Double chamber George Case English

[RogerT]

I've not seen double chamber arrangement like this. 
This one belongs to a client…stuck in its box.

Comments welcome…

Edited December 1 by RogerT

[Geoff Wooff]

Where  are  the  two  sets  of  reeds  then ?  It  looks  more like  a  single  voice  with  closed   inner   chamber......  which  is  not  a  very  unusual  feature  on  a  George Case.

Edited December 1 by Geoff Wooff

[RogerT]

Oops yes you are correct. My mistake. I was confused by the double chamber. I have fixed the thread title. 

Edited December 1 by RogerT

[Paul_Hardy]

Resonant cavities on both sides of the reed plate was common in early concertinas, particularly George Case. I have a couple - see https://pghardy.net/concertina/case_2760/case_2760.html and https://pghardy.net/concertina/case_2420/case_2420.html.

 

Note that the first of those is my favourite 'around the house' concertina - sweet tone, and not strident.

[Richard Mellish]

I've never been convinced that the chambers are resonant at anywhere near the reed frequencies, but insofar as they do have some influence on the sound (maybe mainly on some of the harmonics) it would have seemed logical for the inner reeds to have their own chambers, with holes just like the pad holes on the other side. I wonder whether any maker ever did an A/B comparison or whether they just decided not to bother with the extra work and see whether anyone noticed any difference.

[RogerT]

They must have cost more too. This one has a nice walnut finish, but brass reeds. 

[Stephen Chambers]

2 hours ago, RogerT said:

They must have cost more too. This one has a nice walnut finish, but brass reeds. 

 

"Double Pans" cost "Two Guineas extra" on Lachenal's International Exhibition 1862 pricelist.

 

You wouldn't often see a Lachenal one though, I've only ever come across one, years ago, but it had already been sold to the American Ambassador's daughter... 🙄

[Tiposx]

I tend to agree with Richard Mellish. If double chambers were a great success then the top Wheatsone models would surely have used them? My other observation is that conventional E.C. Or duet concertinas don’t sound very different between pull and push.