Armed robberies at SA restaurant, pub

A man armed with a rifle has robbed a winery restaurant while another held up a pub at knifepoint in Adelaide.

The first suspect threatened staff at the St Francis Winery Restaurant in the southern suburbs before fleeing with cash late on Wednesday night, police say.

Another man held up staff in a gaming room in Bartley Tavern in Adelaide's northwest before getting away with cash early on Thursday morning.

No one was injured and both suspects remain on the loose.