Turning and Boring A specialized treatise for machinists, students in the industrial and engineering schools, and apprentices, on turning and boring methods, including modern practice with engine lathes, turret lathes, vertical and horizontal boring machines

CHAPTER IV

Chapter 4105 wordsPublic domain

THREAD CUTTING IN THE LATHE

Selecting the Change Gears for Thread Cutting--The Thread Tool--Cutting the Thread--Indicator or Chasing Dial for Catching Threads--Principle of the Thread Indicator--Replacing Sharpened Thread Tool--Use of Compound Rest for Thread Cutting--Threads Commonly Used--Multiple Threads--Cutting a U. S. Standard Thread--Cutting a Left-hand Thread--Cutting a Square Thread--Cutting Multiple Threads--Setting Tool When Cutting Multiple Threads--Taper Threading--Internal Threading--Stop for Thread Tools--The Acme Standard Thread--The Whitworth Thread--Worm Threads--Coarse Threading Attachment--Testing the Size of a Thread--The Thread Micrometer--Three-wire System of Measuring Threads--Rivett-Dock Threading Tool--Cutting Screws to Compensate for Shrinkage--Calculating Change Gears for Thread Cutting--Lathes with Compound Gearing--Fractional Threads--Change Gears for Metric Pitches--Quick Change-gear Type of Lathe 135-177