Note that when the bolt is retracted all of the levers are vertically positioned but in the locked position some are slanted. Theoretically all the levers could be vertical in the locked position or all slanted. If vertical they would all have to be aligned with the bolt mounted stump shown lower left in the close up. Or if all were slanted when locked they would all have to align their central gating to a fixed case mounted stump to be unlocked. In the first case they would slide directly up and down. But in the second case, the slanted levers are also moved up by the key to be aligned with the fixed stump and bolt mounted stump moves the levers back into the vertical position as it is unlocked. Two stumps, one movable as is typical in lever locks and one that is fixed. Ponder on that a while and I will try to explain further. Doug
———- Post added at 11:51 PM ———- Previous post was at 11:16 PM ———-
If you check p. 68-69 of “American Genius” you will find a slightly more complex version of this Jones lock. But this lock only has one feature of Jones’ 1845 improvements made to the original Wm. Hall 1843 and that is the barrel/curtain. It also shows signs of fairly heavy use and some damage to the lever/sliders. I made the key several years ago for a collector and it was quite a challenge. Only after I made the key did I realize that some of the levers were missing their central gating. I did repair a couple but unfortunately failed to take pics. The wear in the lock (and original key?) is what led to them breaking. Doug