Shame it is broken. Poor design of the support arm, too thin and hole in critical area.
I thought it was a pipe cutter / flanger which was close but no cigar.
I'm assuming something weird and decorative in jewellery making, putting a wavy pattern or curved facets to the radius of the outside of the two rotating chucks on something.
The chucks are too big for rings, but clear designed to hold a ring shaped object so maybe bangles or some sort of outer piece for a medallion or other "neck jewelry" which would then have a stone setting attached inside it.
Also maybe something to do with putting external patterns on trophies or other hollowware but it doesn't seem long enough.
So called because it is used to turn figure-of-eight shaped work, with the centre of each lobe held by a different chuck.
Neil
Can't've been very successful. If it had been (or maybe even if it hadn't ) it would've appeared along with other Acme equipment in Wile E Coyote's instructional videos on roadrunner huntin'…
Looks like it could be adapted as a tool and cutter grinder with a little work.
It's a fascinating industry, bracelet making and bangle faceting. Many interesting videos on YouTube. This one shows a few similar, but more primitive, machines in use toward the end.
some of the machining processes and set ups if you search YouTube for bangle faceting etc are very ingenious and remind me of some of the ornamental turning machines of the 19th century.
Looks like it could be adapted as a tool and cutter grinder with a little work.
It's a fascinating industry, bracelet making and bangle faceting. Many interesting videos on YouTube. This one shows a few similar, but more primitive, machines in use toward the end.
some of the machining processes and set ups if you search YouTube for bangle faceting etc are very ingenious and remind me of some of the ornamental turning machines of the 19th century.