Pantographic knife

A pantographic knife or paratrooper knife is a folding knife whose blade is opened by a unique scissors method. The blade has a slightly longer tang than a folding knife heel. The handle is symmetrically segmented and articulated to fold away on both sides to grip the longer tang. The manner is similar to a balisong knife (also called a butterfly knife in western countries)—with which it is often confused. Unlike the balisong knife handles that swing freely and independently, the pantographic knife uses a pantograph linkage to keep the handles aligned during opening and closing. The pantographic knife is very strong when compared to most other folding knife designs, being joined at several points and along several planes—this increases the force required to break the blade away from the handle. By enclosing the blade on both sides, double edged blades can be used.

This knife is also known as a paratrooper knife, although it was never issued as such. The mechanism includes a collar that travels up the blade. This looks similar to an OTF gravity knife used by German paratroopers.

History

Examples of pantographic knives with patent markings D.R.G.M. (Deutsches Reich Gebrauchsmuster) indicate production in Germany during the war, but do not imply military issue. Although this design predates World War II, Records of German paratroopers having genuinely been issued pantographic knives have not surfaced. To complicate identification, samples made with German army markings (brass handles with text in English language) seem to be post war (1948) marketing attempts capitalizing on the term paratrooper.

Function

In this illustration:

Figure A shows the closed knife, with blade retracted.
Figure B shows the pantographic legs opening. The collar is shown sliding down the blade.
Figure C shows the blade almost extended.
And finally, Figure D shows the pantographic legs folded together, making a handle that is half as long as when the knife was closed.

References

Knives and daggers

List of daggers List of blade materials

Types of knives	Aircrew Survival Egress Knife Athame Balisong/Butterfly Ballistic Ballpoint pen knife Bayonet Boline Bolo Boning Boot knife Bowie Bread knife Cane knife Cheese knife Chef's knife Cleaver Clip point Combat knife Commander Corvo CQC-6 Deba bōchō Diving knife Drop point Electric knife Fairbairn–Sykes fighting knife Gerber Mark II Ginsu Grapefruit knife Gravity knife Gunong Hunting knife Jacob's ladder Karambit Kīla Kirpan Kitchen knife Kukri Laguiole knife Machete Mandau Mezzaluna Misericorde Mora knife Multi-tool Nakiri bōchō Navaja Neck knife Nontron knife Opinel knife Palette knife Pantographic knife Parang Penknife Penny knife Pocket knife Putty knife Puukko Rampuri Resolza Sabatier Sami knife Santoku SARK Scalpel Seax Sgian dubh Sharpfinger Shiv Sliding knife Smatchet SOG Knife Straight razor Strider SMF Survival knife Swiss Army knife Switchblade Taping knife Throwing knife Tomato knife Trench knife Tumi Ulu Utility knife Warrior knife X-Acto Yanagi ba Yatagan

Types of daggers	Anelace Applegate–Fairbairn fighting knife Arkansas toothpick BC-41 Bagh naka Baselard Bichuwa Bollock dagger Cinquedea Dirk Ear dagger Emeici Facón French Nail Hachiwara Hunting dagger Janbiya Kaiken Kalis Kard Katar Khanjali Khanjar Kris Mark I trench knife Ocean Edge Knife Parrying dagger Poignard Push dagger Rondel dagger Seme Shobo Sica Stiletto Tantō Marine Raider stiletto V-42 stiletto Yarará Parachute Knife Yoroidōshi

Knife manufacturers	Aitor Al Mar Knives American Tomahawk Company Bear MCG Benchmade Böker Buck Knives Caber Camillus Cutlery Company Cattaraugus Cutlery Company Chris Reeve Knives Cold Steel Columbia River Knife & Tool Cuisinart Cutco Cutlery DOVO Solingen Dexter-Russell Dirte Knives Eikhorn Ek Commando Knife Co. Emerson Knives Erizo F. Dick Fällkniven FAMAE Fiskars Füritechnics Gerber Legendary Blades Global Golok Hanwei Imperial Schrade J. A. Henckels Ka-Bar Kershaw Knives KitchenAid Korin Japanese Trading Company Kyocera Leatherman Mad Dog Knives MercWorx Microtech Knives Morseth Murphy Knives Ontario Knife Company Opinel Pro-Tech Knives Randall Made Knives Ranz Rigid Knives Rösle SOG Specialty Knives Sabatier Aîné & Perrier Spyderco Strider Knives Survival Aids TEKNA Thiers Issard Tramontina Victorinox Vox Knives W. R. Case & Sons Cutlery Co. Walther arms Wenger Western Knife Company Wilkinson Sword Windlass Steelcrafts Wüsthof Yarara Ltd

Knifemakers	A.G. Russell American Bladesmith Society Rex Applegate James Black Blackie Collins John Nelson Cooper Ernest Emerson Jerry Fisk Phill Hartsfield Bill Harsey Jr. Gil Hibben Knifemakers' Guild Zanjan Knifemakers Jimmy Lile Bob Loveless Bob Lum William F. Moran Ken Onion Ralph Osterhout Bo Randall Chris Reeve Jody Samson William Scagel Mike Snody Robert Terzuola Michael Walker Buster Warenski Daniel Winkler

Book:Knives and daggers Category:Knives / Daggers

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