Section 80.—SPRINGS.

[1460]. Open spiral spring for tension.

[1461]. Close spiral spring.

[1462]. Open spiral spring for compression.

[1463]. Open spiral spring (square thread) for compression.

[1464]. Double volute chair spring.

[1465]. Spindle-shaped open or close spiral spring for tension.

[1466]. Parallel open or close spiral spring with coned ends.

[1467] & [1468]. Volute springs.

[1469]. Torsional spiral spring.

[1470]. Wire staple torsional spiral spring, used for hinging; the ends of the wire are bent at a right angle and driven into the wood.

[1471]. Fixed spring.

[1472] & [1473]. Sear springs.

[1474]. Flat spiral spring.

[1475]. Plate spring.

[1476]. Indiarubber spring for tension.

[1477]. Wire spring.

[1478]. Ribbon spring for torsion.

[1479]. Compound rubber disc spring.

[1480]. Air cushion or spring piston.

[1481]. Laminated plate wagon spring.

[1482]. Compound dished disc or bent plate spring.

[1483]. Loop spring.

[1484]. Flat spiral spring, clock spring or coil spring.

[1485]. Split ring spring.

[1486]. Spring pole for foot hammer motion, &c.

[1487] to [1489]. Spring washers.

[1490]. Spindle-shaped compression spring.

[1491]. Flat spiral spring for piston rings.

See also [Nos. 1729], [630], [1501], [1503], [11], [767], [768]; and [Section 35] (Elastic Wheels) for other forms of springs and applications of them.

For equalising the tension of a spring, see [No. 1592] and [1602].