The rod can be slowly turned by hand to adjust the workpiece position, to allow the gear teeth to be cut to an appropriate depth. The method of action is simple. As the tap turns it not only cuts ...

The rod can be slowly turned by hand to adjust the workpiece position, to allow the gear teeth to be cut to an appropriate depth. The method of action is simple. As the tap turns it not only cuts ...

THESE DIMENSIONS MAKE NO ALLOWANCE FOR BACKLASH. TO INTRODUCE THE NECESSARY BACKLASH, THE MATING GEAR SHOULD BE CUT ENOUGH DEEPER TO SECURE IT, WHILE THE PINIONS SHOULD BE CUT AS SPECIFIED IN THE ...

GENERALLY THE CONTACT RATIO WITH 14 SPIRAL GEARS WILL BE GREATER THAN TWO(PROVIDED NO UNDERCUT EXISTS,) WHILE WITH THE OTHER FORMS IT IS ALMOST ALWAYS LESS THAN TWO. WITH TWO TEETH ALWAYS IN CONTACT, ...