One classic pocket knife pattern is the trapper. This pattern seemed to have originated in northeastern U.S. in the early 20th Century. Almost all manufacturers of slip joint knives have or are making a trapper-style knife. Most have two blades, but a few rare ones have three. (Mark disagrees that a 3 bladed knife is still a Trapper)
Trappers traditionally have two blades hinged on the same side. The blades, of almost equal length, are clip and spey pattern blades. The blades were designed for specific needs.
“…I want to comment on the trapper name. Whether the pattern was created for the purpose the name implies is unclear. Whatever the case, I can testify that the size and patterns of the blades make trappers well suited for dressing and skinning small animals.” Gary Zinn
Check out Frank Karl’s Blag: The Knife Edge: One man, so many knives
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