Can you figure out what this does?

[Ron Nossaman]

> Below, and attached, is a picture of a whippen from a Chickering Bros 
> (ugh) grand. It's the kind with a soft pedal mechanism that raises the 
> hammer rest rail closer to the strings to reduce blow distance.
> 
> Familiar to anyone?

I don't recall seeing one like that, but it appears to be a 
lost motion compensator. Like the one below, only different.

Ron N
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