Scientific American Supplement, No. 664, September 22,1888Various
History
Scientific American Supplement, No. 664, September 22,1888
Various
Science -- Periodicals
I consider it well for young workmen to practice pivot setting in some
old and useless watch any spare time they may have, and thus become
adepts at this work. Unhindered, I am not over on an average of
one-half hour in setting any ordinary pivot, especially if I do not
have to cement my work. If this is a balance pivot, be very careful to
see that your balance is true and poised before putting on hairspring
and roller. There are some pivots that are underturned (to make look
tidy and light), and sometimes it is about an impossibility to put in
a new one, and in this case, if an American watch, I always put in an
entire new staff, and hence keep a full assortment on hand.
Regarding replacing broken jewels, I also keep a full stock of these,
turned (the setting) to match any make or style of watch; except, of
course, Swiss watches, and for these I keep a large assortment of
sizes, both of cock and foot and wheel jewels, and a full stock once
procured, they last a long time and are a good investment, for with
them you can meet any emergency.
In a Swiss watch, or any watch where the jewel is set into the plate,
have some one of the devices for throwing up the burnished lip, and
then select a jewel that just fills the space, and then with a smooth
pointed punch, such as I described I used for closing up a pivot hole,
I turn this lip back by sliding this round pointed punch around the
outside, making it act as a burnish. Cap jewels I either treat in the
same manner as the last, or cut away the setting, and insert them as
they are inserted in most Swiss watches.
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