Basic concept is, the inner box with all the holes/mesh fits inside the outer box. This inner box has the inch clear tube for hoovering the bees, bees are contained within the inner box.
Outer box has vaccum plugged in, and creates vacuum by drawing air through the holes/mesh in the inner box and through the clear tube.
Outer box has adjustable slider to regulate vacuum pressure so bees are still alive after being hoovered.
If bees become too much in inner box, there is a sliding floor on the bottom of inner box to allow easy decanting of bees into another container.
I have seen other designs where hives are used, but i felt i needed a more compact unit to get into lofts and other awkward places etc
This is as yet untried as i only got my special plastic tube today, plus nothing is swarming or doing much here at the moment cause of the crappy weather, but i will post results as and when....
I would redesign (tidy up) the bottom sliding tray on the inner box.
Observation can be accessed by sliding the inner box out and looking through the vents, you could pop some perspex on the top of both boxes i suppose, but this realy has been designed to bump and bang through loft hatches etc.
It is a prototype as such, so if i were to build another i would just basicly tidy it up!