Mechanical drawing. Elementary and advanced (1910)
Reid, John S. (John Simpson), 1856- · New York, J. Wiley & sons; [etc, etc.] · leaf 247
from the left-hand border-line. Then find the pitch p by the formula (3), and fromwhere the two lines you have just drawn intersect mark offwith the scale on the horizontal line 6 points a distanceapart equal to the pitch as found by the formula. Throughthese points with the 300 triangle draw the… … Fig. 317.forms of threads that were in use before the Sellers thread ELEMENTARY MACHINE DETAILS. 233 was adopted as the U. S. standard, and is still used, althoughcondemned by all progressive engineers. This thread is the■same as the Sellers thread except that the sides are made tomeet at a sharp…
