Locomotive operation; a technical and practical analysis (1904)
Henderson, G. R. (George R.), b. 1861 · Chicago, Railway Age · leaf 230
nt. Wellington refers tonumerous tests made which indicated that a bath of oil wasnmch superior to a syphon or pad—-the friction being onlyabout one-sixth as great. The ordinary friction obtained byexperimenting with cars was found at slow speeds to be .09 to.12 of the pressure for loads of from 30… … Fig. 65. as the diameter of the journal, the lower value obtaining withloads of about 300 pounds per sc[uare inch of projected journalarea, and the higher with 150 pounds. Mr. J. A. F. Aspinall,in a recent paper on Train Resistance, gives the coefficientof friction of oil lubricated axle boxes at…
Locomotives
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