Connector with a spring-biased closure member

A connector comprising a body, first connection means enabling said body to be mounted on a carrying device, second connection means to enable an implement to be engaged with said body, said second connection means comprising spaced apart first and second recesses on said body, the respective connection means being mutually oriented for mounting the connector on the carrying device with said first recess being substantially downwardly opening and said second recess opening in a direction substantially at right angles to the direction of opening of said first recess, at least said first recess having an entrance and being substantially closeable by a closure member so that a part of the implement enters said first recess prior to closure of said first recess by said closure member, a fluid pressure operated piston and cylinder assembly for moving said closure member towards a closing position wherein said closure member substantially covers the entrance to said first recess when fluid pressure is applied to said piston and cylinder assembly for retaining said part of said implement in said recess, and biasing means for moving said closure member towards an open position wherein said first recess is substantially open when fluid pressure is released from said piston and cylinder assembly for removal of said part of said implement from said first recess thereafter.