The 'Rice' barrel-band is not made anymore. I believe the (Elyria, Ohio) company 'disappeared' during the early 1960's.

The attached description explains the installation.

Tightening the 'slotted-nut' would have drawn the band into its barrel channel inletting, preventing the band opening-up.

I don't have one of these barrel-bands and have just seen them in photographs.

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