Salt Lake Tribune | 1919-03-09 | Page 33 | Dinwoodey Explains Piston Ring Value

0I1IDEY EXPLAINS PIST1 HI VALUE Inventors and mechanical engineors have endeavored to solvo in all manner of ingenious ways the difficulties that surround tho making of a truly efficient effi-cient and practical piston ring, according accord-ing to Sales Manager Dinwoodoy of tho Capital Electric company, local distributors dis-tributors of Leak-Proof piston rings. "Tho Leaf-Proof piston ring," explains ex-plains Binwoodey, "is not an accident acci-dent or an experiment. One by one the deficiencies and weaknesses of other tvpes of rings were studied and successfully suc-cessfully eliminated, untn the design' was evolved, and incorporated only their good points, and produced tho condition of protect and permanent leak-prpofness never before obtained in service without sacrificing either simplicity sim-plicity or strength. "Tho value of the concentric form of ring was recognized, but in order to overcome the. inequal forces acting at different sections in tho single ring, ono concentric ring was placed inside of another (both rings being of absolutely absolute-ly equal strength), with their openings diametrically opposito, or ISO degrees apart. Thus, inner ring's stresses are aetiug from whero the stress is Tactically Tacti-cally nothing, around to where the stress is eighty. In the outer ring the stress is acting in opposito direction, making a perfectly balanced, unit, concentric con-centric ring of equalized pressure throughout novor before obtained. "The Leak-Proof design preserves tho good qualities of the concentric ring and avoids tho bad ones of the eccentric ring by providing perfect bearings up on tho sides of the piston grooves and a close fit upon their bottom. bot-tom. Not only is the ring perfectly gas-tight, but it serves to prevent tho passage of any surplus lubricating oil into the combustion chamber of the cylinder, where it becomes burned and creates excessive carbon deposits."