(under the class definition) Vehicles with driving devices consisting of one or more traction-wheels not constituting the main supporting-wheels of the vehicle. The traction-wheel is frequently mounted on a frame pivoted at one end to the vehicle body or running-gear.
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11+, for motor carrying attachments which may have traction wheels.
196, for a motor vehicle which includes one or more ski-like or runner members and wherein the vehicle is provided with at least one surface-engaging propulsion element and further wherein the element comprises a traction wheel.
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105, Railway Rolling Stock, especially 73, for locomotives and traction regulators therefor.
