Adolf Törngren

After Törngren had decided to start business with Wasastjerna, he had sold the lot at Tammerkoski. His wife's younger brother Fredrik Idestam had built there a groundwood mill, which he later moved to Nokia. In 1877 Törngren founded company Tampereen Asfaltti- ja Kattohuopatehdas Oy ("Tampere Asphalt- and Roof Membrane Works") that bought the old factory and converted it for asphalt membrane production. Due to new fire protection regulations, the material had high demand and it was applied on roofs in urban areas and railway stations. Törngren grew the business aggressively, and once again fell into financial troubles. He sold the business and moved to Pirkkala, where he developed grain drying concepts, which were granted a patent.

Törngren was married in 1849 to daughter of Bergmeister Gustaf Idestam, Sofia Charlotta (1830–1913). Their son Adolf Törngren Jr. became a notable politician. Törngren spent the last years of his life in Haapaniemi Manor, where he died in 1895.

Törngren took part in a Finnish industrial development planning committee, installed by the Senate of Finland in summer 1856. In 1862 Törngren became selected to so-called January Committee by Nobility. During Diet of Finland 1863–1864, he represented his family as member of Estate of Nobles. He had liberal views, and he supported development of railway network. Törngren initiated installing Supreme Court; his proposal was approved, but implemented much later, after the Finnish Declaration of Independence.