Mechanical drawing. Elementary and advanced (1910)
Reid, John S. (John Simpson), 1856- · New York, J. Wiley & sons; [etc, etc.] · leaf 253
essed in inches. Furtherback, beyond the perfect threads, come two having the sametaper at the bottom, but imperfect at the top. The remain-ing imperfect portion of the screw-thread, furthest back fromthe extremity of the tube, is not essential in any way to thissystem of joint; and its… … L ^ THffEADS _Ji_2THflrAPS± Comblftf Thbitao V^^/MP£RrECT ^FUUA.TRO<$ LOHPLCTC IHBCAO U 4p *L—ip —X T — Fig. 321. Construction.—Draw two lines parallel to each other ata distance apart equal to the thickness of metal as given inthe table; then draw the vertical line 2 to represent the endof the…
