Where to get a crank puller for a vintage bicycle?

Question

I'm trying to restore vintage bicycle I happen to own. I came to the stage of pulling cranks off and it apperas that I can't find the appriopriate tool to do that. Could anyone advice me on this? I attached some photos of the thread in the crank.

EDIT

As some pointed out in comments there is separate thread in the bottom bracket axle. It's a square taper bottom bracket and the crank is bolted onto it just like with modern square taper BBs. In other words there is a thread in the axle and a separate, bigger one in the crank. The problem is a thread gauge. I thought I could find appriopriate puller online but I failed.

EDIT 2

I've taken a picture of bicycle itself, and also I managed to scrape black paint from a little plate riveted to the headtube uncovering name of the bicycle manufacturer. Apart from that, and the facts Pashley is a British company, I don't know anything about bicycle's origin.

EDIT 3

So after two years I decided to go destructive. I took cranks off, they didn't survive...BB axle needs to be thrown in the bin too. Unfortunately bottom bracket is non standard type. For those who are curious pictures below:

Answer 1

First option is to ask your usual LBS if they have a tool for the job. Most older bike shops have weird tools that get used once a decade.

Avoid bike shops that sell running shoes - you want an old shop that does touring bikes and has been around for decades. Ideally it should be packed full, no wide-open aisles.

If you're a regular customer, they might not even charge. Even if you got 1/4 hour labour, its still cheaper than buying a once-off tool.

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Are you confident there's a normal thread cut inside the frame? One for which you can buy a modern cartridge BB?

If so, I'd go destructive.

1. Heat the crank arm with hot air for 5 minutes, then squirt liquid oil into the middle. You're aiming to heat the outside and cool the inside axle. Use two levers to push the crankset off the frame (two big screwdrivers or crowfoot or small crowbars)

2. Cut the whole thing off with an angle grinder while taking care not to ding the frame. I'd do a plunge cut straight across the axle with a cut-off disk, and keep cutting down till the chainring has a cut in it. Then use a thin wedge like an old screwdriver in the slot to widen it and lever the crank off the bike.

You'll probably never use this special crank-puller again, and there's an excellent chance the square taper is not-quite normal so you'd need a replacement BB axle anyway.

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Downside of this is that reverting to stock will be impossible, so you need to ensure all the new belt-drive parts will fit before committing.

Answer 2

It appears the extraction threads are 10mm. That wouldn't leave room for a tool to be hollow and have something running through them to push against the spindle, which is hollow.

I'm not totally sure what the intention here is but it's probably something along the lines of just using any bolt that's the same thread as the extraction threads, screwing it in and letting the tip ram against the spindle.

If you wanted to be gentler on the spindle, at least for the sake of testing the theory, you could get a grub bolt the same size as the crank bolt and let the extraction bolt ram against that instead.

Make sure the threads on the crank are actually integral with them and not some kind of cap.

A slide hammer or pickle fork could also do it, but the former can damage the bearings and the latter the crank, BB, and in some cases the frame/paint.