Th. Mann & Co.
Th. Mann & Co. was a German piano manufacturer and musical-instrument retailer based in Bielefeld, active from 1836 until the mid- to late 1930s as a producer and formally acquired in 1942.
Last updated October 14, 2026
AI crawler reads
2requests
1companies- Anthropic2
- Profile
- 2
- Controversies
- 0
- JSON · MD
- 0
- First read
- Nov 4, 2026
- Latest read
- Nov 4, 2026
From this site's server log
Overview
Th. Mann & Co. was a piano-making company from Bielefeld, Germany, whose origins reached back to a workshop founded by Christian Wilhelm Volkening in 1836. The business produced upright pianos and grand pianos, sold pianos and harmoniums, and operated temporary branches or sales offices in several nearby Westphalian towns, including Gütersloh, Herford, Detmold, Rinteln and Paderborn. It became one of the better-known piano manufacturers in the Bielefeld area during the nineteenth and early twentieth centuries. Volkening, a trained instrument maker who had learned in Vienna under Andreas Streicher, established his workshop in Bielefeld with a small staff. His early instruments attracted attention beyond the city. He exhibited at the General German Trade Exhibition in Berlin in 1844 and at the first international industrial exhibition in London in 1851. A grand piano made by Volkening around 1840 was reportedly played by Franz Liszt during a concert in Bielefeld in 1841; that instrument is now held by the Museum of Musical Instruments of Leipzig University. Volkening also claimed an early role in the development of the small or baby grand piano. The key transition came after Volkening's death in 1858, when Theophil Mann took over the workshop. Mann had trained in carpentry and piano construction and had worked with instrument makers and organ builders in Hanover and Hildesheim before joining Volkening in 1849. He broadened his technical knowledge through visits to workshops in Leipzig, Dresden, Bautzen, Munich and Stuttgart. Under his management, the business operated as the Pianoforte-Fabrik Th. Mann and focused on technically refined, well-constructed instruments made by trained workers. The factory expanded substantially during the second half of the nineteenth century. A new building at Oberntorwall 29 was completed in 1868, and production later moved into larger premises on Friedenstraße, where steam power was introduced from 1875. The company's exhibition activity helped establish its reputation. It received recognition at German and international exhibitions, including medals in Vienna in 1873, Düsseldorf in 1880 and 1902, Amsterdam in 1883, Antwerp in 1885 and Brussels in 1888. By 1883, the company employed approximately 70 workers. Its instruments were promoted for their solid construction, refined tone and developing technical features. Hermann Steinhaus joined the firm as a partner in the early 1870s, after which the business commonly traded under the name Th. Mann & Co. or Th. Mann & Cie. The company also developed patents and utility models relating to piano soundboards, bridges, string attachment, tuning stability, sound-wave collection, keyboards and other construction details. These inventions reflected the competitive engineering culture of the nineteenth-century piano industry rather than a simple retail identity. Theophil Mann's son, Theophil Mann Jr., later assumed technical leadership. He studied piano construction at Steinway & Sons in New York and with C. Bechstein in London and Paris. Before the First World War, the factory reportedly employed about 100 workers, produced an instrument approximately every five hours and exported by rail to Britain, Belgium, Italy, other European destinations and overseas markets. The First World War and the resulting loss of foreign markets weakened the company. In 1930, operations were consolidated again at Oberntorwall 29. After Hermann Steinhaus died in 1933, Theophil Mann Jr. became sole owner. Following his death in 1935, his wife Helene Mann continued the business. The brand marked its centenary in 1936, although the piano factory's productive life was nearing its end. Production is generally reported to have stopped in 1938 or 1939, with surviving instruments reaching at least an opus number of about 20,000 in 1938. Max Porth acquired the factory in 1942, but the manufacturing operation did not continue as a significant independent producer. The buildings were reportedly destroyed during the Second World War, and post-war aerial views show the former main site as vacant. The Th. Mann & Co. name nevertheless continued for a time as a trademark. Historic instruments bearing the name remain in museum collections, including collections in Leipzig, Cincinnati and Brussels.
