Thrall Car Manufacturing Company

Kenneth H Smith

Keith J Hallam

Walter J Marulic

Railroad hopper car end slope collar casting

Railroad hopper car cross ridge collar casting

An aluminum hopper car having a center sill hood which uses aluminum collar castings to connect cross ridge hoods which intersect a center sill hood, and to connect the center sill hood with intersecting sloped car end walls.

Aluminum hopper car with cast collars interconnecting intersecting

A railroad single axle truck having a pair of wheels with one wheel at each end of the axle, the truck including a frame having a pair of longitudinal spaced apart parallel horizontal side tubes of substantially equal length, the frame also including a pair of transverse spaced apart parallel horizontal beams of substantially equal length positioned normal to and substantially planar to the longitudinal side tubes, the beams being spaced apart for a distance longer than the length of the tubes with the side tubes positioned between the beams, and the end of each side tube having a joining member telescoped thereto and fixedly joined to the side tube with the member having an outer end fixedly joined to the beam.

Single axle railroad truck with frame improvements

A dual lading railroad car which can carry solid, granular lading in hoppers at each end of the car and a liquid lading in a tank located in the center of the car between the hoppers. Only liquid lading can be carried in one direction and only solid, granular lading can be carried in a different or return direction, or both such ladings can be carried simultaneously in the same direction. Phosphate rock can be carried in the hoppers and molten sulfur in the tank. The exterior of the car looks substantially like a conventional covered hopper car since the tank is fully enclosed by the car walls and roof.

Growing community of inventors

Powder Springs, GA, United States of America

Kenneth H Smith