These are Wire and String Puzzles where the aim usually is to seperate a certain piece from the rest of the puzzle or to move a piece to a certain position.
Left Brainteaser or A Prime [flea market, 1 €, fall 2007 ]
I'm sure there are lots of names for this wooden/rope stump puzzle, the above are those I found for it on the internet. I bought this at a flea market without the ring (it's supposed to be a brass ring) but found a wooden ring for it later on. The aim is to free the ring.
Verrückter Ring (in English: Crazy Ring) by Philos [flea market, 0,30 €, May 2008 ]
Another puzzle where the ring is to be seperated from the stump.
Triple Triangle or Three Triangles [present]
The Wild Triangle
These are a rope puzzles. The triangles have to be freed from the ropes.
Schlaufenpuzzle by Philos [flea market, 1 €, summer 2007]
Devil's Board, in German: Teufelsbrett by Bartl
Cesar's Cubes ,in German: Die Würfel von Cäsar by Bartl
More rope puzzles that can be found under various names. The balls or the outer cubes are to be moved to one side.
Igelkäfig [Prague vacation, september 2003]
I haven't found an English name for this free-the-trapped-object puzzle, the literal translation would be hedgehog cage.
The aim is to free the spiked ball.
Lyons Loop, part of the Tavern Puzzle Collection by Tucker Jones [present, 2003]
It was named after a famous 19th century blacksmith, Patrick Lyon. The object is to remove the ring.
Devil's Loop, Tangleweed or WirrWarr [present, March 2008]
The description is in Czech, the name Devil's Loop is a literal translation by me. Tangleweed by Pentangle looks a little bit different but is essentially the same. I have found the name WirrWarr on the homepage of the Puzzle-Museum.
The aim is to remove the string.
These kind of Hard Wire Puzzles are called Vexieres. Metal wires, which have been intertwined, are to be seperated. My small collection includes:
Offset Triangles
Ring with Triangle
Double Clips
Double Rings with Straight Handles
Double Twists with Curved Handles
Double Rings with Bent Handles
Double Twists with U Handles