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UPDATE: The Tumbler Knife Sharpener is a Knock-Off
Germany company Horl invented this knife sharpening system
Editor's Note: We've learned this Tumbler product is a knock-off, not a licensed copy, of the Horl sharpener. Read the full story here then be sure to buy the original!
This is a copy of the Horl sharpener.
This is a copy of the Horl sharpener.
This is a copy of the Horl sharpener.
This is a copy of the Horl sharpener.
The magnetic block offers a 15-degree angle on one side, and a 20-degree on the other.
This is a copy of the Horl sharpener.
The rolling sharpener is also dual-sided: The continuous surface is diamond-plated, meant to do the initial sharpening. The spiral surface is stainless steel and meant for the final honing.
This is a copy of the Horl sharpener.
This is a copy of the Horl sharpener.
This is a copy of the Horl sharpener.
Core77 supports original products, and regrets initially publishing this post under the impression that Tumbler's design was original. You can find Horl sharpeners in stores, on Amazon or on their site. Thanks to the readers who brought this to our attention. Read our story about Horl here.
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Comments
Looking at the 1949 patent, this is nothing like that. The patent shows putting the knife blade into a base v design that can replace different blades. This design is different. You have a holder and a base cutting plate. Looks like a great design.
It appears that both the HORL and the Tumbler are based off of a design from 1949 which always patented and whose patent expired in 1966.
https://patents.google.com/patent/US2475110A/en
This is a shameless copy of the patented Horl sharpener.
When a Patent expires, its claims are no longer protected intellectual property. They can be used by anyone. That might not sound fair, but that's how patents work. Infringement is not possible. The manufacturers are on equal footing and they compete based on quality and price.
When the Patent has expired, that is the end of the story. Anyone can produce a similar product. It might not sound fair, but that's how patents work.
I don't know who was first, Horl or Tumbler with roller design but both are a great knife sharpening design.
Just a shameless copy of Horl: https://horl.com?
wow that is a spot-on copy. They even have the logo in the same place.
I'd say it's likely a licensed white-label offering, not a copycat. It's way too perfectly identical for anything but that.
Thanks for pointing this out, we have changed links to point to the Horl.