Feed dial 3 rotates about fixed axis A. In the downstroke of reciprocating slide 1 in fixed guide d, pin a turns pawl 2 about fixed axis B and releases feed dial 3. At the same time, pawl 4, pivoted on slide 1, disengages a tooth of ratchet wheel 5, sliding over the next tooth with which it is brought into engagement by a flat spring. In the upstroke of slide 1, pawl 4 turns ratchet wheel 5 through an angle corresponding to one tooth. Feed dial 3 is rigidly attached to wheel 5 and is thus indexed one station. At the same time, pawl 2 is released by pin a and is forced by spring b into the next notch of dial 3, locking the dial in its indexed position.
$2786$RG,FD$