Originally cabbage was always sliced and not shredded. Cabbage head was usually halved or quartered and the knife did the rest. When larger quantities of cabbage were processed a wooden mandoline slicer was used.
Mandoline Slicer
You could fit the whole cabbage into the movable box and the diagonal knives were about 8 inches long. Such a device would not shred cabbage, it will slice it from left to right into long strips like spaghetti. This is how cabbage was sliced for centuries. As we invented plastics and cheaper ways of processing, a lot of clever devices like rotary drums appeared on the market. They looked cute and were cheap, but were too small to slice the cabbage. Cabbage was shredded, almost diced into little pieces. You could not pick up with tongs just a piece of original sauerkraut, it was like a spaghetti clinching together. Modern shredded sauerkraut can be picked up with a
spoon.