Mechanical movements, powers, devices and appliances (1901)
Hiscox, Gardner Dexter, 1822?-1908 · New York, N. W. Henley & company · leaf 346
1399. SCREW THREADS.—UnitedStates Standard Thread. Flat top andbottom. Depth equals 0.65 of the pitch.Angle 60°. 1400. SCREW THREADS, Whit-worth thread. Rounded top and bot-tom. Depth equals 0.75 of the pitch.Angle 55°. TRAPEZOIDAL ^-p*THREAD I I … 1401. SCREW THREADS, Trape-zoidal thread. Angle 90° face, 450 back.Depth equals 0.75 of the pitch. 33S MILL AND FACTORY APPLIANCES.
Mechanical movements
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