602 MODERN STEAM PRACTICE . with emery , but the plan was bad , inasmuch as uic snicui gimy particles became imbedded in the metal , causing great friction and … Fig . 468 . — Piston with Circular Steel Spring , & c . a , Piston , b , Junk ring , c , Packing rings , d , Circular Steel spring . e , Cotter for the piston rod . deterioration of the surfaces . When all the rings are adjusted , and properly finished on their surfaces , thin slips of paper are…
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