a lot of these old cards are themed with the "before sewing machines life was drudgery, now that you have a sewing machine life is good!" concept.
Remember they were at the early stages of convincing people that a machine the cost of a mid level car today would be worth going into debt for years over.
Many of the early ones also focused on #'s of machines made showing that they are reliable and the "everybody is getting them" idea
Early automobile ad's were similar, comparing the benefits of cars over horse drawn carriages.
Once people adopted the sewing machine in concept the ad's change to the "ours is better than theirs" theme.