folding knife mystery solved

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Posted 15 months, 19 days ago

walksoftly
(75 items)

I had posted this four days ago, hoping to get help figuring out how to open it, after a lot of searching I found the U S patent number 338,251. patented March 23, 1886. no mfg. marks or info
U S patent drawing link
http://patimg2.uspto.gov/.piw?docid=00338251&SectionNum=2&IDKey=BA8F331A91BF&HomeUrl=http://patft.uspto.gov/netacgi/nph-Parser?

To open it you pull out on the side of the knife body and lift it from its locking pin at the tip of the blade, then you rotate the body side CW and it takes the blade with it into the working position, continue CW and place it back on the locking pin.

Comments

1. Savoychina1, 15 months, 19 days ago
   Thanks for sharing both the knife AND the answer. Having mastered the patent office you are now un-officially on our research team. Every third " un-solved mystery" is yours !
2. walksoftly, 15 months, 19 days ago
   It was by looking at old patents that where referenced for new knife patents that I found it. An interesting side point The patent was issued to a man with the last name Crandall. Crandall is the name of my home town, no connection though.
3. AR8Jason, 15 months, 19 days ago
   Patent number: 338251
   Filing date: May 4, 1855
   Issue date: Mar 1886
   To N.W. Crandall and D.W. Jopson of Meriden, New Haven, Connecticut
   
   If you have trouble loading the US Pat Office one with the required add-on, as I do, you can go here.
   
   This is the drawing ...
   On the upper left you can then change to the ..
   Overview
   Abstract
   › Drawing
   Description
   Claims
   
   http://www.google.com/patents?id=5ltGAAAAEBAJ&printsec=drawing&zoom=4#v=onepage&q&f=false
4. AR8Jason, 15 months, 19 days ago
   For an old patent there is 6 applications to this on knives since Jan. 2001.
5. walksoftly, 15 months, 19 days ago
   It must have been a significant patent.
6. walksoftly, 4 months, 27 days ago
   Thanks for the L's , Picking- and-collecting, AR8Jason, & Savoychina.

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