Eierschalensollbruchstellenverursacher - DW - 09/12/2011
Quite simply, an "Eierschalensollbruchstellenverursacher" is used to crack the shell of a boiled egg. Admittedly, they're not as common in Germany as they should be, since soft-boiled eggs served in an egg cup with a mini egg spoon, are an essential part of a traditional German breakfast. People who haven't had a second cup of coffee, however, can be excused for cracking their eggs with spoons rather than trying to ask for the "Eierschalensollbruchstellenverursacher." Though dropping a weight onto an egg remains something everyone should try at least once.
I remember the first time I saw something like this device on Iron Chef. It was a smaller spring-loaded operation instead of this gravity type. Maybe that's the French version? It was the French Iron Chef iirc.