Take-off in a craft with rockets allows a gentle acceleration that doesn't kill the occupants.
Given that the Moon has no atmosphere: Is there any current technology that would allow safe takeoff without using rocket propulsion? A giant spring for example?
You can assume that technology is today's (to avoid FTL, wormholes etc.) but that the moon has all the necessary resources to construct a device that isn't a rocket.
For the purposes of this question I define a rocket to be any device that expels matter in order to make use of reaction. I define 'safe' as meaning that neither the crew nor their craft are physically damaged and are able to reach escape velocity in a good state of health.