Shuttleless weaving looms

Claim 2

A fluid jet loom including a weft yarn supply means, weft yarn feed means comprising a weft drive roll means including pairs of drive rolls, each pair having a weft yarn therebetween, separate means continuously driving each pair of said drive rolls, storage means for each said weft yarn and weft insertion means for each said weft yarn, said storage means being arranged between said weft drive roll means and said weft insertion means, selective control means operatively connected to each pair of drive roll means and operative on signal to cause selected drive rolls to drivingly engage said weft yarn or to become separated so as not to feed said weft yarn, whereby weft yarn may be fed intermittently or continuously by said weft drive roll means to said storage means.

Claim 3

A fluid jet loom including at least two weft yarn supply means, a weft yarn feed means for each weft yarn supply means including pairs of drive rolls, each pair having a weft yarn therebetween, separate means continuously driving each pair of said drive rolls, selective control means operatively connected to each pair of drive roll means and operative on signal to cause selected drive rolls to drivingly engage said weft yarn or to become separated so as not to feed said weft yarn, a storage means for receiving said measured and fed weft yarn continuously and adapted to retain such fed weft yarn for intermittent removal and injection, a movable weft injection means, a weft insertion nozzle for each said weft yarn in said weft injection means, and fluid supply means for said weft insertion nozzle, means for selectively actuating each said weft yarn feed means in accordance with a predetermined weft insertion program and means for simultaneously moving said movable weft injection means to position a selected weft insertion nozzle in a picking position for injection of weft in accordance with said predetermined weft insertion program.

Claim 4

A fluid jet loom including at least two weft yarn supply means, a weft yarn feed means for each weft yarn supply means including pairs of drive rolls, each pair having a weft yarn therebetween, separate means continuously driving each pair of said drive rolls, selective control means operatively connected to each pair of drive roll means and operative on signal to cause selected drive rolls to drivingly engage said weft yarn or to become separated so as not to feed said weft yarn, a storage means for receiving said measured and fed weft yarn continuously and adapted to retain such fed weft yarn for intermittent removal and injection, a movable weft injection means, a weft insertion nozzle for each said weft yarn in said weft injection means, and fluid supply means for said weft insertion nozzle, means for selectively actuating each said weft yarn feed means in accordance with a predetermined weft insertion program and means for simultaneously moving said movable weft injection means to position a selected weft insertion nozzle in a picking position for injection of weft in accordance with said predetermined weft insertion program.

Claim 5

A fluid jet loom including at least two weft yarn supply means, a weft yarn feed means for each said weft yarn supply means including pairs of drive rolls, each pair having a weft yarn therebetween, separate means continuously driving each pair of said drive rolls, storage means for each said weft yarn, a movable weft injection means, a weft insertion nozzle for each said weft yarn in said weft injection means, and fluid supply means for said weft insertion nozzle, means for selectively actuating each said weft yarn feed means including selective control means operatively connected to each pair of drive roll means and operative on signal to cause selected drive rolls to drivingly engage said weft yarn or to become separated so as not to feed said weft yarn in accordance with a predetermined weft insertion program and means for simultaneously moving said movable weft injection means to position a selected weft insertion nozzle in a picking position for injection of weft in accordance with said predetermined weft insertion program.

Claim 6

A fluid jet loom including at least two weft yarn supply means, a weft yarn feed means for each said weft yarn supply means including pairs of drive rolls, each pair having a weft yarn therebetween, separate means continuously driving each pair of said drive rolls, storage means for each said weft yarn, a movable weft injection means, a weft insertion nozzle for each said weft yarn in said weft injection means, and fluid supply means for said weft insertion nozzle, means for selectively actuating each said weft yarn feed means including selective control means operatively connected to each pair of drive roll means and operative on signal to cause selected drive rolls to drivingly engage said weft yarn or to become separated so as not to feed said weft yarn in accordance with a predetermined weft insertion program and means for simultaneously moving said movable weft injection means to position a selected weft insertion nozzle in a picking position for injection of weft in accordance with said predetermined weft insertion program.

