In message ,
TheScullster writes
Hi all

Just puzzled by the shape of my 1970s cistern.
I am re-furbing a downstairs toilet and noticed that the existing cistern
has a kind of curved cut-out in the back at the top left hand side.
This can be clearly seen in the picture below:

http://home.freeuk.com/thesculls/Cistern-Plan.JPG

There is no corresponding protrusion in the lid to cover this.

Anyone got any idea what the purpose of this profile might be?

TIA

Phil



My Villeroy & Bosch cistern has this and it's used for bringing a hidden
pipe (buried in the wall) into the cistern. There's a stop valve
attached to the in-wall pipe with the filling mechanism hanging on it.
--
Regards
Phil Morris