and 88 in the slot 86 in the column 23 the two pincers 26 and 28 can pivot about the two rods 24 and 12 in addition the two pincers 28 and 26 also pivot about a ball bearing 51 which sits within two hemispheric holes 80 and 90 one each in each pincer each pincer foot 47 and 50 has slot see slot 89 that holds a roller wheel 48 and 35 that is held in the pincer foot 47 and 50 by an axle 82 and 90 respectively each pincer 28 and 26 also has a hole 54 and 52 into both of which fits a small spring 53 that normally pushes against the jaws of the pincers so as to open them if the pincers are not otherwise restrained however the pincers 28 and 26 are so restrained from opening by a rod 36 which is pressed up between the feet 47 and 50 of the pincers this rod 36 passes between the two roller balls 48 and 35 and on through a rectangular plate 42 to which such rod 36 is rigidly attached and which can be referred to as a rod in plate 91 the rod in plate 91 is normally kept pressed against the feet 47 and 50 of the pincers by a large spring 41 through which extends the rod 36 and which spring sits in a slot 85 in the short column 23 and a short well 92 running along the axis of column 23 is a hole 49 in which the rod 36 movers back and forth when the trigger 31 in the long column is pressed this trigger 31 presses down the rod 43 which.