The Westley Richards patent detachable barrel system used two locking lugs on the barrel instead of threads. These lugs locked into recesses inside the reinforced teceiver ring. A quarter turn freed the barrel to be pulled straight out of the receiver. A small lever locked the barrel in and kept it from turning. Westley Richard’s take down system from about 1900 closely resembles a German 1880 design by Guenther & Hemming , DRPatent No. 12114. This system was frequently used by the Suhl gunmakers Schmidt & Habermann on their target rifles.