Douglass Coe Computing Machines

Douglass Coe Computing Machines was a North American company founded in 1886 by Douglass Coe. It's primary products were analogue and mechanical computational equipment such as billing machines, adding machines, calculators, and differential analyzers. It also produced typewriters, teleprinters, tabulation equipment, duplicating machines, and teleautograph machines. The company existed from August of 1886 to 1926, when it was merged into Coe Laboratories, Inc., with it's 40 year run as an independent entity being the longest of any of Douglass Coe's original companies. Upon it's eventual merging into Coe many of the brands and assets of the company were retained, with some still being used well into the 21st century.

History
In the early 1880s, the Coe family was seeking new businesses to invest in. Douglass Coe, the family's only son, already owned a majority share of Sheffield Billing Machines, a New England company involved in the manufacturing of calculators, billing machines, cash registers, and other mechanical devices targeted at the finance industry.