  We present a comprehensive study of the ionization structure and kinematics
of the planetary nebula (PN) NGC40 (a.k.a. the Bow-tie Nebula). A set of
narrow-band images obtained with the ALhambra Faint Object Spectrograph and
Camera (ALFOSC) at the Nordic Optical Telescope (NOT) are used to study the
turbulent distribution of gas in the main cavity, the ionization stratification
and the density of this PN. High-resolution Manchester Echelle Spectrograph
(MES) observations obtained at 2.1m telescope of the San Pedro M\'{a}rtir (SPM)
Observatory are used to unveil in great detail the kinematic signatures of all
morphological features in NGC40. The images and spectra suggest that NGC40 had
multiple mass ejections in its recent formation history. We found 4 jet-like
ejections not aligned with the main axis of NGC40 (PA=20$^{\circ}$), some of
them having pierced the main cavity along the SW-NE direction as well as the
southern lobe. Using a tailor-made morpho-kinematic model of NGC40 produced
with SHAPE we found that the main cavity has a kinematic age of 6,500 yr and
the two pairs of lobes expanding towards the N and S directions have an
averaged age of 4,100$\pm$550 yr. NGC40 thus adds to the group of PNe with
multiple ejections along different axes that challenge the models of PN
formation.
