Lyon & Healy patented such a devise many years ago. I am not aware of
them building any.
Also this would cost more, and levers that work already cost too much.
On Sat, 25 Jan 1997, Tacye Phillipson wrote:
> On Sat, 25 Jan 1997 JSingerFam@aol.com wrote:
>
> > By actuating a lever, you are shortening the string, and therefore the pitch
> > of the string will rise usually 1/2 step, i.e. from F to F#.
>
> Why don't we have double action lever/blade harps? The position of the
> natural lever would affect the pitch of the sharp string, but probably
> only slightly. The levers would have to be on opposite sides of the
> string and could probably be linked so one switch opperated both.
>
> Tacye A creative mess is better than tidy idleness
> tep20@cam.ac.uk
>
>