Claim 7

A fluid jet loom as set forth in claim 3 in which each said weft yarn feed means comprises spindles for the rolls of said weft drive roll means, meshing pinions on said spindles for rotating said weft drive rolls, a drive pulley on one of said spindles having a belt mounted thereon for driving said drive pulley, said weft drive roll means being movable between a first position in which the surfaces of said weft drive rolls engage the weft yarn and a second position in which the surfaces of said weft drive roll means are separated by a distance sufficient to disengage the weft yarn and insufficient to disengage the meshing pinions of said spindles, each of said weft drive roll means being located between said weft yarn supply means and said storage means.

Claim 8

A fluid jet loom as set forth in claim 3 having a mounting unit for said movable roll of said pair of drive rolls, said mounting unit being pivotally attached to a carrier unit for the non-movable other roll of said pair of drive rolls, resilient means for normally holding said drive rolls in driving relationship, and means actuatable in accordance with a predetermined program for separating said weft drive rolls.

Claim 9

A fluid jet loom including at least two weft yarn supply means, a weft yarn feed means including weft drive roll means for each said weft yarn supply means, each said weft drive roll means having a pair of drive rolls which are movable towards and away from each other selectively to feed a weft yarn or to discontinue such feed in accordance with a pre-determined program, a mounting unit for one roll of said pair of drive rolls, said mounting unit being pivotally attached to a fixed carrier unit for a positionally fixed roll of said pair of drive rolls, and resilient means connecting said mounting unit and said fixed carrier, and program controlled means for separating each pair of said rolls; said program controlled means including a program element, a solenoid for controlling the spacing of said weft drive rolls, signal generating means for generating a signal, and sensing means; said signal generating means being connected to said solenoid, said solenoid being adapted relatively to move said weft drive rolls towards and away from each other upon receipt of said signal in accordance with a signal generated by passage of a program card past a sensing means, said solenoid being arranged to cause disengagement of said weft drive rolls, storage means for each said weft yarn, a movable weft injection means, a weft insertion nozzle for each said weft yarn in said weft injection means, and fluid supply means for said weft insertion nozzle, means for moving said movable weft insertion means to position a selected weft insertion nozzle in a picking position for injection of weft in accordance with a signal generated by the passage of said program card past an additional sensing means.

Claim 10

A fluid jet loom including at least two weft yarn supply means, a weft yarn feed means including weft drive roll means for each said weft yarn supply means, each said weft drive roll means having a pair of drive rolls which are movable towards and away from each other selectively to feed a weft yarn or to discontinue such feed in accordance with a pre-determined program, a mounting unit for one roll of said pair of drive rolls, said mounting unit being pivotally attached to a fixed carrier unit for a positionally fixed roll of said pair of drive rolls, and resilient means connecting said mounting unit and said fixed carrier, and program controlled means for separating each pair of said rolls; said program controlled means including a program element, a solenoid for controlling the spacing of said weft drive rolls, signal generating means for generating a signal, and sensing means; said signal generating means being connected to said solenoid, said solenoid being adapted relatively to move said weft drive rolls towards and away from each other upon receipt of said signal in accordance with a signal generated by passage of a program card past a sensing means, said solenoid being arranged to cause disengagement of said weft drive rolls, storage means for each said weft yarn, a movable weft injection means, a weft insertion nozzle for each said weft yarn in said weft injection means, and fluid supply means for said weft insertion nozzle, means for moving said movable weft insertion means to position a selected weft insertion nozzle in a picking position for injection of weft in accordance with a signal generated by the passage of said program card past an additional sensing means.

Claim 11

A fluid jet loom as set forth in claim 6 in which the sensing means and the additional sensing means are photocells, said program element being provided with reflective material strips.

