the stock is emitted from the slice opening 16 it is delivered onto a traveling forming surface the trailing elements are pivotally mounted at their upstream ends and the pivotal mounting is immediately followed by a bent or angular portion which permits a short portion of the trailing elements to extend at right angles to the wall 14 and because of the bend the trailing elements immediately turn and extend in the direction of the slice chamber in fig1 b two outer trailing elements 18 39 extend substantially the length of the slice chamber and an intermediate trailing element 19 39 is constructed of greater length to extend through and slightly beyond the slice opening 16 in the arrangement of fig1 c the downstream ends of the trailing elements 18 34 and 19 34 are curved to substantially conform to the curvature of the slice chamber as shown in fig1 c the upper trailing element 18 39 terminates short of the slice opening 16 whereas the lower trailing element 19 34 extends beyond the slice opening a short distance in fig2 a form of trailing element 18 39 34 is shown in detail the trailing element 18 39 34 has outer layers 18a and 18b and a central integrally sandwiched intermediate layer 18c therebetween the upper end of the trailing element is pivotally supported in a wall 14 39 such as by an enlarged or bulbous ridge 24 at the upper end pivotally mounted in a slot 25 in the wall.