Electricity: motive power systems – Positional servo systems – Digital or numerical systems
Patent
1986-12-24
1989-06-27
Shoop, Jr., William M.
Electricity: motive power systems
Positional servo systems
Digital or numerical systems
139452, 318567, G05B 102
Patent
active
048432903
ABSTRACT:
The present invention relates to a control system for an engagement pin employed in a drum-type weft storage unit which is mainly employed in a jet-loom for storing the weft and for measuring the same in length. A novel control system for an engagment pin employed in a drum-type weft storage unit is provided. An engagement-time is compensated on the basis of a difference in time between a target-time later than the engagement-time of the engagement pin by a normal time-lag, to make it possible that the engagement-time is always set to be optimum in spite of the existanece of variation in shuttling speed of the weft, so that it is possible to keep the variation in length of the delivered weft minimum while the weft feeler is employed in place of the disengagement sensor.
REFERENCES:
patent: 4347470 (1982-08-01), Kohzai et al.
patent: 4504772 (1985-03-01), Matsuura et al.
patent: 4556088 (1985-12-01), Tanaka et al.
patent: 4558723 (1985-12-01), Tanaka et al.
patent: 4587469 (1986-05-01), Ikebe et al.
patent: 4647828 (1987-03-01), Wachi
Sainen Tsutomu
Wakamatsu Kensuke
Martin David S.
Shoop Jr. William M.
Tsudakoma Kogyo Kabushiki Kaisha
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