The Imperial Brass Manufacturing Company produced a wide array of products including brass plaques, fittings, couplers, gas regulators, and everything welding. Frank McNellis learned brass manufacturing at a young age working for David M Ford. The nineteen-year-old McNellis then formed a partnership with E S Turner in 1871. This company became the E S Turner Brass Works. Frank established the Imperial Brass Manufacturing Company with his son in 1905. Charles McNellis became president when his father died in 1914.
Imperial merged with the Eastman Manufacturing Company in 1961 forming the Imperial Eastman Corporation. The company is now part of Stride Tools LLC.