I had a look in my library at the weekend for reference to sideclips and patents.I didn't spend a great deal of time on it but I have to admit I found nothing.Somewhere in this old head I seem to think that Tolley had something to do with the subject.The later post on ventilated ribs brought home to me how the shotgun as evolved and how the manufacturers were continually coming up with 'must haves' to continue the flow of orders.Churchill, Cogswell, Westley to name just a few.
Homeless you have certainly opened up a can of worms now I will not rest until I find out who, if anyone did, patented sideclips.
HELP.