Please do not use modern 22 shorts in your "puppy". They were called puppies, because they were a minature "Bulldog" revolver- yours was likely made for BLACK POWDER shorts.
Chas Clement was from Liege Belgium- cranked out a LOT of guns between 1893 and 1912. You will need to find a smith that will make you a spring.
Some info for you: Nouvelle page 0