While leafing through a copy of "Engineering" for September 28th, 1866, I came across this desription of a most unusual lock, utilising flexible "needles"attached to the bolt, which can be manipulated directly by the key to pass through holes in a fence.(They can be flexed laterally by the key as well) The company was called "Patent Unpickable Lock Co Ltd, 237 & 239, Euston Rd., London", and they advertised extensively in that year, stating that a large range of options were available. A view of the inside is shown on page 225, and can be viewed by looking up Grace's Guide, where scans of the magazine are available. (I'm afraid that I was unable to copy just the image) The firm was wound up a few years aftrwards.

I have failed so far to locate the inventor/s or patents-any ideas?
It is so unusual that I am sure that someone knows more!