Apparatus for measuring a cross-sectional area of a travelling fiber sliver
AssigneeRieter Machine Works, Ltd.
InventorRobert Moser
Life of this patent
Estimating the term…
Abstract
The apparatus permits establishment of measuring values, yielding measuring values being representative of the material cross-section area solely of fiber slivers. A through-put duct converging, as seen, in the direction of transport of the fiber sliver is used into which two pressure measuring ducts merge at two measuring points at which the duct diameter is different. The two measuring ducts transmit measuring signals which are further processed in a division circuit means, which yields an output signal. The output signal is used for fiber sliver control or measuring purposes on machines processing fiber slivers or on spinning machines processing such fiber slivers further.
Claims6
An apparatus for establishing measuring values corresponding to a material cross-sectional area of a travelling fiber sliver, said apparatus comprising
- a first pneumatic measuring duct having a converging cross-section for passage of a travelling fiber sliver therethrough;
- a pair of pneumatic pressure measuring ducts communicating with a respective pair of measuring points in said first duct at different cross-sections of said first duct to measure the pressure thereat during travel of a fiber sliver therethrough;
- and
- a division circuit means connected to said pair of transduced pressure measuring ducts to receive pressure measurements therefrom and to divide one pressure measurement into the other to obtain an output signal corresponding thereto, said output signal forming a measuring value of the material cross-sectional area of the travelling fiber sliver.
Dependencies are inferred from the claim text.