Yes, what I was thinking is how knives were made in Sheffield, England. The great majority of knives used in North America prior to say 1840 were imported from Sheffield. There are museums there you can visit and learn about the trade. If I recall the first factory was built around the 1820's. By "factory" I mean one establishment that did the entire process, made the blade, the fittings, and assembled the knife. Prior to that time the work was divided among specialists. Some made the steel (Iron was often from Sweden from which steel was made in Sheffield). Blades were forged. Massive tilt hammers were used for this forging- a drop or two and the blade was done. Then off to the shops with the big stone grinding wheels, then if a better grade blade- polished on the leather covered wheels coated with a crocus (sic?) polishing type compound. The handles were made else where. The "cutlers" were the craftsman that assembled all the parts.
A large order was often obtained and the work farmed out to various shops. The man that got the order had his stamp mark put on the blade, so...you might have a blade stamped Furnis that was forged in a Nowill shop. Nowill had a Furnis stamp and stamped the blade Furnis. This explains in part why knives often have stamp marks that look slightly different as to lettering or spelling (Furniss, Furnis, Furnes, Etc.)
Please realize I am giving you a very brief outline, exceptions always exist. It is a pretty complex topic all in all- but I've found it fascinating.
Knife Expert Bernard Levine has also translated the "Art of the Cutler" from French to English. This massive three volume work published in 1776 gave a complete description on how to set up the shop and every detail of the manufacturing process. I have read bits of this work but reading the whole thing is on my "to do" list.
We also have the "homespun" knives made here in North America. They are important to be sure but as has been said, the great majority of knives came from Sheffield. Sheffield was the knife making capital of the world and if I recall correctly I think Bernard Levine said over half the Sheffield production by around 1860 was going to North America. A good portion of that was pocket/folding knives.