the second member 104 in a fully extended position relative to the first member 102 as shown in fig4 a 7 and 8 as is best shown in fig5 the first member 102 is a longitudinally extending l shaped member having two mounting holes 108 through which two mounting screws not shown are inserted for securing the first member 102 to the race table 62 one longitudinally extending slot 110 is provided in the first member 102 for slidably receiving two pegs 112 on the second member 104 a slot hole 114 is positioned on the ends of the slot 110 so that the pegs 112 on the second member 104 can be initially inserted into the slot 110 a notch 116 in the first member 102 defines a first tripping edge or portion 118 and is provided to increase movement of the clamp assembly 40 in the positive x direction 72 as is explained herein in more detail a first spring mount 120 is positioned on the first member 102 for mounting one end of the spring 106 thereto referring now to fig6 the second member 104 of the tripping assembly 100 generally includes a body portion 122 and an extending portion 124 two pegs 112 extend from the side of the body portion 122 and are positioned such that they can.