SUCCESSIVE SHOOTING APPARATUS FOR PROJECTILES TO PREDETERMINED POINTS AND PRINTER USING THE APPARATUS

摘要

The invention relates to an apparatus for synchronizing the pointing and firing of projectiles by a projection device. It relates to an apparatus in which a microphone 10 is connected to a line 88 of compressed air which drives a ball 14 held in the yoke 68 of a projection device. When a ball 14 is driven out, the pressure wave is transmitted via line 88 to microphone 100 which creates a signal indicating to a computer controlling the apparatus that a ball has been drawn and that, after a determined delay, the projection device may be pointed to another location / P P Application to ballistic printers. / P