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2019年7月

2019年7月 6日 (土)

Mystery Tool

次回この記事の日本語版を投稿します。

I recently acquired a box full of old bicycle tools.
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Tools are interesting, they are all designed with a specific purpose in mind; however, with old bicycle tools it is often difficult to figure out exactly what the tool was designed to do.  I have a few old tool catalogs which have been very helpful in uncovering the purpose of unfamiliar tools.  But catalog information is limited and I have had to rely on other sources to unravel mysterious tools.  In the past a fellow vintage Japanese bicycle enthusiast "ShigeP" over at しげP自転車の日記 (Japanese only), has enlisted the assistance of other enthusiasts to help solve a couple of mysteries. 

This mystery tool below was solved at ShigeP's blog and turned out to be a rear drum brake adjustment tool for Honda Super Cub scooters.  In the old days, bicycle shops serviced not only bicycles but mopeds, scooters and motorcycles.Img_0

This mystery tool below turned out to be a spoke cutter used to cut the excess spoke ends after assembling a wheel.Img_5

In the recent batch of vintage bicycle tools, once again, there was a mystery tool, one I have yet to come across. 
Let's take a look.

Appears to be some sort of pliers. 
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Let's take a closer look at the tips. 
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The tips have been hollowed out to create a specially designed cavity.
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The cavity must clamp onto something, but what???
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My guess is that this is a tool created to pull out stuck Woods (aka Dunlop/English) tire tube valve cores.
Let's take a closer look.
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The Woods (aka Dunlop/English) valve core seems to have the same contour as the cavity.
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Perfect fit!
The cavity diameter is slightly smaller than the valve core allowing it to firmly grab the valve core.
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Valve core is easily pulled out without any damage to the core itself, nor the cap screw threads.
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The valve rubber has a nasty way of welding itself to the valve inner walls, this is especially true on old bicycles which have been sitting for years.
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Interesting tool. 
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Most likely a one-of-a-kind tool fabricated by someone by machining the tips and then adding them to an old pair of Backsmith pliers. The two holes are obviously the original pivot point. 

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If anyone out there has seen something similar kindly let me know.

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