Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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ring binder

One of the earliest forms of LOOSE-LEAF BINDING . The ring binder is a form of mechanical binding similar to the ring notebook paper binder, only much larger. This type of binder has declined in popularity in recent times because it is prone to accidental opening, and, in addition, the bulk of the spine is large in proportion to the quantity of paper it can hold. The binder is usually constructed with two or three rings mounted on a metal backpiece. A mechanism inside the metal back links the rings together so that they all open and close simultaneously, being held closed by spring tension. Some binders open when a small latch at the end of the backpiece is pressed, and close when the latch at the other end is depressed, while others have fiber strips designed to slip over the rings. When these strips are pulled in opposite directions the rings snap open. In the usual case, the bindery produces the binding, but purchases the assembled mechanism. (276 , 339 )




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