and the tube 65 are held in position relative to one another by the use of a collar 67 and pin 69 secured with clip 69 u2032 the tube 65 is provided with a striker 70 which locates between the stops 61 62 for a purpose to be explained hereinafter in operation the plough 2 is mounted to the motor vehicle 1 at its near side 4 and on the near side front 34 thereof as previously described the mountings at both locations allowing articulation of the plough 2 from a parked position relatively closely adjacent the near side 4 to an operational position extending outwardly from the near side to assume a ploughing mode to remove material for example snow in its path as the vehicle is driven along a roadway for example by virtue of the primary mounting means 40 the elevation and descent of the plough 2 at its leading end are effected by the lifting means 30 and through the agency of the sector shaped elements 41 42 which afford a range of movement approximating to 30 u00b0 the sliding movement and frictional engagement as between the elements 41 42 provides the load bearing capacity of the primary mounting means thus removing substantially any stress that would otherwise be placed upon the pin 43 the elements 41 42 also permit some limited movement in the plane of their engagement in the event that an obstacle is encountered by way of impact or otherwise the limited movement allowing the plough to override the obstacle thus reducing the likelihood of damage to the plough and its.