Chapter XLIII: Section 50: Hinges and Joints

=946. The common double-leaf hinge.=

=947. Rising hinge,= to cause the door to lift slightly as it opens, it will then close of itself without a spring.

=948. Cup and ball hinge.=

=949 & 950. Pintle hinges.=

=951 & 952. Parchment or leather hinging= for wood movements.

=953. Dovetail joint,= used on iron bedsteads, &c.; the circular dovetail is slightly tapered and fitted tight.

=954. Hinge for a door,= required to lay flat against the wall at either side when open.

=955. Hinge pin= for rocking levers on a knife edge.

=956. Door spring hinge,= to return the door always to its central position; the cams press against a roller attached to the springs.

=957. Another method,= with tension springs.

=958. Rocking bearing or knife edge,= used for weighing machines, &c.

=959. Knuckle joint,= halved together; the bolt secures the two parts together.

=960. Door spring hinge= with open springs and toggle movement.

=961. Gate hinges,= with double pintle at bottom to cause the gate to return to the central position without springs.

=962. Link hinge,= for a grid or trap door, to allow it to lie flat when opened.

=963. Bayonet joint.= A common device.

=964. Double scarfed and joggled joint,= for pump, rods, &c., with ferrules and keys to tighten up.

=965. Universal joint.= See Dr. Hooke’s Joint, Nos. 33 and 34.

=966. Knuckle jointed levers.=

=967. The common male and female or nipple and socket rod joint.=

=968. Multiple hinges,= with one centre bolt, for long or heavy doors.

=969. Scarfed rod or bar joint.=

=970. Another form of hinge,= to effect the same object as No. 954.

See also Swivel Joints, Nos. 893 and 894. Sections 49, 4, and 48.