Mechanical drawing self-taught: comprising instructions in the selection and preparation of drawing instruments, elementary instruction in practical mechanical drawing together with examples in simple geometry and elementary mechanism, including screw threads, gear wheels, mechanical motions, engines and boilers (1883)
h of the front flat of the head, as wellas the diameter of the stem. F>om the point wherethese arcs meet line 2, and with the same radius, arcs5 and 6 are marked, showing the widths of the other 11^ MECHANICAL DRAWING SELF-TAUGHT. two flats of the head. The thickness of the head andthe length of… … Fig. 153-point A. In the United States standard for bolt headsand nuts the thickness of the head is made equal tothe diamoter of the bolt. With the compasses set forthe arcs 3 and 4, we may in two steps, from A alongthe centre line, m.nk off the thickness of the head EXAMPLES IN BOLTS, NUTS, AND…
Mechanical drawing
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