through the cylinders of bushing cloth, the assembly is dipped in water, dried, dipped in a solution of resin bonded fluorocarbon solids, again dried and the pin removed, to provide a durable and stable bearing having a low coefficient of friction and which is essentially noise-free and insensitive to changes in temperature and humidity.

REFERENCES:
patent: 2580436 (1952-01-01), Knoblaugh
patent: 2580437 (1952-01-01), Knoblaugh
patent: 2580438 (1952-01-01), Knoblaugh
patent: 2641828 (1953-06-01), Knoblaugh

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