The set. The rings are only necessary if you have a 3A Box camera. One of the 4 adapters goes into the wind knob, easily visible.
Supply and wind spool mounted
supply side,
Wind side.
Film inserted. As you can see, it's not as flat as it should be. So I will mount plastic gates on both sides to support the film later.
The ruby window is outside the backing paper. So you have to count turns. And you should obstuct the ruby window to avoid fogging the film,
How to proceed (with help from camerahack's website):
Load the take-up spool with two adapters mounted at both ends and make sure that the wind key adaper goes into the camera’s film advance knob.
Mount the other two adapters on the film supply spool and put it into the camera.
Insert the paper leader into the take-up spool and wind a little until it’s well engageded.
With the camera still open, start winding the film until you just see the big vertical arrow, then close your camera back.
Turn the film advance knob 10 times (or 20 half turns) for the first photo.
After the first photo is taken, advance the film by 4 turns (or 8 half turns) for photo no. 2. Do the same for photo 3 and 4 which is the last one.
After the 4th photo wind until the end of the film, do at least 8 full turns. Take out the spool to process. Good luck!