Schatz　linkage　has　been　applied　as　a　main　component　in　a　mixed　machine　＇Turbula.＇　To　further　understand　this　mechanism,　the　structure　analysis　and　modeling　of　the　Schatz　linkage　in　＇Turbula＇　is　given.　From　the　analysis　and　modeling,　a　novel　type　of　Schatz　linkage　is　designed　and　the　parameter　conditions　are　modified,　which　can　be　regarded　as　a　variant　of　Schatz　mechanism.　It　can　further　extend　the　key　linkage　selection　of　mixed　machines.　©　2013　Springer-Verlag.