Swing.

Patent for a new and improved swing. This design consists in "[t]he combination, with the two folding frames, provided with jointed braces, of the horizontal cross-bars secured to said frames, the swinging arms pivoted to said bars and also to the car, cross-bars secured to these arms, [and] the curved levers" (lines 95-100). Said curved levers are hinged to "the cross-bars, [and] the crossed ropes or chains [are] connecting the short arms of said levers to the cross-bars, and the pull-cords [are] attached to the long arms of said levers and [are] extended to the seats of the said car" (lines 1-5)