| 摘要 |
Individual fasteners are provided for each of several pre-determined holes along a margin of pages of a document for securing the pages together at the holes, each fastener including: a relatively rigid cylindrical insert having a head at one end, the diameter of the insert cylinder being less than the diameter of the holes in the page and the diameter of the head being greater than the diameter of the holes; an elastic member such as a rubber elastic extending from the insert to a bar and attached to the center of the bar, the length of the insert cylinder being less than the minimum thickness of pages to be bound by the fastener and the length of the cylinder plus the length of the bar being greater than the maximum thickness of pages to be bound by the fastener. The fastener is first oriented with the bar extending lengthwise from the end of the cylinder so that it can be inserted into the hole through the document pages, the bar end first; then the extending end of the bar that emerges from the other side of the hole is pulled through the hole by stretching the elastic until the bar fully emerges; and then the bar is turned sideways (transverse) to the axis of the cylinder and released. When the bar is released, the document pages are then held between the head and the bar which are urged together by the elastic holding the pages firmly together. The force of the elastic is not so great as to prevent the document from being opened to any page and laid flat on a table with the elastic stretched between the pages the document is opened to.
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