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Show PISTON RINGS ARE VITAL ENGINE PART Moore Electric Company Will Snow This Device at Big Auto Exhibition. Don 't fail to see the display of the Moore Electric company at the auto show. They will feature the double seal piston ring. You will vrant to see and learn how this important engine device works. An internal combustion engine is only as good as its piston rinss. Speaking of the double seal the manager man-ager of tho Moore Electric companv said: Double seal rings are made of special spe-cial gray iron ring material, the best that is known to tho trade and are, therefore, very durable and elastic. A special formula that takes a vcrv high polish keeps the' ring from" getting get-ting rough and cutting the cvliuders. A formula that is hard enough to retain the elasticity of the ring" and soft enough to prevent scoring the cylinder even though the ring should 'break. Every ring is scrupulously inspected and tested to obviate the possibility of the slightest mechanical flaw. 'Double seal rings are so constructed con-structed that the maximum tension rests against the wall at the upper edge of the ring. In other words, against the wall at the top outer edge of the L-shaped part of the ring'; This lias the same effect as the tension in a saw used in lumber mills tension alwavs being the maximum at the cutting edge of the saw. So in double seal rinus the maximum tension rests ,-igainst the wall where pressure first conies against the ring. Double seal rings exert a uniform pressure against the cylinder wall."' |