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)
r X of the cutter-head. To find the length of the cutter (kX^ki necessary toproduce a glvcin de[)th of moulding, we may draw a PL O TIING MECHANICAL MO flONS. 259 circle/, Figure 292, equal in diameter to the size Ofthe cutter head to be used, and line A A. Thehighest point of cutting edge being at… … Fig. 291. Now the necessary depth of cutter edge being foundfor any given moulding, or part of a moulding, thecurves for the edge maybe found as follows: Sup-pose the moulding Is to be half round, as In the endview in Figure 290. The width of the cutter mustof course equal the width of the…
Mechanical drawing
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