ountered in mining operations . The single - acting beam engine is generally adopted for pumping the water from great depths . These great beams of cast - iron — and in some cases of wrought - iron plates , stiffened with angle or T - iron — are supported by pillow blocks , resting on a wall of… … Fig . 87 . — Crosshead and Side - links of Parallel Motion for Piston - rod of Cornish Engine . a , Crosshead . b , Piston rod . c , Loose collar . d , Key . e , Links , f , Beam gudgeon . g , Bearings for parallel bars . and parallel motion ; and in some instances the crosshead of the piston - rod…
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