Patent for a new and improved coupling for railroad cars. This design consists in "the combination, with the coupling-head provided with a central tongue and a socket on each side of the tongue, and the forwardly-projecting spring-actuated hooks pivoted to the said head, with their rear ends abutting against the bottoms of the sockets and provided with beveled front edges of the coupling-socket provided with catches for the said hooks to engage with automatically, and the vertical spindle journaled in the central tongue and provided with flexible connections wound upon it" (lines 86-97).

Patent for improvements in construction and engineering of elevated railways