at first , until the inherent elasticity is nil , and then the wedge and spring are pressed up accordingly . The springing of the ring is effected by turning it nearly ] /q inch larger in diameter for ordinary pistons ; a part is then cut out , so that when the ring is compressed the joint is hard… … Figs . 459 , 460 , 461 , 462 . — Piston Rings , showing the Wedge Pieces and Springs . a , Piston rings . B , Wedge pieces . c , Spring with set bolts and nuts . throughout the ring ; it is then in its best working order . As it wears the elasticity is destroyed , and the ring is expanded by the…
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