Stecker
 

I often asked myself when and by whom the stecker has been invented.
Same question with the so called "butterfly"(the little swinging appendix on the lower part of the cock, made to fasten the release of the same when firing).
This device is found on flint and percussion locks I think it has not used later.
I believe some friend can satisfy my curiosity.
Thanks in advance.
Gio

Gio, you probably mean Stecher, also called 'hair trigger', an ingenious mechanism that drastically reduces the pressure/tension applied to the actual trigger, invented by a Munich gunsmith in 1543 ?

Many thanks, Fernando. Now I have a date and a place. I was not able to find such info by myself.
As to the other device (the "butterfly"), I apologize I don't know the English name (as for the STECHER), but am confident to obtain some info.
Thanks again for the quick answer.

At the end I found it. It is called FLIEGE in German, therefore FLY in English.