Patent for a new and improved coupling for railroad cars. This design "relates to a car-coupling constructed with draw-heads having stationary hooks and recesses in their sides, and provided with pivoted hooks held in place by springs, and provided with a trip plate and lever, and with chains and a lever, whereby the cars will couple themselves when run together, can be readily uncoupled, will uncouple themselves when thrown from the track, and can be prevented from coupling when run together" (lines 23-32).