Input: pink crank.
R: pitch diameter of fixed gear of internal teeth.
r: pitch diameter of planetary gear (in yellow).
k = R/r = 5
Yellow crank is fixed to the yellow gear.
Yellow crank radius Rc = 0.275r.
Center of red slider traces green line, which is approximately an equilateral pentagon (a hypotrochoid).
Blue slider performs reciprocating motion with dwell at its left end position.
The dwell results from the portion of the green line that are perpendicular to the blue slider moving direction.
The dwell time T corresponds les than 360/k deg. (72 deg.) of input rotation.
For other value of T alter k and Rc.
In this video k is an odd number.
If k is an even number, the dwell can be at two ends of the slider stroke.