The essentials of gearing; a text book for students and for self-instruction, containing numerous problems and practical formulas . 62. Skew gear defined, 3. Spiral gear defined, 3. Special forms of odontoids, 62. Spherical epicycloid, 45. Spherical hypocycloid, 45. Spur gear defined, 2; illustrated, 10; having action on oneside of pitch point, 10; having action on both sides ofpitch point, 14; conventional representation, 25; inter-changeable with annular gears, 42; notation and formu-las, 67. Theory of cycloidal action, of involute action, of tooth, odont


The essentials of gearing; a text book for students and for self-instruction, containing numerous problems and practical formulas . 62. Skew gear defined, 3. Spiral gear defined, 3. Special forms of odontoids, 62. Spherical epicycloid, 45. Spherical hypocycloid, 45. Spur gear defined, 2; illustrated, 10; having action on oneside of pitch point, 10; having action on both sides ofpitch point, 14; conventional representation, 25; inter-changeable with annular gears, 42; notation and formu-las, 67. Theory of cycloidal action, of involute action, of tooth, odontograph, contact, law of, construct a normal, approximation, 47. Unsymmetrical teeth, of bevel gear table, 53. Velocity ratio constant, 1: not affected by increase of centerdistance in involute, 28. Weisbachs Mechanics, 66. Willis, odontograph of, 60; writings of, 66. Worm gearing defined, 3, 64; notation and formulas for, 69. Worm wheel, 64. Plate I. Cycloid, Epicycloid, Hypocycloid and Involute curves. REFERENCES TO TEXT. Art. 4, Page 4. Art. 8, Page 5. 5, 4. 9, 5. 6, 5. 12, 7. 7, 5. Plate Plate 2 Plate 2. Epitrochoidal curves. Double generation of Epicycloid andHypocycloid. Approximate method. EEFEREXCES TO TEXT. Abt. 10, Page , 6. 34, 22.


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