Handbook for machine designers, shop men and draftsmen (1916)
Halsey, Frederick A. (Frederick Arthur), 1856-1935 · New York, McGraw-Hill book company, inc.; [etc., etc.] · leaf 203
ngagement, the angleshould be not less than 10 deg. For wood on metal surfaces theangle should not be less than 20 deg. (C. W. Hunt, Trans., A.S.M.E., Vol. 30). A common angle for the leather and metal surfaces ofautomobile clutches is 12J deg., but such clutches are alwaysheld in engagement by a…
Machine design
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