The principles of pattern making, written specially for apprentices and students in technical schools (1900)
Horner, Joseph Gregory, 1847-1927 · London, New York, Pitman · leaf 95
these before theboxes and boards, taking for example, spur, and bevelwheels, worm wheels, and screw wheels. In Fig. 63, representing a spur wheel block, A Bare the teeth, a represents the thickness or breadth 79 80 PRINCIPLES OF PATTERN MAKING. of face of the wheel, the space d inclosed by A andB…
Patternmaking
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