Abstract: The present invention relates to the simultaneous duplication of both the bit notch pattern and shoulder position of a master key onto a key blank. The key blank is longitudinally and laterally aligned relative to a key cutter. A master key is longitudinally and laterally aligned relative to a key follower. The key follower is then longitudinally and laterally displaced relative to the master key to trace the contour of the key master. The key cutter is simultaneously displaced relative to the key blank in an identical manner to reproduce the traced contour of the master key on the key blank and to longitudinally reposition the key blank shoulder to coincide with the relative longitudinal location of the master key shoulder by cutting away a portion of the shank to reduce the length of the shank.

Abstract: The present invention relates to the simultaneous duplication of both the bit notch pattern and shoulder position of a master key onto a key blank. The key blank is longitudinally and laterally aligned relative to a key cutter. A master key is longitudinally and laterally aligned relative to a key follower. The key follower is then longitudinally and laterally displaced relative to the master key to trace the contour of the key master. The key cutter is simultaneously displaced relative to the key blank in an identical manner to reproduce the traced contour of the master key on the key blank and to longitudinally reposition the key blank shoulder to coincide with the relative longitudinal location of the master key shoulder by cutting away a portion of the shank to reduce the length of the shank.

Abstract: The present invention relates to the simultaneous duplication of both the bit notch pattern and shoulder position of a master key onto a key blank. The key blank is longitudinally and laterally aligned relative to a key cutter. A master key is longitudinally and laterally aligned relative to a key follower. The key follower is then longitudinally and laterally displaced relative to the master key to trace the contour of the key master. The key cutter is simultaneously displaced relative to the key blank in an identical manner to reproduce the traced contour of the master key on the key blank and to longitudinally reposition the key blank shoulder to coincide with the relative longitudinal location of the master key shoulder by cutting away a portion of the shank to reduce the length of the shank.

Abstract: A code selectable key duplicating system is adapted to function with a key cutting machine having a key follower for engaging and tracing the contour of a bit notch pattern formed in the blade of a master key and a key cutter coupled to the key follower to reproduce the traced bit notch pattern of the master key in the blade of a key blank. The code selectable duplicating system includes a bit notch simulator which is divided into a selectable series of n adjacent notch segments to form a surface contour creating a simulated bit notch pattern corresponding to the bit notch pattern designated by a coded sequence. An alignment fixture positions the notch pattern simulator relative to the key follower enabling the key follower to trace the simulated bit notch pattern such that the key cutter reproduces the simulated bit notch pattern in the blade of the key blank.