Maxime Desmarais writes:
I found this Vesterbox 60 [on a Japanese auction site here) and remembered your post about a mysterious 127 adapter. This is it.
The adapter is inserted inside to loading chamber and narrows it to accept 127 rolls. Ginrei also made a narrower guide and an adjustable reel to accept the film.
So, these manufacturers did take up the idea explained in the Patent History Page while Agfa did not:
The final patent (British Patent 705931, Daylight Developing Tank for Photographic Roll Films) granted to Kehr, Lesjak and Strauss on 24 March 1954 provided the basis for film widths other than 120 and 35 mm within a single tank. They describe several methods by which the spiral discs could be moved inwards for, say 127 film, as in a conventional universal tank, while keeping the film guide, clip and strap of the Rondinax tanks central.
Had these tanks been sold in the west as a Rondinax 60/27, surely Agfa would have benefitted because 127 size film became very popular for colour ‘super-slides’ and those of us with ‘baby’ Rolleiflex 4 x 4s or Yashica 4 x 4s would have been able to process films in daylight. If only.
Great bit of work from Maxime!