| 摘要 |
<p>The device is for introducing a book (2) into a case (1) and consists of a tongue (4) on the case pointing towards an open face (3) for introducing the book. The face is as nearly as possible of the same section as the book. The tongue helps to place the object inside the case as its shape forms a ramp to guide the end (7) of the book. The tongue allows the case to be made of thinner and cheaper material than would otherwise be possible.</p> |
