[2028]. Crank motion, for a pump, the handle describes an elliptic path.

[2029]. Bouchet’s crank motion to avoid dead centres.

[2030]. Eccentric hand crank motion. The connecting rod has a ring-shaped end, and the strap is revolved on the centre pin by a handle fixed to it.

[Larger plate.]

[2031]. Crank motion to work a sliding tool or movement on a bar or guide.

[2032]. Offset crosshead and guide crank motion for a pump or air compressor.

[2033]. Crank motion to drive a swing arm, or vice versâ.

[2034]. Side crank motion.

[2035]. Atkinson’s crank motion to drive the flywheel two revolutions to one double stroke of the piston.