The above engraving represents a truck for railway cars eminently adapted for the prevention of the dreadful accidents that generally happen when a wheel or axle breaks. No person, who only even glances at this contrivance, can fail to understand its efficiency for the purpose indicated, and a brief description will thoroughly explain its intention, A represents the,usual framing, which secures the different parts firmly together- B B are the wheels, which are four in number, two to each axle. So lar the truck is identical with the one usually adopted on ailroads but the peculiarity that makes it to differ from all others, consists in the employment of a metallic casing, which surrounds each pair of wheels, and also the axle, so effectual!*", that, shtfuld'etfflifef the axle o*-the wheeta (uneven both) break, no untoward result will occur, but the car can continue its career with perfect impunity. This metallic casing for thewheels may be either a complete or partial covering, as desired. In the one instance the wheels will be as represented, entirely covered by the casing, C, and in the other only partially so by the casing, C, when the wheel B, will be exposed to view as shown here. Each axle is also surrounded by a metallic tube which is firmly attached to the wheel casing at its extremity. This arrangement allows of a separate axle to each wheel, if such a mode of construction should appear desirable. In case a wheel may happen to break, it is hardly possible tor it to come in twain, but even if such a casualty occurs, the wheel casing, from being flat at the lower part, will find a bearing on the rail and thus support the car. "For further particulars respecting fe"~ia-vention which was patented last year, application to be made by letter or otherwise, to A. L. Finch, Britain, Ct.