Builder's hardware; a manual for architects, builders and house furnishers . Fig I I 3. Devore Hardware Mfg. Co. Fig. I I 4. Wiles Hardware Mfg. Co. hinge, as in the Nickel and the Wiles hinges, or with thesprings themselves directly hooked onto the hinge-plates. Inthe Devore hinge two springs are used, the ends caught at the Hold-backSpring-hinges 74 BUILDERS HARDWARE. chapter v. centre on one leaf A, while the outer ends catch on hooks at B, B. In this way, it will readily be seen that as the hingesopen, the hooks to which the spring is attached ar

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Builder's hardware; a manual for architects, builders and house furnishers . Fig I I 3. Devore Hardware Mfg. Co. Fig. I I 4. Wiles Hardware Mfg. Co. hinge, as in the Nickel and the Wiles hinges, or with thesprings themselves directly hooked onto the hinge-plates. Inthe Devore hinge two springs are used, the ends caught at the Hold-backSpring-hinges 74 BUILDERS HARDWARE. chapter v. centre on one leaf A, while the outer ends catch on hooks at B, B. In this way, it will readily be seen that as the hingesopen, the hooks to which the spring is attached are separatedfrom each other, and consequently the spring is drawn as soon as the hinges have passed through about three-quarters of the distance they are to swing, the horizontal dis-tance between the points of attachment, at top and bottom ofthe spring becomes less, and the tendency is to draw the dooropen and hold it so. It is very difficult to show this action bya diagram, but Figure 115 may help to make it A represent the jamb and B the door;

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