1221. A spanner for electric lamp shade rings, patent number GB190510608.
1222. A flat file that is missing its eight drawers, it was used in a law office to hold large documents.
1223. Hitching ring, for tying off a horse:
1224. Haven't been able to find any information on this piece of hardware, though I think it's probably a linchpin for connecting two pieces of equipment.
1225. A meat tenderizer:
1226. A "grip head", it's used in the TV and film industry to attach flags and scrims to lighting stands.
Previously seen on this site:
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Last week's set is seen below, click here to view the entire post:
Black Ops Pro Tips
More discussion and comments on these photos can be found at the newsgroup rec.puzzles.