Another mystery tool

[RoddyJB]

This is the other thing that came with the leather-craft tools I picked up. It’s marked DUNCAN on top Underneath is DES. 165-970 or maybe the 1 is an I.  My best guess is maybe holding a gouge or chisel at the right angle to use or sharpen 

 

Edited April 11 by RoddyJB

[AlZilla]

I don't know. It looks a lot like this patented knife sharpener:

https://patentimages.storage.googleapis.com/b3/8f/f0/a3ad8bd5a091e9/USD165970.pdf

Patented by Mr D. D. Duncan.

[RoddyJB]

Totally!!

Wow!   I tried google image search and all the terms, DUNCAN & DES. 165-970 and came up with nothing!

[AlZilla]

Same search on Duckduckgo, 1st result:

https://duckduckgo.com/?q=duncan+des+165-970&t=brave&atb=v430-1&ia=web

Regular search, not image. Interesting.

[RoddyJB]

And my swivel knife fits in it perfectly.  Strange how I can’t find any other reference to one of these…

[bruce johnson]

Danny Duncan was the one who came up with this swivel knife sharpener. He also made a wooden handle lace punch. He patented the lever handle punch machine that punched lace and stitch holes. Tandy bought the rights to that and sold them 40 or more years ago. Chuck Smith had a version of it a few years ago called the Punch O Matic or something like that. Chuck knew Danny in his later years. 

[RoddyJB]

Interesting.  I can’t understand how there's really not other reference to this tool.

[bruce johnson]

 

7 minutes ago, RoddyJB said:

Interesting.  I can’t understand how there's really not other reference to this tool.

The patent link above is it. The picture below is from a 1959 Tandy catalog. 

[AEBL]

@bruce johnson, the catalog picture shows a circle with what looks to be an angled (filligree?) blade being sharpened ... seems like you'd have to push it over the stone at a crooked angle to get that to work ... but I could be wrong.

[bruce johnson]

1 hour ago, AEBL said:

@bruce johnson, the catalog picture shows a circle with what looks to be an angled (filligree?) blade being sharpened ... seems like you'd have to push it over the stone at a crooked angle to get that to work ... but I could be wrong.

If you rotate the barrel so the width of the blade contacts the media evenly then a straight or angled blade will sharpen.  That is the problem with illustrations, they skew things. The angled blade drawing shows that angled blade sitting in there parallel to the stone. Lay it in so the blade edge contacts the stone evenly and the blade edge will sitting at a bit of an angle but sharpen evenly.  

The old timer trick for this particular resharpener Is to loosen the set screw in the swivel knife barrel and let the blade rotate freely. A light finger pressure on the blade ensures the blade stays flat on the media. Then you just rotate the blade to the other side and leave the barrel alone.  The angle of the barrel hasn't changed = even angles on both sides. I have some other sharpening fixtures for swivel knives that operate on a similar principle and even though some have a set screw, I never tighten them either. Finger pressure and push strokes only. One exception is the flat shank blades like Gomph-Hackbarth, those I would tighten. 

[AEBL]

I tried sharpening my swivel knife by hand ... that took a long time, and I had to use my jewler glasses to make sure the bevel was flat on the stone. It worked well, I decided to buy a jig.

Edited April 13 by AEBL
missed something