My car window stopped working, so I replaced the regulator. A bit fiddly, but fairly straightforward. I'd never seen one before, never having needed to.
They (or this one anyway) have a motor with a right angled gearbox slowly turning a capstan, around which was wound several turns of tensioned steel cable. It occurred to me that this could form the basis of a winch for my loft ladder.
Has anyone used a car window regulator as a winch?