Chair in an American saloon (5)
I believe the answer is:
sedan
This clue is a double definition.
'chair' is the first definition.
(sedan chair is a type of chair)
'an american saloon' is the second definition.
(US term for a saloon car)
'in' is the link.
(Other definitions for sedan that I've seen before include "Saloon-car" , "Battle in 1940" , "Palanquin; car" , "Andes (anag.)" , "Old carrying chair" .)