I have a falling block rifle manufactured by James Burrow in Preston. It is a No.1 450 express caliber with lever action and a long side arm with a thumb grip for cocking/uncocking.
Swinburn's patent appears on the side of the receiver and Henry's Rifling is stamped on the side of the barrel, the top of which is flat. It has been in the family for a long time and I would like any information available in regards to the weapon and it's manufacturer.