Just to help clarify:
 
An Imirie shim is essentially the wooden frame portion of a queen excluder
(ie a wooden queen excluder with the metal mesh removed)  with an dado cut
for an entrance notch .   The rest is as Bill Miller stated.  George Imirie
is a long time beekeeper in Maryland.
 
 
>Date:    Sat, 9 Mar 1996 20:38:26 -0500
>From:    Bill Miller <[log in to unmask]>
>Subject: Imirie Shim
>
>Imirie Shims (invented by George Imirie) are wood frames with the outside
>dimensions of a hive body, and about 3/4 inch tall.  A 3/8" by 2" notch is
>cut into one of the narrow sides.
>
>Imirie Shims are used to provide an additional hive entrance during the
>honeyflow, and during requeening by the "nuc" method.   A more detailed
>description of how the Imirie Shim is used is in this year's Brushy Mountain
>catalog, and I believe somebody posted a copy of the description on BEE-L
>last night.
>
>George does not have a computer, but I will be glad to take any comments to
>him if you  wish, and will post his replies.
>
>W. G. Miller
>Gaithersburg, MD
 
David Bernard
Vice President, Maryland State Beekeepers
EAS Master Beekeeper
Damascus,MD
USA