604 MODERN STEAM PRACTICE . on , form a very good attachment , being very secure , having no parts to work loose , while the pressure is taken on the flanges , thus making this mode for securing the piston on the rod complete in its simplicity . The piston is held in position by the junk ring , the … 0 , ? ' t ' TT ' * * ' cq [ _ _ □ ssfi L _ I — i O ! cf , U Figs . 472 , 473 . — Crossheads and Guide Blocks . , Crosshead . b b , Guide blocks . c , Piston rod and cotter . d , Gudgeon . E , Pin for taking pump ram . The crossheads are of wrought iron , having a part bored out for receiving the…
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