The mechanism is based on a sliding-link mechanism with two sliders oscillating about axes A and B, and consists of links 1, 2, 3 and 4. Added to this linkage is cross-shaped slider 5. The mechanism is intended for tracing body and space centrodes of links 2 and 4. The tracing stylus is at centre E of slider 5. The mechanism is shown set up for tracing space centrode Cs. To trace body centrode Cb, link 2 is secured to the fixed plane, and link 4 is released. Centrodes of various shapes can be obtained by varying the distance between pivots A and B. This is accomplished by adjusting pivot A along slot F of link 4.
$1245$LG.Ge$