trammel

1750 - 1825

Trammel - adjustable hanger - for supporting an open iron lamp. First piece is a long flat iron strip with simple hook at top and rat-tail loop at bottom; from which a thin oval link is suspended. This link catches on any of the bottoms of 8 saw-tooth ratchets on a second flat piece. A flat loop riveted to the top of the second piece wraps around the first piece, allowing the second piece to move up and down on the first, the wire loop catching below one of the teeth at the required position. A hook with rat-tail terminal at bottom of second piece suspends the lamp.