Late to the party. Gary: the various makers of that
BARREL pattern called it "Bernard II"; some added "Rose Pattern"
Manufacture Liegeoise D'Armes A Feu Damascus Salesman's Samples from the collection of Ken Waite Jr. and Ken Waite III
https://docs.google.com/document/d/1...P3FP0fXb0/edit
And back to the OP's question:
Rose Brothers of Hales Owen, 1860-1892 was an important manufacturer of gun barrels. The company held several British patents related to barrel and tube making. One was granted for making twist barrels by machinery, British patent #13299 of 24th Oct 1850. Barrels made by Rose Brothers are often marked; "Roses Patent" or just "Roses."
An advertisement of 1868 –
“ROSE BROTHERS (by her Majesty’s Royal Letters Patent) Hales Owen Mills and Forge, near Birmingham, Manufacturers of Chassepot Rifles and Every Description of Military Gun Barrels, from either steel or iron, Manufacturers of Drilled Cast Steel Moulds, for rolling Chassepot Rifle Barrels, or any other description of Military Barrels. Also, Manufacturers of every description of Sporting Gun Barrels, Either Breech-Loaders, or Muzzle-Loaders, made from Steel or any description of Fancy Twist Iron. Contracts made with Foreign Governments for Chassepot Rifle Barrels, either in the unfinished or finished state, likewise for Cast Steel Drilled Moulds. N.B. Retail Warehouse 25, Newton Street, Birmingham.”"
Threaded Mode