Point A of connecting rod 2 in the four-bar linkage CDEF describes connecting-rod curve a which is self-intersecting at point F. Slider 4, moving along slot b-b of slotted link 5, is connected by turning pair A to link 2. Slotted link 5 rotates about fixed axis B. In one revolution of crank 1, link 5 makes one complete revolution about axis B . As point A of connecting rod 2 travels along its path, slotted link 5 first rotates clockwise, then turns through a certain angle in the reverse direction and finally continues in the initial direction.
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