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Abstract
An indirect method of measuring the parameters that determine the form of angular motion generated by a four-bar crank-rocker sley drive is proposed. No driving-linkage dimensions are needed, and instead the parameters are calculated from the sley and connecting-rod angular positions at intervals throughout the loom cycle, which are more readily measured.
A model sley drive enabled results obtained by this method to be checked against those from direct length measurements, and close agreement was found. Results are also given for a shuttle loom and a water-jet loom. The sley and connecting-rod inclinations corresponding to the parameters for these looms were within 2' of their measured values for at least 70% of timings throughout the loom cycle.