43 3 can have a variety of angular positions with respect to their supporting cross bar 41 thus the first finger 43 1 of fig4 has been adjusted in a clockwise direction to form an angle a with respect to the axis of the bar 41 the middle finger 43 2 is retained in its original orthogonal position shown in fig1 but the third finger 43 3 has been angularly adjusted in a counterclockwise direction to produce an angle b with respect to the axis of the bar 41 the angular adjustment of the fingers 43 1 through 43 3 controls the angle of deflection of the associated rods 33 1 through 33 3 in accordance with the characteristics of the mold structure s moreover as indicated in fig5 the fingers 43 1 through 43 3 need not have closed apertures although such apertures impart additional stability to the deflection action in particular the fingers 43 1 39 through 43 3 39 of fig5 a have open contours 44 1 39 through 44 3 39 which are illustrated in detail for the finger 43 1 39 in the perspective view of fig5 b it will be understood that the form of contour and the extent of closure may be controlled according to the nature of the desired deflection returning to the overall structure 10 of fig1 the ejector cross arm 32 can have a set of apertures to permit the ejector rods 33 1 through 33 3 to be moved to various positions similarly a set of apertures can be used to adjust the positions of the fingers 43 1 through 43 3 according to the changes made in the positions of the corresponding deflector rods in addition to control the position where deflection takes place the entire deflector 40.