The company was among the first to make lightweight cars. Its chief engineer Thomas Elliot designed the curved-side car, a lightweight model that used curved steel plates (not conventional flat steel plates) in body construction. Instead of the floor, the side plates and side sills bore the bulk of the weight load. Longitudinal floor supports were no longer needed, which made the cars lighter than conventional cars. The first cars of this type were sold in 1922.[1] For instance, the Red Devil weighted only 22 short tons (19.6 long tons; 20.0 t).[2] Curved-side cars were also called "Balanced Lightweight Cars".[1]
In 1929, the company designed new lightweight partially aluminum low profile high-speed coaches for the electrified Cincinnati and Lake Erie Railroad interurban that operated between Cincinnati, Dayton, and Toledo. Twenty were purchased, painted bright red, and called Red Devils by the C&LE. These interurban cars, whose open country speed could reach 90 mph (140 km/h), were a forerunner of today's high-speed trains. Both the carbodies and new design small wheel low riding trucks were well adapted for high-speed running on light rail rough track. In 1939, the C&LE abandoned operation, and the Red Devils were sold to the Cedar Rapids and Iowa City Railway (CRANDIC) in Iowa and the Lehigh Valley Transit Company in Pennsylvania. They continued to operate successfully and well into the 1950s.[3]
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