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)
pitch; and where line i on the circle intersectsline I on the pitch is one point in the curve. Sim-ilarly, where point 2 on the circle intersects line 2 onthe pitch is another point in the curve, and so on forthe whole 24 divisions on the circle and on the pitch.In this view, however, the path of… … portion of the spiral or thread is hidden, namely from I go MECHANICAL DRAWING SELF-TAUGHT, lines I to 13 Inclusive, being an equal proportion tothat hidden in the left-hand view. The top of the cylinder Is shown In the left-handview to be cut off at an angle to the axis, and willtherefore appear…
Mechanical drawing
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