During the failure of elevator chain/belt the entire assembly of bucket & 
the traction element collapses inside the casing & gets scrambled up, 
challenging your skill to set right the things..........  
Imagin if someonw holds the loose ends  of the broken lengths !!!  
YES this is what the chain/belt catcher does. 

ABOUT....  
This is a specially designed attachment provided on the bucket of the elevator which will catch- hold of the chain/belt during its accidental breakage.
This will reduce down time & can prevent heavy production loss &
maintenance  botherations.

As a standard practice we provide this  attachment to most of the elevators supplied by  us. This can also be mounted on the existing old installations.