Well, I'm in a bit of a pickle. We purchased a second hand cot which is probably about five years old. The slat names the company who made it as "Pambrook" (?), not sure as the writing isn't very clear. I don't think the company exists anymore either. Anyways, when we got it home to assemble it, we couldn't get it right. The side rail won't come up because we are unsure of exactly how it is done, it looked great and easy enough to do before we took it apart to bring it home. I have gone to shops to see how we can keep the side up but the ones out now are rather different and I am unable to find anything which locks the side in a similar way to ours. It's hard to describe but I'll try. There are two metal rods which attach to each side of the cot, with the rods going through holes in the sides of the of the rail at the same time. Attached to the sides of the cot are two metal hoops- I have tried putting the rods through the hoops- this didn't keep the side up. I have also tried leaving the hoops without the rods going through them- this didn't work either.
I'm sorry if none of that made sense and I look like a crazy lunatic but it's the best I could do. If anyone is able to help (which I doubt) I would be truly grateful. Thanks.