Beg urgent works for old printer (9)
I believe the answer is:
gutenberg
'old printer' is the definition.
(Gutenberg introduced the printing press to Europe)
'beg urgent works' is the wordplay.
'works' indicates anagramming the letters (work can mean to twist or convulse).
'beg'+'urgent'='begurgent'
'begurgent' with letters rearranged gives 'GUTENBERG'.
'for' is the link.
(Other definitions for gutenberg that I've seen before include "He invented movable-type printing" , "German printer of a 15th century Bible" , "Pioneer printer" , "Publisher" , "German printing pioneer" .)