A very interesting subject, but I think its necessary to go back a little further in time. Multi-bladed folding knives actually have a long tradition in France, and were probably first made there. Perhaps the first were knives with one steel blade, and one of silver or gold, for cutting fruit, developed during the latter part of the 17th century. A French knife of this type was reputedly given by King Charles II to his mistress Nell Gwyn. During this period, French cutlers were arguably foremost in terms of cutlery innovation, and their designs were very influential in terms of those produced in England, up to around 1770, when Napoleon began his conquest of Europe. While the French influence on British pocket knives began to wane thereafter, many of the pocket knives included in
Smiths Key of 1816 clearly have a degree of French design influence. According to cutlery historian Simon Moore, The design of the
couteau was favoured by English cutlers who liked and copied the idea of mounting blades at either end of the haft. Although English versions of this knife [as described above] were produced, mainly later in the 18th century, many incorporated two steel blades of different sizes rather than one of silver or gold. So, the quintessentially English penknife may owe much to our friends across the water, the French
The earliest folding knives, across Europe, were designed primarily as eating implements, rather than folding tool boxes, which only came later. Obviously the US is a much younger country, where folks had different requirements of a folding knife. Many of the folding patterns produced in Sheffield were aimed specifically at the American market, by far the biggest customer of the Sheffield cutlery firms, and, as with the Bowie knife, there was certainly a degree of canny marketing in terms of designs (by both the European cutlery firms and the European cutlers who settled in the US), the Stockman pattern springs to mind. After the introduction of import tariffs, and as the US developed its own cutlery industry, Sheffield cutlers had to try and maintain an edge. Despite some superb examples produced in France and Germany (where multi-bladed knives have long been popular with hunters), I think it can be argued that Sheffield was paramount in terms of producing multi-bladed knives, and acquired an unparalleled reputation for their cutlery, but in England at least, the Sportsmans knives would have been reserved for the relatively affluent, with most people in Britain carrying a single-bladed knife, or a penknife or two-blade Jack (I dare say that was true of many folks in the US too), with the vast majority of pocket knives with more than two blades being aimed at the export market.