This should explain the bracket.
I bought the hoist a fair while back as it was on special and thought it would come in handy either here, or if we lost our house in the new place.
Finally I could mount it here after seeing our house isn't in the line of the new highway......yet.
Next job will be to cut the rails on the walkway it's mounted beside and remount them in a removable fashion. This will make moving bulky items upstairs (or down) far easier.