The two rockets on the left are needle type cork ejectors. The patent drawing shows the ejector on the left. A lever is pressed against the side of the rocket nose to engage the CO2 cartridge and eject the cork. In the second example, the top of the nose cone is pushed down. The base is used to strip the cork from the needle after ejection.
The ejector in the foreground is called the Kork-Ex.
©2000 Donald A. Bull