Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 115
103 FORMS OF TEETH FOR GEAR WHEELS. Fig. 7. 1st. epicycloidal teeth with radial … shown that the difference of the diame- is the most convenient for practical exe- ters of C and B is equal to the diameter cution of any good form known, and for of A.* this reason is the form usually adopted, Fig. 8 indicates how this double gen- when correct delineation is attempted. eration…
Engineering
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