xausa,
The term I was interested in is "Huelse". The main difference between what I am thinking and the modern use of liner is that now a liner would be a rifled tube inserted into a barrel that has been prepared for it by drilling, boring, and or reaming. It would be held in by solder or commonly, now, adhesive. What I am talking about is one that is not rifled, but is included in the making of the pattern welded barrel by having the wire or bands, or what ever wound around it and welded to it in manufacturing process. After the blank barrel was made, it would then be bored/reamed to size, then rifled. This applied to pattern welded rifle barrels only, not shotgun barrels.
Mike