again to fig1 15 it will be noted that the mechanism there shown includes the previously mentioned cylinder 201 which was a tom thumb air cylinder series dav style 34 b 34 with a 11 8 34 bore a 2 34 stroke and a 3 8 34 diameter rod with a 3 32 34 2 38 mm diameter hole through the entire length of the cylinder rod the cylinder 201 is mounted to the mounting plate 202 and the rod thereof is fastened at its end to and thus carries a carrier block 203 the carrier block 203 is fastened to the end of the rod by being threaded onto an end portion thereof and a jam nut 217 prevents the carrier block 203 from becoming loosened on the cylinder rod the carrier block 203 has a hole 218 bored therethrough so that stuffer wire fed through the cylinder rod will also feed through the carrier block mounted to the carrier block for movement therewith is a small bearing or clamp pad insert 209 which most conveniently is glued to the carrier block 203 the insert 209 immediately underlies the path of the stuffer wire through the carrier block so that when desired the stuffer wire may be pressed downwardly against the insert 209 in order to clamp the wire thereagainst and prevent relative movement of the stuffer wire with respect to the carrier block 203 the carrier block also has fastened thereto and carries therewith two substantially identical generally c shaped clamps 212 the clamps 212 are fastened to the carrier block by bolts 220 and 221 and a cap 213 is fastened to.