Down Arrow: b
Scott's Spindle

In the above patent drawing, "b" is the actual spindle.

Scott's Spindle - A type of fastening actuator for a break-open gun consisting of a vertical shaft, rotated by a lever on the top of an action body, operating a cam fixed to its bottom, which when rotated, withdraws (typically) a Purdey bolt which unlocks the barrels allowing the gun to open. Patented by William M Scott in 1865 and in widespread use to this day.


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