Two Blades - One Spring and multiblades with minimal thickness

[sceva]

I like small knives and I tend to single blades as like my small knives thin. One way to get a two bladed knife reasonably thin is to use a single backspring. I am always amazed at how the makers grind the blades so that they nest together with minimal or no rub. More stock off one side than the other, taper on one side, crinking ( bending the blades slightly so they nest - Often seen in multiblade or stockmans knives )

here are two favorites

A GEC Tidioute 09 Esquire - GEG grinds them assymetrically with more stock removed from one side and linear ( distal?) taper as well as the main blade being thicker and using a spacer on the pen so they nest without rubbing.



Old Winchester Pen knife # 2963 - Winchester tapered one side and used a thinner blade (both blade about same thickness) to nest them very closely creating an even thinner knife




No photos handy of three or more bladed knives

Please show your's - how many ways do the different manufacturers use to accomplish a minimal thickness multiblade knife

 

[Peregrin]

The Case-Bose Norfolk Collaboration knife from 2009 is a great example of how to nest opposite end blades. They are not cheap knives, but when you see the workmanship, you begin to understand why.

 

[sceva]

Very nice. Similar to the GEC but no need for a spacer on the pen end

Meant to say Crinking in the first post instead of crimping - edit made

Keep them coming. post photos of crinked blades too

 

[Misplaced Hillbilly]

Well I'm going with three springs..

But with five blades! With a combination of asymmetrical grinds and crinking, Case got five blades in this medium stockman. The blades do nest nicely, but do exhibit some blade rub opening just from the inevitable sideways pressure needed to open it.

Please excuse the big'ol thumbprint

 

[Just Tom.]

This one is on the budget end of the spectrum, but at about 3/16” thick, the blades are nicely nested (sorry about the image quality):

 

[Spaten]

Robeson, Winchester, GEC
Double end single spring knives are my favorite. Very thin in the pocket, with an extra blade!

 

[rockman0]

3 1/8" and 3 1/4" Hardware store stamp and a case tested.

A pair by Challenge, 3 1/4" and 3 1/2". Very thin blades perfectly nested is how they accomplished these thin knives or that's the case in these 4 knives
I'm amazed that none of the blades rub each other or the liners

 

[Misplaced Hillbilly]

Ulster sure could make a slim two blade congress

 

[sceva]

That Congress is beautiful.

These are all great - show some more.

I wonder how often a blade broke when crinking them?

 

[rockman0]

Sweet Ulster David nice full blades and very pretty bone You got a good one

Ulster sure could make a slim two blade congress

 

[Misplaced Hillbilly]

Sweet Ulster David nice full blades and very pretty bone You got a good one

Thanks, in the right light the blade etch is still visible, and the pen blade retains the factory edge. Antique shop find, and I got it for an embarrassingly low price definitely one of my best finds

 

[rockman0]

Etch? Now I'm jealous, reminds me of an idiom regarding a blind pig

Thanks, in the right light the blade etch is still visible, and the pen blade retains the factory edge. Antique shop find, and I got it for an embarrassingly low price definitely one of my best finds

 

[Ron Sabbagh]

The Case Bose Norfolk collaboration often comes up when discussing quality multiblades with a single backspring (and rightly so!) but often we fail to mention the equally impressive Improved Muskrat collaboration which provides 2 full size desireable blades on a single stout backspring.

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