Pear of anguish

The pear of anguish, also known as choke pear or mouth pear, is a device of disputed use invented in the early modern period. The mechanism consists of a pear-shaped metal body divided into spoon-like segments that can be spread apart with a spring or by turning a key. Its proposed functionality as a torture device is to be variously inserted into the mouth and other parts of the body and then expanded to gag or mutilate the victim; its historical use as a torture device is controversial.
Some scholars have disputed historical accounts of the pear as being suspiciously implausible. While there exist some examples from the early modern period, some of them open with a spring, and the removable key is there not to open the mechanism, but rather to close it. At least one of the older devices is held closed with a cap at the end, suggesting it could not have been opened after inserting it into an orifice without actively holding it shut. There is no contemporary evidence of such a torture device existing in the medieval era, and ultimately the utility of any genuine pears of anguish remains unknown. It is possible that it could have been used to extract juices from fruit.
There is no contemporary first-hand account of these devices or their use. However, through the design of the devices, such as metal consistency and style, a select few are thought to have been made in the early modern period (circa 1600). An early mention is in F. de Calvi's L'Inventaire général de l'histoire des larrons ("General inventory of the history of thieves"), written in 1639, which attributes the invention to a robber named Capitaine Gaucherou de Palioly in the days of Henry of Navarre. Palioly would have used a mechanical gag to subdue a wealthy Parisian while he and his accomplices robbed the victim's home.
Further mentions of the device appear in the 19th century. They are also mentioned in Grose's Dictionary of the Vulgar Tongue (1811) as "Choke Pears", and described as aids used in extortion, "formerly used in Holland."
They were also discussed in a book by Eldridge and Watts, superintendent of police and chief inspector of the detective bureau in Boston, Massachusetts (1897). While accepting that ordinary pear-shaped gags exist, they observed that contemporary robbers used no such device as Palioly's Pear and cast doubt upon its very existence in the first place, saying that "fortunately for us this 'diabolical invention' appears to be one of the lost arts, if, indeed, it ever existed outside of de Calvi's head. There is no doubt, however, of the fashioning of a pear-shaped gag which has been largely used in former days by robbers in Europe and may still be employed to some extent. This is also known as the 'choke-pear', though it is far less marvelous and dangerous than the pear of Palioly."
Another mention is found in Brewer's Dictionary of Phrase and Fable (1898), which claims that "robbers in Holland at one time made use of a piece of iron in the shape of a pear, which they forced into the mouth of their victim. On turning a key, a number of springs thrust forth points of iron in all directions, so that the instrument of torture could never be taken out except by means of the key."
Chris Bishop of Australian National University argues the construction of the oldest indicates it sprang open and screwed closed (as opposed to being screwed open) and the workmanship exceeds that expected from a torture device. Furthermore, the provenance of many of the devices is unknown and the workmanship indicates they are likely of recent manufacture, and the accounts of its use are not contemporary with the Middle Ages, making the accounts suspect. Bishop postulates that the pear's rise to prominence as a medieval torture device originated with a misidentification of an ornate pear (being a mechanism of unknown use, as described) donated to the Louvre by Alexandre-Charles Sauvageot in 1856 as the device described in the 17th-century story about Palioly's gag. As to the original artifacts' use, Bishop concludes:
Alexandre Dumas père utilizes a choke pear in his fictional account of the prison escape of François de Vendôme, duc de Beaufort in the novel Twenty Years After.
A footnote in the book says: “This poire d’angoisse was a famous gag, in the form of a pear, which, being thrust into the mouth, by the aid of a spring, dilated, so as to distend the jaws to their greatest width.”
In the manga Orb: On the Movements of the Earth, a choke pear is used by an inquisitor during an interrogation of suspected heretics.
Though there is little or no evidence of its use, there are a number of extant examples of variously crude, ornate, and elaborate, pear-shaped devices with three or four leaves or lobes, driven by turning a key that rotates the central screw thread, which spreads or closes the leaves. These are generally held in museums devoted to the subject of torture and are described as instruments of torture by distension or evisceration. Some, but not all, have small spikes of uncertain purpose at the bottom of each leaf. However, these devices do not seem to match the descriptions given by Calvi or the 19th-century sources.