Abstract: A device which includes a first member rotatable around the forward end of a working machine arm by a hydraulic cylinder and a second member hanging down at the forward end of the first member. A third cross-pin of an attachment is freely engaged in the vicinity of a basic end of the first member, and a fourth cross-pin of an attachment is freely engaged at a forward end of the second member. The second member includes a hook, which is connected near its center, between a pair of plates, each having a recessed portion, by a fifth cross-pin. The hook is formed into an almost L-shape, divided from the position of the fifth cross-pin into an upper portion and a lower portion. The upper portion is a spindle portion having a second horizontal through-hole for inserting a stop pin, the lower portion is a hook body opening to both the recessed portions. The hook is formed in such a manner that the lower face of the spindle portion partly protrudes into both the recessed portions.

Abstract: An apparatus for inserting electronic elements comprises means for supplying electronic elements, means for cutting to different lengths a plurality of lead wires extended in the same direction from the body of an electronic element supplied by the electronic element supply means, a chuck mechanism for holding the body of the electronic element with the lead wires thereof cut to different lengths by the cutting means, means for changing the direction of the lead wires with respect to insertion holes by swivelling the chuck mechanism by a predetermined angle around an axis perpendicular to the plane of a printed circuit board, an insertion head including insertion means for inserting the lead wires into the insertion holes by moving the chuck mechanism vertically with respect to the printed circuit board, an index table for moving the insertion head stepwise from at least a lead wire forward end position measuring station to a lead wire insertion station, means for measuring the forward end position of each le