Following to death of his mother Eva Agatha in 1849, he inherited Nuutajärvi mansion and started developing it by draining wetlands, acquired Ayrshire cattle and engaged in forestry.

The mansion area included also Nuutajärvi glassworks which was at the beginning leased to another operator, but in 1851 Törngren started took lead of the factory.

One of them was Prussian-born bookkeeper Georg Franz Stockmann, who run Törngren's glassware shop in Helsinki and later developed his own business from it.

Törngren met his old friend Gustaf Wasastjerna, who had bought a nearby lot of an old ironworks at other side of the rapids in Tampere and planned to convert it into engineering works.

The men decided to start business with joined forces, and Törngren applied for moving the location of his industrial rights to the other side of the river.

By the merger the men aimed to attract investors, but eventually they did not manage at gaining more capital because limited company concept was new in Finland, and Törngren and Wasastjerna finally owned 95% of the shares.

After an assent of the city elders, Uusimaa Province governor and Senate Manufacturing Board, he was granted the permission for the business on 4 March 1865.

Törngren made an arrangement in which the company ownership was transferred to Tampere Linen and Iron Industry to which he owed 435,000 marks.

Nuutajärvi glassworks and Laukko mansion were sold in an auction and Törngren settled in Helsinki, where he ran a forwarding agency.

Due to new fire protection regulations, the material had high demand and it was applied on roofs in urban areas and railway stations.

Törngren initiated installing Supreme Court; his proposal was approved, but implemented much later, after the Finnish Declaration of Independence.