Patent for a new and improved coupling for railroad cars. This design "consists in a shaft journaled at its lower end in the ordinary draw-bar and at its upper end in a bracket . . . and in the combination therewith of a brace . . . adapted to support the lower end of said shaft, a hook placed between the brace and the draw-bar, and a spring surrounding the shaft and arranged to hold the shaft and hook normally . . . It also further consists in . . . the hook, . . . a spring-actuated uncoupling-rod extending through a bracket . . . and a retaining-latch. . . adapted to hold the said rod in a retracted position" (lines 22-37).