Textiles: manufacturing – Warp preparing or handling – With means responsive to sensed condition
Patent
1989-05-23
1990-11-13
Schroeder, Werner H.
Textiles: manufacturing
Warp preparing or handling
With means responsive to sensed condition
19 023, D02H 1308, B65H 6300
Patent
active
049692445
ABSTRACT:
An apparatus and method is disclosed for monitoring depletion of yarn from a textile warp beam wherein yarn actually remaining on the beam is measured radially with respect to the beam, compared with a preselected radial dimension of yarn desired to remain on the beam when the machine is stopped for beam replacement, and machine operation is stopped when the measured radial dimension of yarn equals the predetermined radial dimension of yarn. An analog inductive proximity switch is supported at the periphery of yarn wound about the beam to measure the radial dimension between the switch and the beam by producing an electrical current output proportional to such dimension. A comparator circuit compares the switch output with a reference current selected to correspond to the current output of the switch when at the preselected radial dimension of yarn at which machine operation is to be stopped.
REFERENCES:
patent: 3539782 (1970-11-01), Upshur
patent: 3751937 (1973-08-01), Bassist
patent: 3950523 (1976-01-01), Garcia
patent: 4528631 (1985-07-01), Bogucki-Land
patent: 4707887 (1987-11-01), Leifeld et al.
patent: 4853679 (1989-08-01), Duda
Moghaddassi Majid
Nielsen Arne
DeSandro Bradley Kurtz
Guilford Mills Inc.
Schroeder Werner H.
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