Mystery pin spanner

[imc188222]

I bought this at a yard sale yesterday because it looked cool, it was cheap, and I don't know what it's for.
It obviously is a pin spanner, so I know that much. Does anyone know what specific purpose it was made for? Is it automotive, plumbing, machinist, machine specific? There are no markings on it whatsoever.
-Isaac

 

[Private Lugnutz]

Cool find! Whatever it was meant to turn, I am postulating that it was meant to turn it quickly, hence the knob. Not sure about that arm. Might be for valve grinding/lapping, although I have never seen a design like that, and it seems like overkill.

 

[imc188222]

I forgot to mention, the knob swivels. So, the way I see it working is using the handle to turn it and pushing down on the knob to keep the pins from camming out of the holes.
-Isaac

 

[humber2]

Edit: I thought I have a Vlchek version of this tool.

But it is a Walden Worcester #3, image is on Google.

It is for grinding valves on a Model T engine.


The Vlchek tool I have is the valve Spring compressor for the Model T.

 

[Private Lugnutz]

So I had a good guess, for once!

 

[HeelSpur]

Sweet find.

 

[imc188222]

Thanks guys. I have been searching google images and so far I haven't found a picture of that tool. However, in my searching, I see that Ford Model T engine valves do have two "holes" in them. Model T valve lapping tool is looking likely.

humber2, could you post a picture of your Vlchek version in this thread? Thanks

Here is a picture (that I borrowed from Google) of a Model T engine cutaway showing the holes in the valves that I mentioned.
-Isaac

 

[Private Lugnutz]

Most valves had them, and most valve lappers or lapping attachments had pins. This is prior to the suction cups.

 

[humber2]

I have edited my post and found the image by Google.

Walden Worcester #3 will get you there.

 

[notlob]

Walden Worcester #3

https://www.ebay.com/itm/Vtg-WALDEN-Worcester-3-Ford-Valve-Grinding-Tool-Antique-Car-Repair-Wrench-USA-/281550296145?nma=true&si=SXDSK9UwZJUsPkaKkOPJETj5mgc%253D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557

 

[Private Lugnutz]

Those are both cool as hell, knob or no knob. Now I want to find one!

I ran into a mess of modified tools in a box I was pawing through at the flea market this morning. (Ignore the wrench, which I snapped for a different thread...) That screwdriver with an attachment welded to the end of the tip is a valve lapper. You just roll the handle back and forth in the palms of your hands like you're a Boy Scout trying to earn a merit badge by starting a fire with two ticks and friction.

 

[humber2]

https://www.ebay.com/itm/Vtg-WALDEN-Worcester-3-Ford-Valve-Grinding-Tool-Antique-Car-Repair-Wrench-USA-/281550296145?nma=true&si=SXDSK9UwZJUsPkaKkOPJETj5mgc%253D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557

Yes that's my version, thanks for posting.

The knob version would be better to work with on days of extreme hot or cold temperatures.