STATIONARY ENGINES. 265

The piston rods of both cylinders are connected to the beam by

Fig. 173.—Crosshead.

A, Cast-iron crosshead. b, Gudgeon. c, Collars . d, Piston rod. E, Jib and cotter.

cast-iron crossheads and wrought-iron side links, and the vertical

Fig. 174.—Main and Back Links for Parallel Motion.a, Main link. B, Distance pillar. c, Jibs and cotter. d d, Plates. E, Back link.f, Cotter for brasses.