46 affixed in a shelf 48 extending from the rear wall 50 of the machine housing and is formed with a finger 52 for engagement with cam 28 a link 54 pivoted at 56 on cam follower 44 carries a depending pin 58 which is operably connected by way of a bell crank 60 with a work feed controlling lever 62 and by way of a bell crank 64 with manual control means all as in a manner shown for like mechanism in u s pat no 4 448 141 for 34 sewing machine cam controlled feed engaging and disengaging mechanism 34 issued may 15 1984 bell crank 60 is pivotally mounted with a shouldered screw 68 on a fixed plate 70 and is formed with a radial slot 72 wherein pin 58 is received bell crank 60 is also formed with a finger 74 with which to engage the upper end portion 76 of lever 62 lever 62 is pivotally mounted with a shoulder screw 78 on a flange 80 depending from plate 70 and is associated with a feed regulating block 82 as in the manner shown in the aforementioned u s pat no 4 448 141 block 82 is pivotally supported on a pin 84 which is affixed in a boss 85 on stationary structure 86 and has a pin 88 extending therefrom into a slot 90 formed in lever 62 a slide block 92 is constrained in a guide slot 94 on feed regulating block 82.