society > occupation and work > equipment > machine > machines which impart power > engine > steam engine > [noun] > parts of > levers
working beam1744
beam1759
lever1759
side lever1804
lever-beam1824
walking beam1824
sway-beam1839
grasshopper-beam?1865
1824 ‘R. Stuart’Descr. Hist. Steam Engine 159 As the lever-beam was dismissed, he communicated the motion to the paddle-wheels by a rod and crank attached to the piston.