Design by Theo Ruth (1957). Theo Ruth adapted a simple principle used in African seating into his designs. Without the use of a hammer, nails, screws or screwdriver, he constructed these chairs out of 2 interlocking basic parts. Both, seat part and back part have 2 forks like legs that lock inside each other while Newton does the rest. Ruth´s Penguin Lounge chair and the “Kongo” chair (1952), are still considered furniture icons of the 50’s.