PIVOTING
Reading edition
CONTAINING COMPLETE DIRECTIONS FOR MAKING AND FITTING NEW STAFFS FROM THE RAW MATERIAL
EUGENE E. HALL
WITH NUMEROUS ILLUSTRATIONS
CHICAGO: Hazlitt & Walker, Publishers 1910
CONTENTS.
CHAPTER I.
The raw material. The gravers. The roughing out. The hardening
and tempering5
CHAPTER II.
Kinds of pivots. Their shape. Capillarity. The requirements of
a good pivot13
CHAPTER III.
The proper measurements and how obtained19
CHAPTER IV.
The gauging of holes. The side shake. The position of the graver 23
CHAPTER V.
The grinding and polishing. The reversal of the work. The wax
chuck29
CHAPTER VI.
Another wax chuck. The centering of the work35
CHAPTER VII.
The finishing of the staff. Pivoting. Making pivot drills. Hardening
drills. The drilling and fitting of new pivots39