Method of sensing abnormality of weft detecting device in loom
AssigneeKabushiki Kaisha Toyoda Jidoshokki Seisakusho
InventorAkio Arakawa
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Abstract
Disclosed is a method of sensing an abnormality in a weft detecting device which is employed in a loom in order to detect whether a weft is present in a predetermined interval corresponding to a set crank angle range within one revolution of the crank. When the weft detecting device generates a signal in the predetermined crank angle range excluding the weft detection angle range, the signal is regarded as an abnormal signal. The abnormal signal is processed by circuitry to detect the abnormality in the weft detecting device. Thus, when it is impossible to detect a weft insertion error because of some abnormality in the weft detecting device, the presence of the abnormal signal is utilized to issue an alarm or to stop the operation of the loom.
Claims4
In a loom equiped with a weft detecting device for setting a predetermined crank angle range within one revolution of the crank and for detecting the presence of a weft within the set interval, a method of sensing an abnormality in the weft detecting device of said loom, which comprises the steps of regarding, as an abnormal signal, a signal which is generated by the weft detecting device within a predetermined crank angle range excluding the weft detection angle range, and detecting an abnormality in the weft detecting device on the basis of the abnormal signal.
Dependencies are inferred from the claim text.