ringframe
nounUK /ˈrɪŋfreɪm/
US /ˈrɪŋfreɪm/
A ringframe is a strong round frame that holds something in place.
The engineer checked the ringframe around the spinning wheel.
OTHER MEANINGS
2. A circular structural frame used in textile spinning machines to hold spindles.
The ringframe in the mill held dozens of spindles at once.
3. A round metal frame used to support or reinforce a part.
They bolted the ringframe to the base of the machine.
4. A circular frame in a camera or lens assembly that holds the glass.
He unscrewed the ringframe to clean the lens.