Rod – apologies for not answering your query – missed it until today!!
No, no top rake. As I understand the principle, the intention was to make sharpening utterly simple i.e. just grind one flat face. Set it at centre height and it allows both turning and facing without having to adjust anything. Obviously, it does not allow 'sharp' internal forms. Maybe that's the limitation which stopped it being more popular. Apropos a different matter – the Peatol lathe DID have a cross slide … amazing what tidying the workshop will turn up!!!
rgds
Bill