This section is from the book "The Adventurous Life Of A Versatile Artist: Houdini", by Harry Houdini. Also available from Amazon: The Adventurous Life of a Versatile Artist; Houdini.
As an additional element to this controversy, in 1855, Lin-nius Yale, Jr., discovered how to pick the then celebrated Day and Newell Parautoptic Bank Lock.
It was of American origin, and was known in England as Hobbs Lock, but was the invention of a Mr. Pyle.
Yale also discovered that he could pick the best Bank Lock -the Double Treasury, which he himself had designed.
And eventually demonstrated that any lock having a key hole could be opened by any expert with the necessary skill and time at his disposal.
Accordingly Mr. Yale proceeded to develop the combination or Dial Lock.