Wörterbuch (en): Half-lap joint / Corner halving joint
de: 
Glattes Eckblatt (nt) / Einfaches Blatt (nt) 
fr: 
Plaque d'angle lisse (f) 
it: 
Foglio angolare liscio (m) 
es: 
Plancha de esquina lisa (f) 
This connection is very simple to make and becomes stable when the beams are additionally reinforced (screws or sheet metal parts).
