Coronet Major - Mystery pieces?

[skpi]

Hi,

I’m hoping someone can shed some light on the following pieces that came with my Coronet Major.

I’m not sure could the pulley be for a band saw attachment that I don’t have?

Thanks

 

[Robbo3]

Peruse the attached leaflet.
From memory, the first pic looks like a mortice cutter holder. The 2nd, 3rd & 4th a screw chuck.
5 & 6, don't know.