provision is made on the motion bars . The guide blocks have occa - sionally been secured to the crosshead with stud bolts , this plan beingadop - Fig . 477 . — Crosshead showing Oil Receivers . ted when blocks have been a , Crosshead . b b , Oil receivers . c , Piston rod and cotter . made of… … Fig . 478 . — Crosshead with Guide Blocks secured with Bolts . A , Crosshead . b b , Guide blocks . C , Piston rod and cotter . d , Eye for pump ram . e , Gudgeon . The motion bars ( Figs . 479 , 480 ) are made of scrap iron steeled or case - hardened . Sometimes solid shear steel bars have been…
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