In 1892 Charles Heisler received a patent for a new kind of geared locomotive. Equipped with twin canted cylinders, the engine utilized a drive shaft to power outboard axles and connecting rods to power the inboard axles. As a result of this 'vee-twin' arrangement, the Heisler was one of the fastest geared steam locomotives, providing more power with lower operating costs. Over 600 Heislers were produced from the 1890's until 1941, when the Heisler Locomotive Works closed its doors. This reproduction of the company's illustrated catalog dates from the 1920's. It shows the full line of Heisler products and presents a compelling argument for their use.