After Lyhmann sold the facility in 1882, he lived at "Birkerød" for some time. Here he had a small shop where he made grinding and polishing machines for knives. He kept poultry and bees, and made and sold honey separators. He also sold and bought ships. Lyhmann became a businessman in Oslo, where he manned the counter. Lyhmann married twice. He met his second wife through an advertisement in a newspaper. She was 14 years younger than his eldest daughter from his first marriage. They had four children; the youngest, his son Gaute, was born in 1907. Mr. Lyhmann was then 82 years old.