As a sidebar, seems many notable concerns were involved w/ the Rmer & Compagnie machine works. Names like Dornheim, Funk, Greifelt, Jung, F.W. Keler & heirs and Paul Stadelmann were heavily involved. Remember Paul Stadelmann was a student of Otto Bock and became a principle in E. Schmidt & Habermann. I have very strong suspicions that the
>>Clamshell / Muschel-Verschluss / Stabil-Verschluss Action << were sourced there. Most of the members @ one time offered one.

Cheers,

Raimey
rse