Glasgow Cable Car No 1 trailer (welding trolley)

I was going to post an update on Cardiff 131 today but then Mike Crabtree reminded me that the welding trolley is of historical interest having horse car running gear, namely brake hangers, beams, pull rods and sway beam arrangement. The underframe looks as though it is bespoke and not of horse car origin also the wheels are of electric car proportions and the axleboxes are definitely a one off.
1. The welding trolley is in the workshop at present.
2-3. These pictures of the underframe were taken by Mike Crabtree.