Complex sentence: They are serrated knives are able to cut soft bread without crushing it; one was exhibited at the World's Columbian Exposition in 1893 in Chicago by the Friedrich Dick company (Esslingen, Germany).
Split into simpler sentences: They are serrated knives are able to cut soft bread without crushing it. One such knife was exhibited at the World's Columbian Exposition in 1893 in Chicago by the Friedrich Dick company (Esslingen, Germany).