free ebooks
A Treatise on Staff Making and Pivoting by Hall

Transcriber's notes: Some minor typographical errors have been corrected. The author's spelling has been retained.

A TREATISE

ON

STAFF MAKING

AND

PIVOTING

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 tempering 5

CHAPTER II.

Kinds of pivots. Their shape. Capillarity. The requirements of a good pivot 13

CHAPTER III.

The proper measurements and how obtained 19

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 chuck 29

CHAPTER VI.

Another wax chuck. The centering of the work 35

CHAPTER VII.

The finishing of the staff. Pivoting. Making pivot drills. Hardening drills. The drilling and fitting of new pivots 39

STAFF MAKING AND PIVOTING.

CHAPTER I.

To produce a good balance staff requires more skill than to produce any other turned portion of a watch, and your success will depend not alone on your knowledge of its proper shape and measurements, nor the tools at your command, but rather upon your skill with the graver and your success in hardening and tempering. There are many points worthy of consideration in the making of a balance staff that are too often neglected. I have seen staffs that were models as regards execution and finish, that were nearly worthless from a practical standpoint, simply because the maker had devoted all his time and energy to the execution of a beautiful piece of lathe work, and had given no thought or study to the form and size of the pivots. On the other hand, one often sees staffs whose pivots are faultless in shape, but the execution and finish so bungling as to offset all the good qualities as regards shape. To have good tools and the right ideas is one thing, and to use these tools properly and make a practical demonstration of your theory is another.


eBook Search
Social Sharing
Share Button
About us

freefictionbooks.org is a collection of free ebooks that can be read online. Ebooks are split into pages for easier reading and better bookmarking.

We have more than 35,000 free books in our collection and are adding new books daily.

We invite you to link to us, so as many people as possible can enjoy this wonderful free website.

© 2010-2013 freefictionbooks.org - All Rights Reserved.

Terms of Use | Privacy Policy | Contact Us