Claim 12

A fluid jet loom as set forth in claim 6 incluDing a fluid supply means, a fluid supply line from said fluid supply means to each insertion nozzle, valve means in said fluid supply means actuatable by said additional sensing means to ensure that fluid is supplied only to that one of said weft insertion nozzles which is in a picking position.

Claim 13

A fluid jet loom as set forth in claim 6 in which the means for moving the weft insertion means to position a selected weft insertion nozzle in a picking position includes a continuously driven cam, a cam follower lever associated therewith, a pair of levers associated with said cam follower lever, one lever being associated with the weft injection means and the other with a fluid jet selective valve, said cam follower lever having program operated catch means thereon whereby it may be selectively coupled to and uncoupled from means for operating said pair of levers, said catch means being movable between a first position in which said cam follower lever may oscillate without actuating said pair of levers and a second position in which said catch means becomes operative to move said levers to move a weft injection head to an operative position and to operate said selector valve to enable fluid to be supplied to said weft injection head and means for holding said cam follower in said second position for a pre-determined number of increments of time, said cam follower when in said second position being unaffected by rotation of said means.

Claim 14

A fluid jet loom as set forth in claim 9 including a drop rod for operating said program operated catch means, a solenoid operated pivotal selector lever associated with said drop rod and having second catch means thereon, said selector lever catch in one position allowing oscillation of said cam follower lever and in a second position serving to hold said cam follower lever away from said cam.

Claim 15

A fluid jet loom as set forth in claim 10 in which said cam follower lever and said program operated catch means are adapted to contact each other to cause said cam follower lever to move said weft injection head and to operate said selector valve, said contact occuring after said drop rod has been engaged by said solenoid and thereafter the cam follower lever is moved to a position to oscillate said drop rod.

Claim 16

A fluid jet loom including at least two weft yarn supply means, a weft yarn feed means including weft drive roll means for each said weft yarn supply means, each said weft drive roll means having a pair of drive rolls, separate drive means in continuous driving engagement with each roll of said pair of drive rolls one roll of each pair of said drive rolls is movable towards and away from the other selectively to feed a weft yarn or to discontinue such feed in accordance with a pre-determined program, a program control means for each said weft drive roll means for moving said one of said drive rolls relative to the other of said drive rolls, said program control means comprising a lever operably associated with said movable drive roll, a cam follower on said lever, and a cam, said cam follower bearing upon said cam thereby to move said movable drive roll in accordance with a program defined by the form of said cam, storage means for each said weft yarn, a movable weft injection means, a weft insertion nozzle for each said weft yarn in said weft injection means, and fluid supply means for said weft insertion nozzle, means for moving said movable weft injection means to position a selected weft insertion nozzle in a picking position for injection of weft in accordance with said pre-determined weft insertion program.

Claim 17

A fluid jet loom including at least two weft yarn supply means, a weft yarn feed means including weft drive roll means for each said weft yarn supply means, each said weft drive roll means having a pair of drive rolls, separate drive means in continuous driving engagement with each roll of said pair of drive rolls one roll of each pair of said drive rolls is movable towards and away from the other selectively to feed a weft yarn or to discontinue such feed in accordance with a pre-determined program, a program control means for each said weft drive roll means for moving said one of said drive rolls relative to the other of said drive rolls, said program control means comprising a lever operably associated with said movable drive roll, a cam follower on said lever, and a cam, said cam follower bearing upon said cam thereby to move said movable drive roll in accordance with a program defined by the form of said cam, storage means for each said weft yarn, a movable weft injection means, a weft insertion nozzle for each said weft yarn in said weft injection means, and fluid supply means for said weft insertion nozzle, means for moving said movable weft injection means to position a selected weft insertion nozzle in a picking position for injection of weft in accordance with said pre-determined weft insertion program.

Claim 18

A loom according to claim 12 wherein there is also provided a means for supplying fluid only to the insertion nozzle located at the picking position.