A handbook on the teeth of gears, their curves, properties, and practical construction (1887)
Grant, George B. (George Barnard), 1849-1917 · [Boston] · leaf 42
they can THE NORMAL THEORY OP THE GEAR TOOTH CURVE. be made to form teeth on a blank disk fast- gate and others are not, the property is evi-ened to the other wheel B, which are the dently due to some peculiarity of their shape. bounding curves, ordifferent positions. Fig.3 envelopes of all their… … Enveloping teeth These enveloping teeth can be formed byscribing lines about the originating teeth atshort intervals of their motion, and then cut-ting out all the lines ; or, if they are cuttingtools, which reciprocate vertically, see Fig.13, they will cut them out as the frictionwheels roll…
Gearing
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