Sewell Cushion Wheel Company
Motor-driven fire apparatus sells from $5,000 to $15,000 per unit and practically no restriction is placed on speed limitations. A cushion of soft rubber, especially designed and compounded and applied so that its resiliency constantly saves the apparatus from road shocks and vibrations, describes the Sewell cushion wheels. The illustrations show both types of tires, the single and the dual. The inside wheel in each case is carried on a series of trusses of high grade rubber which occupies the space between the wheel and the outer felloe. Side flanges, also of rubber, encircle the wheel on both sides and connect the inner and outer felloe making the space containing the rubber cushion absolutely proof against air, dust and grease. These rubber flanges expand and contract between the inner and outer felloes as the cushion acts. There are two steel bands on each side of the wheel they are bolted through holding the side rubber flanges and the two wooden felloes in place, these hands expand partially over the rubber cushion from above and below thus preventing lateral or side-motions. It will be noticed from the construction of these wheels that no connection occurs between wood or wood and iron, except through rubber and in this way any friction or wear is avoided. Sewell cushion wheels have been in practical use for the past six years. The first set was sold to the City of Highland Park, Mich., and after two years’ thorough testing they were specified on two new cars ordered for this department. More than thirty cities in the United States have specified these wheels.