Apparatus and method for determining whether an adequate amount

Details Apparatus and method for determining whether an adequate amount Apparatus and method for determining whether an adequate amount

1987-03-20

1988-04-19

Lusignan, Michael R.

Coating processes

Measuring, testing, or indicating

Thickness or uniformity of thickness determined

118712, B05C 1100

Patent

active

047388668

ABSTRACT:
An automatic method and apparatus for determining whether adequate size has been applied to yarn ends includes at least one photo-optic detector for counting the number of frays or hairs at various locations of a warp beam made up of yarn ends, comparing the count to a predetermined upper limit of acceptable frays or hairs and displaying the result. An alarm is enabled whenever the detected amount of frays of hairs exceeds the predetermined acceptable upper limit. A feedback control loop provides for the control of yarn transport speed, pressure roll force and/or size pump speed to maintain the amount of applied size within an acceptable range of values.

REFERENCES:
patent: 1815915 (1931-07-01), Kallander
patent: 2797171 (1957-06-01), Fralish
patent: 2810663 (1957-10-01), Reynolds et al.
patent: 3142831 (1964-07-01), Horne et al.
patent: 3158852 (1964-11-01), Schacher
patent: 3801349 (1974-04-01), Wilson et al.
patent: 4024291 (1977-05-01), Wilmanns
patent: 4189335 (1980-02-01), Evans et al.

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