IS 14761 : 2000 Link Type Thread Take up Lever Sub Assembly for Industrial Sewing Machines - Specification

1 Scope

This standard covers the requirements for link type thread takeup lever sub assembly used for sewing machines of the lock stitch,straight stitch flat type stitch among the industrial sewingmachines.

2 References

IS 919 : Part 1 :1993ISO system of limits and fits:Part 1 Bases of tolerances deviationsand fits

IS 1068 :1993Electroplated coatings of nickel pluschromium and copper plus nickel pluschromium

IS 1501 :1969Methods of Vickers hardness test formetallic materials

IS 1570 : Part 2 : Sec 1 : 1979 Schedule for wroughtsteels:Part 2 Carbon steels (unalloyed steel),Section 1 Wrought products (other thanwire) with specified chemicalcomposition and related properties

IS 2092 :1983Plunger type dial gauges

IS 2102 : Part 1 :1993General tolerances:Part 1 Tolerances for linear and angulardimensions without individual toleranceindication

IS 2500 : Part 1 :1992Sampling inspection procedure:Part 1 Attribute sampling plans indexedby acceptable quality level (AQL) forlot by lot inspection

IS 3073 :1967Assessment of surface roughness

IS 4215 :1983Needle bearings

IS 4905 :1968Method for random sampling

IS 10707 :1983Instruments for measurement of surfaceroughness by profile method

IS 12783 :1989Hard metal - Vickers hardness test