Glazing bars on old conservatory windows.

[Ronan2468]

Picture attached. 

Single standard glass glazing.

I cannot work out how the bars are affixed.

They are bending as I try to lever them off, as you can see in the photo.

Does anyone recognise these? How are they affixed? Will I be able to reuse them once I pull them off?

Any advise appreciated. Thank you so much.

Best, Ronan
 

[Russell griffiths]

Do you mean the beads that hold the glass in. 
are you trying to remove the glass. 
 

older units the rubber gasket wasn’t part of the bead , but was put in separately after the beads are in place. 
lubricate the rubber gasket with soapy warm water and try to pull the rubber out, if it pulls out easily that should then loosen the aluminium bead.