Chimney cleaner had to cover tip of chin and part of face (5,4)

'part of face' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe you can see an association between them that I can't see?

'chimney cleaner had to cover tip of chin' is the wordplay.
'chimney cleaner' becomes 'sweep' (I've seen this before).
'to cover' means one lot of letters goes inside another.
'tip of' says to take the final letters.
The last letter of 'chin' is 'n'.
'had' enclosing 'n' is 'hand'.
'sweep'+'hand'='SWEEP HAND'

'and' is the link.

Can you help me to learn more?