Tool retaining mechanism

Abstract

A securing arrangement for a tool ( 7 ) of an agricultural tillage implement of a type having a tapered interconnection between a socket ( 5 ) on the tool and an adaptor piece ( 3 ) adapted for mounting onto a tine ( 1 ) of the tillage implement. The adaptor piece ( 3 ) has a recess ( 9 ) which can be an aperture or a pair of transverse arcuate slots ( 31 ) for receiving a retaining pin ( 11 ). The socket ( 5 ) on the tool has notches ( 15 ) on its opposed sides and a portion ( 13 ) on the retaining pin in use engages into at least one of the notches ( 15 ) to prevent disengagement of the socket ( 5 ) from the adaptor piece ( 3 ). The adaptor piece can be integral with the tine.

1 . A securing arrangement for a tool of an agricultural tillage implement of a type having a tapered interconnection between a socket on the tool and an adaptor piece adapted for mounting onto the tine of the tillage implement, the adaptor piece comprising a pair of transverse arcuate slots extending from the top of the adaptor piece to the sides of the adaptor piece for receiving a retaining pin and the socket on the tool comprising an aperture on its upper surface and notches aligned with the aperture on its opposed sides, the notches in use substantially aligning with the arcuate slots in the adaptor piece, and a portion on the retaining pin in use engaging into at least one of the notches to prevent disengagement of the socket from the adaptor piece.  
   
   
       2 . (cancelled)  
   
   
       3 .  
   
   
       4 .  
   
   
       5 .  
   
   
       6 . (cancelled)  
   
   
       7 . A securing arrangement as in  claim 1  wherein the retaining clip is a U-shaped wire pin which in use is driven into the aperture in the upper surface of the socket and spreads in the transverse arcuate slots to be retained in therein and terminal portions of the U-shaped wire pin extend into the respective notches to prevent disengagement of the tool from the adaptor piece.  
   
   
       8 .  
   
   
       9 .  
   
   
       10 . A securing arrangement as in  claim 1  wherein the adaptor piece is integral with the tine and the pair of arcuate slots are formed in an upper surface of the tine and the retaining clip is a U-shaped wire pin which in use is driven into the aperture in the upper surface of the socket and spreads in the transverse arcuate slots to be retained in therein and terminal portions of the U-shaped wire pin extend into the respective notches in the socket to prevent disengagement of the tool from the tine.