Textiles: weaving – Weft manipulation – Shuttle motions
Patent
1976-09-22
1978-02-14
Kee Chi, James
Textiles: weaving
Weft manipulation
Shuttle motions
139341, 139436, D03D 4944, D03D 5140, D03D 4726
Patent
active
040733190
ABSTRACT:
Each shuttle of a multiple-shuttle weaving machine is provided with at least one shuttle magnet. A drive unit acts upon each shuttle magnet to effect positive magnetic transport of the shuttle through the length of the shed, without physically contacting the shuttle. The shuttle monitoring device includes a magnetic-field-dependent resistor for each shuttle to be monitored. The magnetic-field-dependent resistor is moved in parallel to and in synchronism with the drive unit for the shuttle and moves in a region where the resistor is influenced by at least one pole of the shuttle magnet. A machine shut-off device is connected to the resistor and is operative for shutting off the drive units for the shuttles of the weaving machine in response to a resistance change of the magnetic-field-dependent resistor indicative of lack of proper shuttle movement.
REFERENCES:
patent: 2713876 (1955-07-01), Walton
patent: 2781794 (1957-02-01), Bordewieck et al.
patent: 3114398 (1963-12-01), Pfarrwaller
patent: 3618640 (1971-11-01), Linka
Hamma Gerhard
Linka Adolf
Chi James Kee
Mayer & Cie
Striker Michael J.
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