Two types of steering devices. The image on the left is a combined nut and rack steering gear. It is resistant to backlash and has almost perfect irreversibility. The image on the right is a typical irreversible steering device with a spirally grooved gear plate operating a sector.
Homans, James E. A Practical Illustrated Treatise on Automobiles (New York, NY: Theo. Audel & Company, 1907) 61
Courtesy the private collection of Roy Winkelman