Hammer assist spring ?

[Cy Shuster]

How does this spring assist hammer movement, but still let the hammer at
rest lie in its normal position?  Is there no spring tension until the key
starts to move?

--Cy Shuster--
Rochester, MN

----- Original Message -----
From: "Richard Brekne" <Richard.Brekne@grieg.uib.no>
To: "Pianotech" <pianotech@ptg.org>
Sent: Saturday, June 07, 2003 4:10 AM
Subject: Re: Hammer assist spring ?


> Hey !!
>
> This puppy is actually quite cute !... that spring has a nice combination
> affect of pulling the jack back into place as well. It tensions the jack
> and the shank in opposite directions so to some degree it would work
> together with that springed jack check to improve repetition. Tho it looks
> like the key would need to have enough back weight to fall back quickly
> enough.
>
> Neat action idea.
>
> RicB