Brainer, Your sentence is a quote from the play "Silent Woman" written by Ben Johnson in 1616. We'll have our men blanket 'em i' the hall. It refers to a kind of punishment where people hold a large blanket and throw a person into the air, catching the person and throwing him into the air over and over again. (Actually, it sounds like fun to me!)

blanket:(v)(formal)to cover s.th completely with a thick layer.