The superfluous steel is cut away with a sharp
and rather thin cold chisel.
[Illustration: Fig. 42]
The chisel is presented as shown at _G_, Fig. 43 (which is an end view
of the vise jaws _H H_ and regulator bar), and held to cut obliquely and
with a sort of shearing action, as illustrated in Fig. 42, where _A''_
represents the soft steel and _G_ the cold chisel. We might add that
Fig. 42 is a view of Fig. 43 seen in the direction of the arrow _f_. It
is well to cut in from the edge _b_ on the line _d_, Fig. 41, with a
saw, in order to readily break out the surplus steel and not bend the
regulator bar. By setting the pieces of steel obliquely in the vise, or
so the line _e_ comes even with the vise jaws, we can cut to more nearly
conform to the circular loop _A''_ of the regulator _A_.
[Illustration: Fig. 43]
The smooth steel surface of the bent mainspring _c_ prevents the vise
jaws from marking the soft steel of the regulator bar. A person who has
not tried this method of cutting out soft steel would not believe with
what facility pieces can be shaped.
Pages:
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95