[CR]How to remove TA Criterium crankset? - 1963 Cinelli

I am just beginning to think about the rebuild of the 1963 Cinelli I bought last year. As I examined it today I realized I don't know how to remove the cranks. I tried removing the bolt type cotter-pin, hoping that would allow the crank arm to come off easily. No such luck. There is no obvious (to me anyway) way to use a conventional crank remover. I was tempted to apply blunt force, but thought better of it. Any advice would be appreciated.

You can see the bike here: http://www.wooljersey.com/gallery/David-G-Whites-Bikes/1963Cinelli/ (mapped)

And the crankset in these two photos:

http://www.wooljersey.com/gallery/David-G-Whites-Bikes/1963Cinelli/As+received/1963+Cinelli+1193+-+bottom+bracket+with+grease+port+and+TA+Criterium+crankset.JPG.html (mapped) or: http://tinyurl.com/2mptvq (mapped)

http://www.wooljersey.com/gallery/David-G-Whites-Bikes/1963Cinelli/As+received/1963+Cinelli+1193+-+TA+Criterium+crankset.JPG.html (mapped) or: http://tinyurl.com/37mp95 (mapped)

The TA Criterium crankset can also be seen here: http://www.classicrendezvous.com/France/parts/TA/TA_cotr_crk.htm

Thanks!

David G. White
Burlington, VT