---------------------- multipart/alternative attachment Hello, I am researching the Brown action as featured in Chickering grands and Cocked Hat pianos between the 1850s(?) and 1870s(?). Our shop has rebuilt two 1870's grands with this action; a colleague services an 1860s Chickering with it, but I have yet to accompany him. Additionally, the Boston MFA keyboard collection includes a late 1850's cocked hat piano which I might request to inspect. This action interests me because it seems much less prone to wear and damage than the current model - its drawbacks being a limit on hammer weight made by the spring between the underlever and the jack, and the screw _knuckle_ on the hammer shank, later starring as the drop screw in the "backwards" Chickering shank/flange assembly. The jack, however - like ...Brambach and WurliTzer grands... (and uprights), is full-width and has no front stop against which to jam (and break ;-]). The two Chickerings we rebuilt worked exquisitely within normal parameters of dip and let-off with light hammers. Apparently, the earlier action has skinnier parts though it might have shallower dip as well. Does anyone know the history of this action, in general and specifically to Chickering? I'd like to know if there is a graduation in dip between the early and late actions, and if there is any normal damage apart from environment, misregulation and inappropriate parts. Thanks, Clark Panaccione ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/b0/fe/f8/26/attachment.htm ---------------------- multipart/alternative attachment--
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