Make Up of a Pocket Knife
Pocket Knife Nomenclature
Backspring - The spring in the back of a folding knife that
applies pressure to the blade.
Bail - A small metal loop attached to the end of some knives
for the purpose of wearing on a chain.
Blade - The main component of a knife, the cutting part.
Bolster - The metal ends of a pocketknife that are attached
to the liners. Protects the handles and provides sturdiness.
Bone - A natural long wearing material that is used for
handles, generally comes from cattle.
Cap - another term for bolster.
Clip Point Blade - A blade with a straight or concave shape
along the backside of the blade. Typically the main blade of a pocketknife.
Covers - The outside covering of a pocketknife, also referred
to as scales or handles.
Cutler - Knifemaker
Dogleg Jack - Serpentine shaped folding knife pattern with one end
larger than the other, (swelled end).
Easy Opener Jack - Jack knife pattern featuring small half
round cut-out in the handle.
Equal End Jack - Pocketknife pattern where both ends are of
the same size.
Folding Knife or Folder - Any knife with a pivoting or
folding blade, smaller of which are also called pocketknives.
Frame - A folding knife's liners and bolsters, sometimes
including the springs.
German Silver - An alloy of copper, zinc and nickel. Also
called nickel silver. A whitish metal commonly used for bolsters, scales,
liners, and shields.
Haft - Old term, refers to handles or scales,
"Hafting" - refers to the operation of shaping of the handles or scales.
Jack Knife - A class of pocketknives, commonly used to
describe folding knives with blades that pivot from only one bolster.
Jigged or Jigging - Small cuts made into bone or other handle
material to provide a gripping surface or to imitate stag.
Joint - Pivoting point of a folder.
Kick - Downward projection of a pocketknife blade tang.
Prevents the cutting edge from making contact with the backspring while in the
Liners - A flat piece of sheet metal, commonly brass or
nickel silver that defines the shape of the knife, helps make up the frame, and
provides attachment points for nails, pins, and scales. The center liner on
multiple bladed knives provides space between the blades.
Main Blade - Master blade of a folding knife.
Nail - Small metal projection protruding through the scale,
liners, springs, blades, and bolsters to join the parts of a pocketknife.
Nail Pull - Small notch cut into the blade near the backside
for ease of opening. Also called the nail nick or nail mark.
Pattern - The overall shape of a pocketknife, also can refer
to the designed use.
Pen Knife - Class of pocketknives, usually refers to knives
with blades that pivot from both bolsters.
Pin - Small metal projection used to attach the handle to a
Pivot Pin - The axle on which folding blades pivot, also
called hinge pin.
Pocket Blade - The main blade of a pocketknife.
Pocketknife - Folding knife that is small enough to carry in
Rivet - Same as pin or nail.
Scale - Cover or handle.
Shield - A decorative small metal inlay found on many
Slope - The bevel of a bolster.
Spring - Also called backspring, this is what holds the blade
in the open or closed position.
Swedge - The bevel on the back or top of a blade.
Swell End Jack - A class of pocketknives where one bolster is
larger than the other.
Tang - The unsharpened extension of a knife blade that
attaches to the pivot pin.
Walk and Talk - The "walk" is the tension that is
felt when opening and closing. The "talk" is the audible snap that is
heard when opening and closing the blades of a pocketknife.