There is a short article written by Susan Cobey at

www.beekeeping.co.nz/info/cloake.htm

describing Harry Cloake's method of queenrearing.

> When it must be impressed upon the bees that they have no queen, the
> bottom chamber is turned 180 degrees and a tin plate inserted into
> the rim.

I'd note that this manipulation (the actual turning of the floor end for
end) only happens the one time when you're initially setting up the colony
for cellraising.  After that, the actual disturbance of the colony is even
less intrusive...

Nick Wallingford
Tauranga, New Zealand