http://www.peterchild.co.uk/chucks/threads.htm
Your lathe seems the same as "Woodfast, some Sorby, Killinger, Wabeco, Hapfo, Hager, Flott, Konig, Emco, Sheppach and most German lathes use this thread but please note the register size varies and specials may be required. 33mm x 3.5mm MC22"...