Extraction Apparatus

An extraction apparatus ( 20) for a cutting machine (10). The extraction apparatus (20) comprises first and second portions (21， 22) rotatable one relative to the other for angular movement between two opposed positions. A slidable coupling (27) defines a fluid flow path (29) for fluid communication between the first and second portions (21， 22) during said angular movement between the two opposed positions， whereby fluid can flow from the interior (45) of the first portion (21) into the second portion (22). The slidable coupling (27) comprises first and second coupling sections (61， 62) slidable one with respect to the other. The second coupling section (62) is hollow to define an open interior (63). The first coupling section (61) defines a duct (65) opening onto the interior (63) of the second coupling section (62)， whereby the duct (65) and the interior (63) of the second coupling section (62) cooperate to define the fluid flow path (29).