The length of the horn _k_ is determined by the graphic plan
and can be taken from the plotted plan. The end, however, should
approach as near to the discharging jewel as possible and not absolutely
touch. The discharging (gold) spring _m_ is attached to the blade _i_ of
the detent with a small screw _l_ cut in a No. 18 hole of a Swiss plate.
While there should be a slight increase in thickness in the detent blade
at _w_, where the gold spring is attached, still it should be no more
than to separate the gold spring _m_ from the detent blade _i_.
IMPORTANT CONSIDERATIONS.
It is important the spring should be absolutely free and not touch the
detent except at its point of attachment at _w_ and to rest against the
end of the horn _k_, and the extreme end of _k_, where the gold spring
rests, should only be what we may term a dull or thick edge. The end of
the horn _k_ (shown at _y_) is best made, for convenience of elegant
construction, square--that is, the part _y_ turns at right angles to
_k_ and is made thicker than _k_ and at the same time deeper; or, to
make a comparison to a clumsy article, _y_ is like the head of a nail,
which is all on one side.
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