Neat
https://doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=599685

Raimey mentioned the Rossen 1913 patent

[Linked Image from photos.smugmug.com]

Powell grip safety. I couldn't find the patent.

[Linked Image from photos.smugmug.com]

T. Horsley
https://www.christies.com/en/lot/lot-1374596