[pianotech] can anyone identify this hardware?

[David Nereson]

Some old uprights had a lock lever to lock the muffler or "mandolin" (also
known as "rinky-tink") pedal (middle pedal) "on."
--David Nereson, RPT

On Tue, Oct 18, 2011 at 3:27 PM, Mark Potter
<bases-loaded76 at sbcglobal.net>wrote:

> From an 1884 Vose & Sons upright.  Attaches under the keybed - one at each
> end (see closed position photo) .  Each pivots outward to extend beyond
> keybed (open position photo).  Does anyone know what purpose these serve?  I
> can't conjure up a decent guess...
>
> Mark Potter
>
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