Showing posts with label Pocket Knives. Show all posts
Showing posts with label Pocket Knives. Show all posts

Monday, August 24, 2009

History of the Pocket Knife

The pocketknife is obviously a recent invention, right? After all, the technological skill required to craft a workable fold-up knife must be a product of the industrial age. Besides, what need would men have had for a pocketknife in the days before pockets? Well, don't be surprised if you come across a rusty, time-worn pocketknife among the display cases of a museum, a tool, say, 2,000 years old!

Knives themselves, of course, have been with us since the Stone Age. Primitive man used cutting tools and weapons made from stone and flint, and later, from bronze and iron. The ancient Romans were skilled metalworkers, spreading their craft throughout their Empire, and the Romans left us the world's first known fold-up pocketknives.

The Roman implements were about three inches long when shut, fashioned without a spring or "nail nick", the groove used to open the blade. The handles were often elaborately carved. One pocketknife surviving from the first century features an ivory handle skillfully carved into the shape of an armored gladiator. Another Roman knife, now in the British Museum, had the carver's name scratched into the handle.

Table knives did not exist in the Middle Ages, each diner was expected to bring his own knife which between meals, doubled as a dagger. Nor did innkeepers provide table cutlery. Affluent travelers often carried sets of elegant tableware among their baggage. Obviously, the pocketknife would have been an ideal all-purpose tool for the medieval European, but few pocketknives were in existence at the time. Most men preferred an unfolding knife in a scabbard to a pocketknife, owing either to the lack of good spring knives or to the shortage of pockets.

Until the eighteenth century, the only kind of pocketknife generally available was the jackknife, a heavy tool with one blade that closed into a groove in the handle. Then cutlerers began using springs to secure the blade in both the open and closed positions, providing a safer, firmer tool. From that time on, pocketknife manufacture became known as spring knife cutlery.

As the craft improved, multi-bladed tools began to appear, the penknife by far the most important. No, penknife, is not, strictly speaking, interchangeable with pocketknife. A penknife was a specialized pocketknife with one-blade opening at each end of the handle. The smaller of the two blades was used to trim and sharpen quill pens.

Throughout the eighteenth and nineteenth centuries, anyone who wrote had to own a penknife, and spring knife cutlery became a major industry in Europe and the United States. The penknife was the premiere product of the cutlerer's craft, for the fitting of a spring knife demands highly skilled work. The blades were made from high-grade steel, tempered slightly harder than table knives. The more expensive models were finished by jewelers, with handles fashioned from silver, ivory, pearl, horn, ebony, and tortoise shell. An American cutlery catalogue from 1893 lists some 1,500 pocketknife models, which might suggest both the size of the industry and the variety of product available at the time.

Since at least the fourteenth century, the English cutlery industry had been centered around the city of Sheffield, while German knife makers from Solingen have long excelled at their craft. It was nineteenth-century Sheffield cutlerers who began fitting pocketknives with various other tools, among them buttonhooks, files, leather borers, tweezers, gimlets, saws, and implements curiously known as "castrating blades." One interesting Sheffield creation sported both a pistol and a dagger.

The jack-of-all-trades knife, often known as the sporting knife, is today the most popular kind of pocketknife, fitted with nail files, clippers, scissors, corkscrews, forks, spoons, you name it. Special sporting models have been designed for fishermen, engineers, and campers, some combining a tool chest of implements into one handy pocketknife.

The Norfolk Sportman's Knife, manufactured in 1851, was fitted with seventy-five blades, and took two full years to manufacture. But the award for pocketknife-blade proliferation surely goes to the Year Knife, made, like the Norfolk, by the world's oldest cutlery firm, Joseph Rodgers and Sons Ltd. of Sheffield. This knife was introduced in 1822 contained 1,822 blades, and the firm has added one blade to the knife each year since. By now, of course, it's far from a "pocket" knife. In 1977, this one-of-a-kind tool was fitted with its 1,977th blade, and the number will continue to match the year until 2000 A.D., when there will be no further room for blades in this gargantuan tool.

Though we have little need for the penknife today, pocketknives are still widely manufactured. In the recent past, young boys often carried pocketknives for whittling, or for games like mumblypeg; but after the teenagers of the 50's took to carrying switchblade and pushbutton knives for less savory purposes, we no longer look kindly upon knife-wielding youths. Laws have been passed in some states stipulating the maximum length for a pocketknife blade, a longer blade is considered a deadly weapon.

