38—The Irregularity of Materials Drafted on Cotton Spinning Machinery and its Dependence on Draft, Doubling and Roller Setting

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Abstract
This paper describes measurements designed to discover how the irregularity introduced during drafting on cotton spinning machinery depends on the processing conditions and upon the properties of the fibres. Empirical relations are given for the added irregularity introduced during drafting as a function of the count or hank number of the material entering the rollers, the draft, the number of ends and the roller setting, and the implication of these relations are discussed. Part I deals with the results obtained on the slubbing and intermediate frames, and briefly di cusses their application to the checking of theories of drafting. Part II describe a more limited series of measurements on the spinning frame, and compares the results with those obtained on the intermediate frame.

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