Mechanical drawing. Elementary and advanced (1910)
Reid, John S. (John Simpson), 1856- · New York, J. Wiley & sons; [etc, etc.] · leaf 251
Fig. 319. thread equal to ■§• of the total depth of the thread, as shownin Fig. 320. This form of thread can be used only when thepressure is on that side of the thread which is at right anglesto the axis of the screw. … Fig. 320. Exercise 3.—Draw the sectional outline of the square,knuckle, and buttress threads shown in Figs. 319 and 320.Pitch 1. Scale twice full size. Pipe-threads Previous to the year 1862 no common system had been agreed upon for the form or proportionsof pipe-threads. Since that time, owing to…
