ANTI-LIGATURE Mechanical 1-way SOS lockset (PR1)

Suitable for low-risk doors where tampering is unlikely, our anti-ligature mechanical 1-way SOS lockset provides just one override method – key override.  

  • Ideal for staff areas or to provide a 'lock-off' function on doors.
  • Patented direct mechanical override means the key and turn-pull operate independently – allowing staff to unlock the door even if a service user holds the turn-pull
  • Addresses the limitations of clutch and geared cylinder 'primary' override systems

 

NB: Our 1-way SOS (Staff Override System) was previously referred to as our classic override option. 

 

OUR DOOR IS ALWAYS OPEN

To find out more call us on 0330 058 0988 or email us at info@safehingeprimera.com

Providing superior safety

The patented direct mechanical override means the key and turn-pull operate independently – allowing staff to unlock the door, even if service user holds the turn-pull. 

How is it safer?

It addresses the limitations of ‘primary’ override systems, like clutch cylinders – which are susceptible to wear and tear and can malfunction, trapping service users in their rooms, and geared cylinders – which rely on a key to disengage the internal turn/pull and can be over-rotated to delay access to the room.

Helping budgets go further

Suitable for low-risk areas, our 1-way SOS lockset is cost-effective, allowing you to select the most appropriate lockset for each door and stretch your budget further.

Combining 1-way and 5-way SOS

We recommend combining our 5-way and 1-way locksets on the same ward, using 5-way SOS where it's needed and maximising your budget using 1-way on lower risk doors.  

Create your own lockset

You asked us to make lockset specification easier. So we created an interactive tool – enabling you to build your own 5-way SOS lockset with ease. 

TRY OUT THE LOCKSET BUILDER

Our 1-way SOS lockset has numerous options for handles, application types and backplates. Use our interactive lockset builder to specify your very own 1-way SOS lockset. 

1-way SOS locksets should only be used on doors where a service user is always unsupervised or situations where they are unlikely to be able to create a barricade or hostage sitation. 

BUILD YOUR LOCKSET

CHESHIRE AND WIRRAL PARTNERSHIP NHS FOUNDATION TRUST CASE STUDY

Designed by Gilling Dod Architects, Ancora House is an award-winning 30-bed CAMHS unit built round an aluminium curtain wall structure.  The en-suite rooms needed simple, practical and safe anti-ligature locksets that were also consistent with window and door handles. The solution was our 1-way SOS locksets and standard pull handles. 

READ FULL CASE STUDY
 

LIMITATIONS OF EXISTING OVERRIDE SYSTEMS

Clutch cylinders

Clutch cylinders

When a service user holds the internal turn/pull to create a barricade, the catch is designed to slip at a higher torque. Operating on a spring and ball-bearing mechanism, the key then turns and unlocks the door.

Over time, however, doors move, expand or distort, limiting clutch effectiveness and making entry times longer in stressful situations.

Wear and tear can also cause the clutch to permanently slip – trapping service users inside and causing distress and fire safety issues.

Geared cylinders

Geared cylinders

When the key is put into a geared cylinder, it mechanically disengages the internal turn/pull, allowing the door to be opened.

However, service users can easily rotate the turn/pull past its maximum closed position, preventing the key fully engaging. Although the key can eventually be forced home, it can damage the cylinder and the key may snap, causing risk of injury and prolonging the barricade because of a blocked keyway.

Issues also arise in rehabilitation or step- down units, where service users may have their own key. This can be inserted into another service user’s lock, disengaging the turn/pull and locking them inside, resulting in anxiety, disruption and fire safety risks.

Glasgow office

Level 4, Skypark 3
14 Elliot Place
Glasgow
G3 8EP

t: 0330 058 0988

Blackpool office 

Unit 8 Bankfield House
250 Bristol Avenue
Blackpool
FY2 0JF

e: info@safehingeprimera.com

 

© Safehinge Primera 2018.  Design By Submarine. Development By Crocodiles
Safehinge Primera is a trading name of Safehinge Limited (SC304496) and Primera Limited (03708136)