Cover of A Treatise On Staff Making And Pivoting

A Treatise On Staff Making And Pivoting

Auhtor: Eugene Hall

Language: english

Genres:

classic
Downloads: 89
eBook size: 302Kb

Review by Timothy B. Riley, February 2006


Rating: (****)
Copyright: Public Domain in the U.S.
Please check the copyright status in your country.

Summary of the Book 'A Treatise On Staff Making And Pivoting':

A Treatise On Staff Making And Pivoting Illustrated Edition Dodo Press by Eugene E Hall. Early twentieth century work on the staff making and pivoting aspects of watch making.

Excerpts from the Book 'A Treatise On Staff Making And Pivoting':


... with the balance staff, from the steel to the jewels, and their relation to the pivots, and I believe this will then convey to the reader all the necessary ...
... lathe of some kind, or a foreign-made lathe manufactured on American lines. It is advisable, though not absolutely necessary, to have three ...
... the pivots. At this degree of hardness steel will assume an exquisite polish if properly treated. Another method of tempering is to place the staff ...
... be so made. We will suppose that the workman has a moderately true chuck, and that he prefers to turn and finish all the lower portions in this ...
... jewel on the side towards the end stone is convex. It is so made that through capillarity the oil is retained at the end of the pivot where it is most ...
... level. An ascent of a liquid, due to capillarity, also takes place, where the liquid is placed between two separate bodies, as oil placed between two ...
... should be, we are the better able to perform that portion of the work in an intelligent manner. A Treatise on Staff Making and ...
... are so skilled as to use the graver with equal facility with either hand, and it is therefore an advantage to start with the upper end, as you can thus ...
... is the proper side shake for a pivot measuring 12/2500 of an inch in diameter, it is certainly not sufficient for a pivot which is one-third larger. ...
... Fig. 4. Now let us examine into the best positions for holding the gravers. In Fig. 13 two ways of holding the graver are shown, A representing the ...
... the seat for the balance, as indicated at A, Fig. 15, the graver A, Fig. 1, or a similar one as shown at B, Fig. 15, should be used. The slope ...
... fitted into a bottle, while in Fig. 19 the hub is reversed, just as a cork would appear were the larger portion within the bottle and the smaller portion ...
... take the distance between the outer surfaces of the hole jewels and shorten the staff to the required length. Do not remove too much, but leave the ...
... graver proceed to cut a nice V-shaped center with an angle of about 60^0. When you have proceeded thus far you will find that you have an implement ...
... and below the hub, according as one end or the other is inserted. You are now ready to insert your staff and proceed with your work. Hold ...
... size for the pivot can be determined from its jewel, as previously described. Finish the ends of the pivots flat and round the corners off slightly ...
... J. L. Finn, in a little volume entitled Poising the Balance,[A] and I would advise all watchmakers, both young and old, to read what he has to say. ...
... unnecessary. There are very few cases in which it is necessary to reduce the temper of the staff, and even then it should only be reduced as far ...
... finishing. If the taper is a gradual one and the pivot a good close fit, there will be little danger of it loosening while dressing to shape. If ...
... HALL WITH NUMEROUS ILLUSTRATIONS CHICAGO: HAZLITT &WALKER, PUBLISHERS ...