Allotments 4 All

 :D hi all, ive a merry tiller titan rotavator which is 40 years old and works great, what i would like to know if anybody can is it came with some attachments but i havent a clue what they are or what they do, one set as just fingers on them, the other set as metal discs & fingers on them, hope this makes sence, thanks for any information,cheers mick ???

Like these?

http://www.merrytiller.co.uk/merry-tiller-history.htm

 :)hi tim, in the top picture thats what one set looks like but the disc is bigger, and the other set looks like the picture but without the disc, cheers mick 8)