We will name this point the point _x_.
It may not be amiss to say the arc _i_ is swept from the center _g_
through the point _u_, said point being located ten degrees from the
intersection of the radial _a c_ with the peripheral line _a_. It will
be noticed that the inner angle of the entrance pallet _A_ seems to
extend inward, beyond the radial line _a j_, that is, toward the pallet
center _g_, and gives the appearance of being much thicker than the exit
pallet _A'_; but we will see on examination that the extreme angle _x_
of the entrance pallet must move on the arc _i_ and, consequently, cross
the peripheral line _a_ at the point _u_. If we measure the impulse
faces of the two pallets _A A'_, we will find them nearly alike in
linear extent.
Mr. Grossmann, in delineating his exit pallet, brings the extreme angle
(shown at _4_) down to the periphery of the escape, as shown in the
drawing, where it extends beyond the intersection of the line _g f_ with
the radial line _a 3_.
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