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Heinrich Vollmer

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Heinrich Vollmer was a prominent German designer of small arms. Small arms include tools like pistols and machine guns. Vollmer was born in 1885 in Altdorf. He lived until 1961 in Tübingen. He spent his career improving the mechanical efficiency of weaponry. His early work focused on manufacturing components for the German copies of the Maxim gun. This occurred during the First World War.

Vollmer was an expert at solving problems related to ammunition feeding. He first created a beltless feed system for the MG08/15. This changed how the gun received its ammunition. He later designed a unique system for the MP/18/I submachine gun. This design used a 60-round circular spool magazine. A soldier would carry this spool on a loop on his hip. A flexible hose connected the hip-mounted spool to the gun itself.

During the early 1920s, Vollmer began designing his own submachine guns. His early models included the VPG, VPGa, VPF, and VMP1925. The VMP1925 featured a wooden handgrip and a 25-round drum magazine. This magazine connected directly to the firearm. The Reichswehr, which was the German military, tested the VMP1925 in secret. The Versailles Treaty prohibited the Reichswehr from having submachine guns in service. However, the German police were allowed to carry a small number.

Vollmer received secret funding to continue his research and development. This led to the VMP1926, which lacked a cooling jacket. He then created the VMP1928, which used a 32-round box magazine on the left side. His final model in this series was the VMP1930. This model featured a major mechanical innovation. He designed a telescoping main spring assembly. This assembly made the firearm more reliable. It also made the gun easier to assemble and disassemble in the field.

Vollmer applied for a patent for this telescoping spring in 1930. The patent was granted in 1933 as DRP# 580620. His company, Vollmer Werke, produced approximately 400 of these units. Most of these guns were sold to Bulgaria. In late 1930, the Reichswehr stopped providing financial support to Vollmer. Because of this, he sold his design rights to the Erfurter Maschinenfabrik, also known as ERMA. ERMA continued to develop his designs, specifically the EMP.

Vollmer also worked on larger machine guns. His work in this area began as early as 1916. In 1927, he designed the VMG 1927. He later worked with Mauser to develop the MV 31, or Mauser-Vollmer 1931. This specific model was not adopted for official service. However, Vollmer contributed to the development of the MG 34 general-purpose machine gun. The MG 34 was based on the Solothurn S2-100, also known as the MG 30. The MG 34 eventually equipped the German military in very large numbers.

Between 1935 and 1938, Vollmer worked on a series of prototype assault rifles. These were known as the Vollmer M35. These rifles used an intermediate cartridge. He co-developed this cartridge with Gustav Genschow & Company, or GECO. His career shows how mechanical innovations can change the way technology is used. His work on springs and feeding systems influenced many future designs. He remains a significant figure in the history of small arms engineering.

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