Lance rest

3D red cyan glasses are recommended to view this image correctly. Cuirass showcasing a lance rest on the right side: note the hinged construction

A lance rest (also known as an arrêt de cuirasse or, more simply, an arrêt) is a metal flange that is typically attached to the right side of a breastplate, just under the armpit. The lance rest appeared in the late 14th century, remaining in use until plate armor in general became disused.^[1]

The usage of a lance rest can be more readily gleaned by looking at the French term "arrêt", or "arrest". The lance rest was not used to simply hold the weight of the lance, as the English name might suggest, but to arrest the rearward movement of the weapon.^[1] This would allow the wielder of the lance to couch the weapon more securely, thus delivering a more solid blow to his target while lessening the chance of injury to himself. The lance rest achieves this by spreading the impact of a blow through the breastplate to the torso of the wearer, thus redirecting the force of the blow away from the hand, wrist, elbow, and shoulder.^[1] A ring of leather around the handle of the lance, placed behind the hand but before the armpit or lance rest and typically known as a grapper^[2] or arrêt de lance, is used to further secure the lance in its couched position. When used in conjunction, the lance rest and grapper are able to stabilize the lance considerably when it is in its couched position.^[2]

The lance rest is typically bolted^[3] to the side of the breastplate or secured through the use of metal tabs known as staples.^[4] The majority of the time, the lance rest is hinged so that it can be folded upward to prevent an obstruction of the wearer's sword arm once the lance has been abandoned in favor of a sword.^[1]

References

Components of medieval armour
Head	Armet Barbute Bascinet Burgonet Cervelliere Enclosed helmet Close helmet Great helm Frog mouth Hounskull Lobster tail pot Mail coif Morion Nasal helmet Sallet Spangenhelm Kettle hat
Face	Visor Falling buffe
Neck	Aventail Bevor Gorget Pixane
Torso	Breastplate Brigandine Cuirass Culet Pauncer Plackart Fauld Hauberk Codpiece Lance rest Coat of plates Jack of plate
Arms	Ailette Besagew Couter Gauntlet Pauldron Rerebrace Spaulder Vambrace
Legs	Bases Chausses Cuisses Greave Poleyn Sabaton Schynbald Tasset
Pieces	Gousset Lame Rondel