Mechanical drawing : a manual for teachers and students (1902)
Cross, Anson Kent · Boston : Ginn & Co. · leaf 186
between the turns of the thread A. One turn ofthe bolt moves it the distance of the pitch A A; the threads A^ B, and Cgive three times the strength that wouldbe given by thread A. To drawthis bolt, divide the pitch into as many equal parts as there are threads, andplace one thread in each space, as… … lyS MECHANICAL DRAWING. PLATE. XXVII. Fig. 134. Three views of a sqiiare bolt-head. Fig. 135. Three views of a square bolt-head^ whose corners have beettchamfered {bevelled). The surface of the chamfer is really that of a cone, which is shown bythe dotted lines. This cone will be intersected by…
Mechanical drawing
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