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US 4,364,247 AGranted
Yarn condition sensing device
OwnerJoaquin Muns-Magem, Juan Ibanez-Piinventors
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OwnerJoaquin Muns-Magem, Juan Ibanez-Piinventors
Estimating the term…
The yarn condition sensing device is comprised of a plurality of thin flat forks pivoted at one end thereof between a plurality of closely spaced apart plates protruding from one side of a reed. The opposite end of each fork is provided with a yarn guide aperture for sensing a plurality of yarns under tension. A pair of parallel electrical contacts are secured along the top and bottom edges respectively of the reed which will produce a suitable warning or control signal if contacted by the pivoted fork upon variation in the tension of a single yarn. If the tension of a yarn increases undesirably, the fork engaged with said yarn will be pivoted upwardly into engagement with the electrical contact along the top edge of the reed. if a yarn should break, the fork engaged therewith will fall downwardly into engagement with the electrical contact disposed along the bottom edge of said reed. A plurality of holes are located in a line along the end of the fork opposite the yarn receiving aperture for selectively varying the pivot axis of said forks and for the reception of a suitable locking pin.
A yarn condition sensing device for a knitting machine comprising an elongated reed having top and bottom edges and a plurality of flat parallel plates protruding from one side thereof, a pair of elongated electrical contacts secured to said top and bottom edges respectively of said reed, at least one flat elongated weft yarn fork having an enlarged portion adjacent one end, a straight central portion and a bent end portion having an open-sided aperture therein for the reception of a yarn, said weft yarn fork having a plurality of aligned holes along one edge of said enlarged portion and each of said plates having a plurality of holes aligned with each other, and shaft means having electrical contact means at one end thereof extending through aligned holes in said plate and a selected one of said holes in said fork for pivotally mounting said fork between a pair of adjacent plates whereby upon normal operation of said yarn said fork will be maintained out of engagement with both of said electrical contacts on said reed and upon abnormal functioning of said yarn said fork will be pivoted into engagement with one of said electrical contacts.
Dependencies are inferred from the claim text.