. Science of railways . ■ \^%t,^*i^. Fia:. 4 Method of Applying Supplemental Springs—Mitchell Metallic Packing 392 LOCOMOTIVE APPLIANCES. Directions for Applying—1. Do not apply packing to rodsthat are cut or scored. 2. Packing may be applied to rods that are worn smoothand oval when not worn to exceed 1/64 per diametrical inchof the original diameter. 3. Bore packing 1/128 of an inch larger than the largestdiameter of the rod.

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