CPT (United States) - AllCarIndex

Chicago Pneumatic Tool Company, established in 1906 in Chicago, Illinois, was primarily recognized for its production of air compressors and pneumatic tools. In the same year, the company ventured into the automotive sector by manufacturing a limited batch of 50 two-seater runabouts. These vehicles were designed specifically for the use of the company's travelers and were equipped with 22 horsepower, two-cylinder engines and solid tires.

From 1910 to 1918, Chicago Pneumatic Tool Company expanded its automotive offerings by producing delivery vans and trucks. These vehicles were marketed under the names Duntley and Little Giant, reflecting the company's diversification into the commercial vehicle market during this period. The company's foray into automotive manufacturing was relatively short-lived, as it ultimately returned to its core focus on pneumatic tools and equipment.