Hinge Hinge A hinge is a mechanical bearing that connects two solid objects, typically allowing only a limited angle of rotation between them. Two objects connected by an ideal hinge rotate relative to each other about a fixed axis of rotation: all other translations or rotations being prevented, and thus a hinge has one degree of freedom. Hinges may be made of flexible material or of moving components. In biology, many joints function as hinges like the elbow joint. There are many types of door hinges. The main types include: Other types include: Since at least medieval times there have been
Stamp hinge “peelable”, meaning that the stamp may be removed from the page, and the hinge from the stamp, without any damage to either. Not all makes of hinge have this property, and the backs of many stamps have “hinge remnants”, where the hinge has torn away rather than releasing the stamp. This is especially common for mint stamps, where the stamp’s own gum adheres tightly to the hinge. Some old stamps may actually have multiple hinge remnants layered on top of each other. Conversely, careless removal of a hinge may take away a layer of the stamp’s paper, resulting in a