An ancient bow drill is device that looks like a bow with a string. A piece of wood with a point is spun at high speed using the bow and string to drill a hole, usually in wood.

It is a rod called the Kelly or Grief Stem.

Weight of drill string while going in the well

you can drill holes for the string in just about anything (ive used wooden furniture casters)for the top or just wood. and beads or anything you like that you can string on it. use bamboo rods or aluminum or copper pipes(need pipe cutter and drill) for the chimes.

The term "tripping the well" got it's start most likely as a reference to the "round trip" made by the drill bit. The first leg of the trip is coming out of the hole, by lifting the entire drill string and unscrewing the upper most drill pipe called a joint, the newly removed drill pipe is laid beside the rig and the drill string is lifted again, etc. until all drill pipe is out of the hole. After service work is performed, for example change to fresh drill bit, then the second leg of the trip is to reverse the process, lowering the drill string as each new joint is made until fully back in the hole with the bit on bottom. You can find a lot of interesting videos on offshore rigs, jobs, etc here:

I left the previous answer in place:

When drill pipe is lowered or put into the well in the well, it is called running in or is tripping into the well. When drill pipe is raised or pull out of the well, it is call running out or tripping out of the well.