Detection device for employment in the determination of mutual position of the elements of the passage over a location detector especially in a circular knitting machine

摘要

An apparatus and detector system for sensing whether moving element of a series of elements are in a selected position which apparatus comprises sensor means mounted adjacent the path of travel of the series of elements, the sensor means being capable of projecting and receiving light, means for converting received, reflected light into a voltage pulse and means, including selected gating, for comparing the voltage pulse with other command or related derived signals.