"Sobald die Glocke hier erklingt, Die Marke aus dem Kasten springt."

Robbie -- you could also try (with apologies to Burma-Shave):

 "When its bell begins to ring the trademark from this box does spring"

or
 "The trademark of this box comes clear when its bell you start to hear"

Such fun!

Best regards,

Frank Metzger

 [ "If Sublime Harmonie 
 [  is what you crave
 [       Get a
 [       tuba 
 [     Burma-Shave"   ;)    -- Robbie