Inventor of global disc part housing wheel-locking mechanism (9)

I believe the answer is:

pratchett

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'wheel-locking mechanism' is the definition.
I know nothing about this answer so I can't judge whether this works.

'inventor of global disc part housing' is the wordplay.
'inventor of global disc' becomes 'ratchet' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'part' becomes 'pt' (I've seen this in other clues).
'housing' indicates putting letters inside.
'ratchet' put into 'pt' is 'PRATCHETT'.

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I've seen this clue in The Telegraph.

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