[Illustration: Fig. VIII.]
Fig. VIII. represents the batten motion to be attached to the
guiding-rod, [see No. 14, in Fig. I.], and the frame, [see No. 16, in
Fig. I.] The batten, 2, is connected to a triangular lever by means
of lever, _d_. Another vertical lever connects the lower part of this
triangular lever to a projecting bolt, _k_, fixed to the guiding-rod of
the griffe. By raising the guiding-rod, thus raising lever, _k_, in the
direction of the arrow, the batten is thrown outwards, [see direction
of arrow below _c_], returning again to its former position at the
lowering of the griffe. _f_ indicates the place where the triangular
lever is fastened (movable) to the projecting bolt, extending out of
the frame. _a_ indicates the place for the cylinder. Part 1 of the
batten is movable at _l_ in the direction of arrow, _s_, allowing the
cylinder to be inserted. Part 1 is fastened (after putting the cylinder
in at _a_), to 2 by means of the screw, _n_.