each other at a common place which is situated substantially midway between the inner and outer surfaces of the wall 1 as is apparent from fig3 where the tang 16 is shown in cross section within the hollow interior of the receptacle which is formed by the shells 2 and 11 it will be noted that along their surfaces which engage each other and which are situated in a notch of the bucket wall 1 the shells are provided with exterior bevelled surfaces 9 whicih define an elongated v groove for receiving welding material which serves to join the shells to each other to form a receptacle according to the invention before this receptacle is introduced into the notch which is formed in the wall 1 thus the wall 1 is formed with a notch extending therethrough and extending inwardly substantially perpendicularly from the substantially straight front cutting edge region of the wall 1 and it is this notch which receives the receptacle 2 11 the inner shell 2 has at its front end region a pair of lips 7 which extend laterally in opposite directions from the reinforcing protrusion 3 and these lips 7 form together witih the remainder of the shell 2 an inner peripheral edge 20 extending along the entire length of the shell 2 and overlapping the inner surface of the wall 1 while being welded to the latter by the line of welding material 8 it will be noted that the bevelled surfaces 9 also extend along the entire length of each of the shells to form the v groove for receiving the welding material which joins the shells to each other along the entire length.