The site was chosen by the Department of Defence in 1909. Commenced operations producing arms in 1912, officially opened 8 June 1913.
From 1924 parts for Vickers .303 machine guns were produced. Expansion in 1928 enabled various products for the civilian market to be produced. During the 1930s staff were reduced to 250 (from 1,300 in 1915/16) and the factory concentrated solely on goods for the commercial market.
Production of arms at Lithgow ceased around 1927 after WWI, then recommenced late in 1940 after the outbreak of WWII. Production continued after WWII until at least late 1950s, so it is most likely the factory turned to sewing machine production in the 1927 to 1940 period when arms were not being produced.
Made cases, hand cranks, treadles and electric sewing machines.