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Pneu-mat′ic car.

A car driven by compressed air contained in reservoirs, which are filled by means of air-pumps. This application of compressed air is important as affording a means of dispensing with animal power on street railroads, and has been applied in practice with a certain degree of success. The cars employed in Chicago have four hollow tanks between the ceiling and roof, having a capacity of 150 cubic feet. The air is condensed to a pressure of 260 pounds to the inch, and drives two small engines, one on each side, at one end of the car. These are controlled by means of a wheel adjacent to the brake-wheel and immediately under the hand of the conductor. See Street-car.

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Chicago (Illinois, United States) (1)

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