The travail was complemented at the end of the 19th century by mechanical travails a.k.a. tilt travails. These combined restraints and the ability to rotate the animal horizontally. The most famous one in France was the Vinsot travail, named after the Chartres-based veterinarian who patented it in 1882. Heavily shackled, haltered and with a hood over its head, the animal was placed in the metal structure, which then closed over it. The cage was then laid horizontally on the ground to enable the work of the operator.