History
Christian Wilhelm Volkening founded a piano workshop in Bielefeld in 1836 after training with Andreas Streicher in Vienna. The workshop initially operated on a small scale but gained recognition through exhibitions. Volkening displayed an upright and a grand piano in Berlin in 1844 and exhibited in London in 1851. One of his grand pianos, made around 1840, was associated with Franz Liszt's 1841 Bielefeld concert and is preserved in Leipzig. Theophil Mann joined Volkening in 1849 after earlier training in carpentry, piano construction and organ building. He supplemented his practical experience with study visits to major German piano workshops. After Volkening died in 1858, Mann assumed control and continued the business as the Pianoforte-Fabrik Th. Mann. His priorities were skilled labor, consistent construction quality and the manufacture of instruments with a strong musical tone. The company moved into a purpose-built facility at Oberntorwall 29 in 1868. In 1872, Hermann Steinhaus became a partner, and the firm began using the Th. Mann & Co. or Th. Mann & Cie. name. New facilities were erected on Friedenstraße from 1875, and steam power increased manufacturing capacity. The business also maintained an instrument shop and temporary branches in several Westphalian towns. Exhibitions were an important part of the firm's commercial strategy. Th. Mann instruments received awards in Vienna, Düsseldorf, Amsterdam, Antwerp and Brussels between 1873 and 1902. The company's product range included upright pianos, grand pianos and pianinos, while its technical work generated patents and utility models for soundboards, bridges, tuning, string attachment, keyboards and sound-wave management. The firm employed around 70 people in 1883 and approximately 100 shortly before the First World War. Theophil Mann Jr. studied at Steinway & Sons in New York and at C. Bechstein establishments in London and Paris before becoming technical manager in 1905. Under the later family management, the company exported to several European countries and overseas. War-related disruption and the loss of foreign markets reduced its reach, and production was consolidated at Oberntorwall 29 in 1930. Following Steinhaus's death in 1933, Theophil Mann Jr. became sole owner. His death in 1935 was followed by the management of his widow, Helene Mann. The company celebrated its centenary in 1936. Production appears to have ended around 1938 or 1939, although the trademark survived beyond the manufacturing period. Max Porth acquired the factory in 1942. The buildings were subsequently associated with wartime destruction, and the former site appears to have become vacant after the war. Instruments carrying the Th. Mann & Co. name survive in public collections in Germany, Belgium and the United States.
- 1942
Factory acquired by Max Porth
[1]Berlin merchant and piano dealer Max Porth purchased the factory. The manufacturing business did not remain a major continuing producer.
- 1936
Centenary celebration
[1]The firm marked its 100th anniversary with an extensive festival program.
- 1933
Theophil Mann Jr. becomes sole owner
[1]Hermann Steinhaus's death ended the partnership and left Theophil Mann Jr. as sole owner.
- 1930
Operations consolidated
[1]After postwar market disruption, the company's factory operations were reunited at Oberntorwall 29.
- 1905
Theophil Mann Jr. assumes technical leadership
[1]The founder's successor retired and his son, trained at leading American, British and French piano institutions, took over technical management.
- 1888
Brussels exhibition award
[1]The company received a gold medal for pianos at the World's Fair in Brussels.
- 1883
Workforce reaches approximately 70
[1]The expanding factory employed about 70 workers and won a gold medal at the Amsterdam Colonial Exhibition.
- 1879
Factory fire
[1]A fire broke out in the engine room but was contained by local fire brigades without reported extensive damage.
- 1875
Steam-powered expansion
[1]New buildings were begun on Friedenstraße and production was converted to steam operation.
- 1873
Recognition at the Vienna World Exhibition
[1]The company presented three pianos in Vienna and received a medal for merit.
Products and positioning
A technically ambitious German piano maker positioned around robust construction, refined tone, skilled workmanship and exhibition-recognized engineering. The company combined manufacturing with regional musical-instrument retail and developed a reputation that supported exports across Europe and to overseas markets.
Pianos · 1836
Upright pianos and pianinos
Uprights and pianinos were the company's principal products and formed the basis of its exhibition success and export trade. Nineteenth-century examples included straight-, cross- and diagonal-strung constructions. The company promoted these instruments for their durable construction and characteristically refined, soft tone.
Pianos · 1836
Grand pianos
The business produced grand pianos from its earliest Volkening period onward. A grand made around 1840 was associated with Franz Liszt's 1841 concert in Bielefeld and is preserved in Leipzig. Later Th. Mann & Co. grand pianos incorporated the firm's patented approaches to soundboards, bridges, keyboard construction and tuning stability.
Keyboard instruments
Harmoniums
In addition to manufacturing and selling pianos, the business operated as a musical-instrument shop handling harmoniums and related keyboard instruments. The available reference material does not identify specific harmonium models or a separate harmonium product line.
Brand decisions
1930
Consolidation of factory operationsStrategyBackground
The First World War and the loss of access to international markets weakened the company's operating structure.
Action taken
Factory operations were reunited at the Oberntorwall 29 site.
Aftermath
The consolidation preceded the final decline of manufacturing during the late 1930s.
1875
Conversion to steam-powered productionStrategyBackground
Growing demand and factory expansion created pressure to increase production capacity.
Action taken
The company erected additional buildings on Friedenstraße and converted manufacturing to steam operation.
Aftermath
The change supported workforce and output growth during the firm's late-nineteenth-century expansion.
Sources1 sources
Cite this profile: Cite the canonical profile. /brand-wiki/th-mann-and-co · Editorial policy · How profiles are compiled