Name of a particular paper folder or binder?

I vaguely remember something like that. They were very fiddly to reassemble as I recall. The boards/covers were in two pieces, one was narrow (may be 1cm ) and the rest a little under A4 (or may be foolscap in those days!). The holes for the binding part were in the narrow bit and the two parts were held together by a cover made of a cloth like material to form a hinge.

There was another, simpler, system, which used a spring link thing which went through the holes in the paper and covers (just normal round holes) and then there was a metal part which the ends tucked under.

From memory, they were used in part of a Company worked in as a Vac student in the mid/late 70s. Possibly another part of the same (overall) Company I joined on graduating in '79.

As for the name/make- no idea, they were just a stock item in the stationary cupboard and you asked the Stationary Overlord for one, pledged the blood of your first born etc ...at least unless they needed a radio fixing ;-)

Certainly looks similar. The paper, though, had two cut outs down one long edge, each T shaped like this :

! ! ! ___ ! ! ! ----! ! ! < paper formed around strap ----! ! ! ! ! ! --- !

I have six crank keys here, four brass and two plated. I'm sure the plated ones were for the binder.

Try a junk shop.

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