The United States of America As Represented by the Secretary of

Marvis N Gillum

Sidney E Hughs

James M Wilkes

Arthur H Waldie

The present invention is drawn to fiber cleaning utilizing an alternating series of cleaning saw cylinders and doffing brush cylinders. The doffing brush cylinders transfer ginned fiber from an upstream cleaning saw cylinder to the next downstream cleaning saw cylinder in such a way that the flow of the fiber changes direction at the pinch point between the downstream cleaning saw cylinder and the doffing brush cylinder. Guiding means including control bars are provided to help guide the ginned fiber from the doffing brush cylinder to the next downstream cleaning saw cylinder at the pinch point. Flow deflecting means including air control bars are provided to deflect a substantial portion of the flow of entrained air from flowing around the doffing brush cylinder.

Fiber cleaning

A fiber cleaning utilizing an alternating series of cleaning saw cylinders and doffing brush cylinders. The doffing brush cylinders transfer ginned fiber from an upstream cleaning saw cylinder to the next downstream cleaning saw cylinder in such a way that the flow of the fiber changes direction at the pinch point between the upstream cleaning saw cylinder and the doffing brush cylinder. Guiding means including control bars are provided to help guide the ginned fiber from the doffing brush cylinder to the next downstream cleaning saw cylinder at the pinch point. Flow deflecting means including air control bars are provided to deflect a substantial portion of the flow of entrained air from flowing around the doffing brush cylinder.

Fiber cleaning apparatus with air flow deflector

Physical properties relating to permeability and porosity of a material in a conveying fluid medium are determined in a device designed to measure the pressure differential between a first stream of fluid applied directly to the material in the medium and a second stream applied to a referencing plenum containing only the medium. The system is sensitive to the component of flow resistant imparted by the material itself without measuring the pressure drop across the entire thickness of material. The invention finds particular application in determining the permeability of cotton at various stages of the ginning operation for the ultimate purpose of monitoring and controlling the moisture content.

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Las Cruces, NM, United States of America

Marvis N Gillum