If you number yourself among the ranks of pocketknife owners, take note: pocketknife manufacturers warn that their products demand constant attention. The spring joints of each blade should always be kept well oiled. And most important, a pocketknife blade should never be used as a screwdriver or lever. The blades are made from special steels tempered to maintain an edge, but not to withstand the strains of bending. If you need a screwdriver, you'll have no trouble finding a pocketknife fitted with one.

Sunday, March 29, 2009

History, Materials and construction

History

The earliest knives were shaped by knapping (percussive flaking) of rock, particularly harder rocks such as obsidian and flint. During the Paleolithic era Homo habilis likely made similar tools out of wood, bone, and similar perishable materials that have not survived. As recent as five thousand years ago, as advances in metallurgy progressed, stone, wood, and bone blades were gradually succeeded by copper, bronze, iron, and eventually steel. The first metal (copper) knives were symmetrical double edged daggers, which copied the earlier flint daggers. In Europe the first single edged knives appeared during the middle bronze age. Modern knives may be made from many different materials such as alloy tool steels, carbon fiber, ceramics, and titanium.


Materials and construction

Today, knives come in many forms but can be generally categorized between two broad types: fixed blade knives and folding or pocket knives.


Characteristic Parts of the Knife

Modern knives consist of a blade (1) and handle (2). The blade edge can be plain or serrated or a combination of both. The handle, used to grip and manipulate the blade safely, may include the tang, a portion of the blade that extends into the handle. Knives are made with partial (extending part way into the handle, known as a "Stick Tang") and full (extending the full length of the handle, often visible on top and bottom) tangs. The handle can also include a bolster, which is a piece of material used to balance the knife, usually brass or other metal, at the front of the handle where it meets the blade. The blade consists of the point (3), the end of the knife used for piercing, the edge (4), the cutting surface of the knife extending from the point to the heel, the grind (5), the cross-section shape of the blade, the spine, (6), the top, thicker portion of the blade, the fuller (7), the groove added to lighted the blade, and the ricasso (8), the thick portion of the blade joining the blade and the handle. The guard (9) is a barrier between the blade and the handle which protects the hand from an opponent, or the blade of the knife itself. A choil, where the blade is unsharpened and possibly indented as it meets the handle, may be used to prevent scratches to the handle when sharpening or as a forward-finger grip. The end of the handle, or butt (10), may allow a lanyard (11), used to secure the knife to the wrist, or a portion of the tang to protrude as a striking surface for pounding or glass breaking.


Blade

Knife blades can be manufactured from a variety of materials, each of which has advantages and disadvantages. Carbon steel, an alloy of iron and carbon, can be very sharp, hold its edge well, and remain easy to sharpen, but is vulnerable to rust and stains. Stainless steel is an alloy of iron, chromium, possibly nickel, and molybdenum, with only a small amount of carbon. It is not able to take quite as sharp and edge as carbon steel, but is highly resistant to corrosion. High carbon stainless steel is stainless steel with a higher amount of carbon, intended to incorporate the better attributes of carbon steel and stainless steel. High carbon stainless steel blades do not discolor or stain, and maintain a sharp edge. Laminate blades use multiple metals to create a layered sandwich, combining the attributes of both. For example, a harder, more brittle steel may be sandwiched between an outer layer of softer, tougher, stainless steel to reduce vulnerability to corrosion. In this case, however, the part most affected by corrosion, the edge, is still vulnerable. Pattern-welding is similar to lamimate construction. Layers of different steel types are welded together, but then the stock is manipulated to create patterns in the steel. Titanium is metal that has a better strength-to-weight ratio, is more wear resistant, and more flexible than steel. Although less hard and unable to take as sharp an edge, carbides in the titanium alloy allow them to be heat-treated to a sufficient hardness. Ceramic blades are hard, and brittle, and lightweight: they may maintain a sharp edge for years with no maintenance at all. They are immune to common corrosion, and can only be sharpened on silicon carbide sandpaper and some grinding wheels. Plastic blades are not especially sharp and typically serrated. They are often disposable.

Saturday, March 7, 2009

SharpPockets

We offer our customers a wide variety of Pocket Knives, Folding Knives and Knives for Hunting, Fishing, Armed Forces and more. SharpPockets also offers items for Self Defense and Law Enforcement. Our site is located on the web at SharpPockets.com. Please visit our site and let us know what you think. All feedback received will help us to build our site so it will be more user friendly and will be greatly appreciated.

At SharpPockets Customer Satisfaction is our number one goal!

Sincerely,
Michael V Foright