It does look as if made from salvaged parts, but perhaps that was genuinely all its builder could do to give himself at least something to make flat bits on.
The cross-slide looks as if from a Drummond manual shaper (I have one), where it is on the knee this machine lacks.The Drummond’s ram slides are fixed, machined in the body itself. Some shapers were made in that configuration, the ram rather than table moving across, though.
The ram is from some other machine; the clapper-box and its slides possibly from others again That does not greatly matter as long as it works.
The vice is as Martin suggests, probably intended for drilling; and perhaps not intrinsically as “rubbishy” as he alleges but not really robust enough for use on a shaper. You can’t really have the fixed jaw on the inside, but this does mean the vice needs be very strong. I use my Drummond shaper with its own vice set along the carriage, not across it, so the thrust is not against the screw.
The main handle does not look ex-shaper – it would be very awkward to use with such a long reach at the back of the stroke. It is normally straight, at right-angles to the ram in mid-stroke. You could modify that one by cutting and welding.
The down-feed handle looks ex-valve.
Having no self-acting cross-feed is a major disadvantage. It would not be too difficult to make one though. The principle is that of an ordinary spur-gear engaged on the return-stroke by the wedge-shaped end of a sprung, cylindrical pawl. This can be rotated to give feed in either direction with a central, neutral (disengaged) position; and its carrier is linked to the ram to give it its rocking motion.
You could improve it by raising-blocks to give more vertical height, etc. but you need consider whether it is worth the money and extra work involved.