Latch 1 is pivoted to cross-head 2 which is reciprocated vertically by arm 3. In the upward stroke, lower end d of latch 1 engages a tooth on bar 4, carrying it upward. Upon further upward movement of cross-head 2, upper end a of latch 1 runs against lower projection c, turning the latch counterclockwise and disengaging end d from the tooth of bar 4 which drops down by the action of spring 5. The lower end of the latch is held away from the bar only momentarily; as the upper end passes projection c, lower end d engages the next tooth on bar 4 which continues its upward motion until upper end a of latch 1 reaches the next projection c when bar 4 is dropped again. At the end of the upward stroke of cross-head 2, bar 4 is held suspended by latch 1, but is dropped to its lowest position when in the down stroke upper end a of latch 1 reaches upper projection c. The intermittent motion of bar 4 is used to agitate the workpieces in a hopper feeding device.
$1844$LR,SF$