Assembly Of Signature Feature Inside The Cylinder; How Does The Signature Feature Work - Assa Abloy Sargent Signature Series Information And Field Service Manual

Signature Series
®

Assembly of Signature Feature Inside the Cylinder

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The Signature feature operates independent of your cylinder's master key system.
The Signature feature provides two locking points within the cylinder in addition to the
locking created by the master key system.
Each of the holes drilled into the cylinder barrel for the Signature feature
contains a side pin or keyway blocking pin and a side pin/keyway
or blocking pin spring. Each hole containing these Signature feature
pins and springs sealed at the factory with a plug. This plug is
never to be removed. Lubrication is applied at the time the
Signature pins and springs are sealed in the barrel.
The Signature feature pins are not to be serviced in the field.
Tampering with the side pins, side pin springs or plugs may cause
the Signature feature to fail and render your cylinder inoperable.
As a final step, two blocking bar springs and a blocking bar are inserted into channels
on the bottom of the cylinder barrel. These bars have an offset and the orientation of the
offsets within the cylinder barrel is determined by the depth of the dimples on the keys.
Information on orienting the bars and placing them in the cylinder barrel is given in the
section "Field Servicing the Signature Feature".

How Does the Signature Feature Work

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The two blocking bars on the bottom of the cylinder barrel are pressed by the blocking bar springs into the
grooves on the bottom of the barrel chamber in the cylinder housing. The side pins, which are above the
blocking bars, keep the blocking bars from rising out of the grooves. This action along with the master keying
pins in the top of the cylinder, keep the cylinder barrel from turning and the cylinder from operating.
There are six dimples in each key, three on each side. There are six side pins in each cylinder barrel, one
for each dimple in the key. When the dimples and side pins are correctly aligned and the sizes of the pins
correspond to the depths of the dimple cuts, the offsets in the blocking bars are aligned with grooves on the
side pins, which is necessary for cylinder operation.
The following describes the interaction of the key and the cylinders:
When the correct Signature key (correct code pattern of dimples and master keying cuts) is inserted into the
Signature cylinder:
• Side pins are pressed by the side pin springs into the dimples on the key
• Offsets in the blocking bars are then aligned with the grooves on the side pins
• Master keying pins are pressed by driver springs into the cuts on the top of the key creating a shear
line at the top
The initial turning of the key and corresponding turning of the barrel results in:
• Blocking bars rising out of the grooves in the bottom of the barrel chamber
• Offsets in the blocking bars seating in the grooves on the side pins
• Key and cylinder barrel then turn freely inside the cylinder housing
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