Inside Out Library
Mechanical movements, powers, devices and appliances (1901)
Hiscox, Gardner Dexter, 1822?-1908 · New York, N. W. Henley & company · leaf 347
■ POWELLS I*—pHTHREAD … 1402. SCREW THREADS, squarethread. Angle square. Depth equals -j-half pitch. Width between threads equal-f half pitch, for clearance. 1403. SCREW THREADS, Powellsthread. Depth of thread equals + halfpitch. Width of top of thread, 0.37-ofpitch. Width of bottom, 0.37 -\- of pitch.Angle of side, 11^…Mechanical movements
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