PeteM
A quick read of the second patent, which is an addition to the first, seems to make it the invention behind his Model Platine with detachable lockplates. Very interesting.
Of note is that his brochure declares, "Thanks to them (those hunters & shooters who procliamed the superiority of his works) our brand, though still young, has conquered d'emblee(?) the sought-after position that it holds in the first rank, and that it will keep by its impeccable workmanship and the happy exploitation of its recent and inimitable patents."
Regards, Tim