The Hingeing of a Box Lid.
Stopped Hinged Joints for Box Work.—[Fig. 227] is a section through a small box similar to a lady's work-box (the back of the box in the illustration is enlarged in thickness to clearly show the position of the hinge). In this case the knuckle of the hinge is let into the woodwork until it is flush with the back of the box, and the gauge would have to be set to the total width of the hinge. The back edges of the lid and the back edge of the lower portion of the box are planed away at an angle of 45 degrees as indicated by the dotted lines.
[Fig. 228] shows the same box with the lid open, and it will be observed that the chamfered edges come together and form a stop which prevents the lid falling backwards and breaking the box. This method of letting-in the knuckle flush is a useful one for box work because the ordinary stock brass butt hinge can be used. Attention may, however, be called to the "stopped butt-hinge," which is specially made to answer the above purpose; in its action a similar mechanical principle as the one applied to the box is used.
| Fig. 229.—Strap Hinge. | Fig. 230.—Reversible or Double-folding Screen Hinge. |
| Fig. 231.—Pivot Hinge for Screens. | Fig. 232.—Non-reversible Screen Hinge. |
Types of Hinges.—[Fig. 229] is an elongated variety of the butt hinge, known in the trade as "strap hinge," "desk hinge," or "bagatelle hinge." As its name indicates, it is used on folding bagatelle tables, small writing desks, and other types of work that have but a narrow margin on which to fix the hinges. The long, narrow plates are sunk flush into the wood, the knuckle or rounded portion projecting.
| Fig. 233.—Back Flap Hinge. | Fig. 234.—Card Table Hinge. |
| Fig. 235.—Pivot Hinge. | Fig. 236.—Rising Butt Hinge. |
[Fig. 230] is an illustration of the reversible or double-folding screen hinge. Half the thickness of this hinge is let into each wing of the draught screen, allowing the screen to be folded either way. The hinge is costly, but effective in use.
[Fig. 231] is a type of pivot hinge which is used to fix at the top and bottom of a screen.