Hum, well that brings on more talk. But I am not aware of any cross-sourcing/collaboration of technology between Büchsenmacher Karl Leberecht(1848-1933) in Amberg and Meffert/Forstmeister Lebrecht. Leberecht had the >>Hahnlose Selbstspannerflinte<< along with the >>IDEAL-Drilling-Sicherung<<, where French and German technology collided. Leberecht had DRP # 257748 in 1913 for „Umstellvorrichtung für Jagdgewehre mit Stechabzug“.
The spelling of Forstmeister Lebrecht and Büchsenmacher Leberecht may be the differentiating factor?? But very odd that it all gets wadded up in a Meffert?? Happenstance, maybe, maybe-not.....
Serbus,
Raimey
rse