Method and apparatus for protecting production of textured textile yarn

Claim 2

In a textile yarn processing apparatus having a hollow rotatable spindle, means for driving the spindle in rotation for twisting textile yarn being processed on the apparatus and means for passing the textile yarn through the hollow spindle at a predetermined linear speed, the improvement therewith of means for protecting against continued production of improperly processed textile yarn otherwise resulting from rotation of the spindle at an improper speed and comprising: speed sensing means operatively associated with the spindle and directly responsive to the rotational speed thereof for sensing rotation of the spindle at an excessive differential in speed from a predetermined standard speed, and warning means operatively associated with said speed sensing means and responsive to determination thereby that the spindle is rotating at an excessive differential in speed from the predetermined standard speed for automatically warning that improperly processed textile yarn is being produced.

Claim 3

Apparatus according to claim 1 wherein said speed sensing means comprises signal generating means operatively connected to the spindle for generating a signal indicative of the rotational speed thereof and signal comparing means operatively connected to said signal generating means for receiving signals therefrom and distinguishing between a signal indicative of spindle rotation within a predetermined differential in speed and a signal indicative of spindle rotation at an excessive differential in speed.

Claim 4

Apparatus according to claim 2 wherein said signal generating means comprises fluid flow inducing means mounted on said spindle for rotation therewith and for effecting a fluid pressure differential as the speed indicative signal.

Claim 5

Apparatus according to claim 3 wherein said signal comparing means comprises fluid pressure sensitive means for balancing the fluid pressure differential effected by the fluid flow inducing means against a standard pressure force.

Claim 6

Apparatus according to claim 2 wherein said signal comparing means comprises signal balancing electrical switching means for balancing the speed indicative signal against an opposing standard signal of like kind and for changing the conductive state of an electrical circuit in response to a determination that spindle rotation is at an excessive differential in speed.

Claim 7

Apparatus according to claim 1 wherein said warning means comprises an annunciator means positioned for ready observation by an operator of the apparatus and actuable in response to said speed sensing means to advise the operator that improperly processed yarn is being produced.

Claim 8

Apparatus according to claim 1 wherein said warning means comprises means operatively connected to the apparatus for interrupting production of textile yarn in response to said speed sensing means and thereby minimizing the quantity of improperly processed yarn produced.

Claim 9

Apparatus according to claim 7 wherein said production interrupting means comprises yarn cutting means for severing the yarn passing through the spindle.

Claim 10

Apparatus according to claim 7 wherein said production interrupting means comprises stop motion means for stopping rotation of the spindle and passage of yarn in engagement therewith.

Claim 11

In a textile yarn texturing apparatus having a yarn twisting spindle, means for driving the spindle in rotation for twisting textile yarn being processed on the apparatus and means for setting the textile yarn in twisted condition, the improvement therewith of means for protecting against continued production of improperly textured textile yarn otherwise resulting from rotation of the spindle at an improper speed and comprising: fluid impeller means operatively connected to the spindle for inducing a fluid floW upon rotation thereof and thereby for effecting a fluid pressure differential indicative of the spindle rotational speed, fluid pressure responsive electrical switching means operatively communicating with said fluid impeller means for sensing the fluid pressure differential effected thereby and for changing the conductive state of an electrical circuit in response to a fluid pressure differential indicative of rotation of the spindle at an excessive differential in speed from a predetermined standard speed, and electrically actuated warning means electrically connected to said fluid pressure responsive means and operative in response to a change in conductive state of the circuit thereby established for warning that improperly textured textile yarn is being produced.

Claim 12

In a textile yarn texturing apparatus having a yarn twisting spindle, means for driving the spindle in rotation for twisting textile yarn being processed on the apparatus and means for setting the textile yarn in twisted condition, the improvement therewith of means for protecting against continued production of improperly textured textile yarn otherwise resulting from rotation of the spindle at an improper speed and comprising: fluid impeller means operatively connected to the spindle for inducing a fluid floW upon rotation thereof and thereby for effecting a fluid pressure differential indicative of the spindle rotational speed, fluid pressure responsive electrical switching means operatively communicating with said fluid impeller means for sensing the fluid pressure differential effected thereby and for changing the conductive state of an electrical circuit in response to a fluid pressure differential indicative of rotation of the spindle at an excessive differential in speed from a predetermined standard speed, and electrically actuated warning means electrically connected to said fluid pressure responsive means and operative in response to a change in conductive state of the circuit thereby established for warning that improperly textured textile yarn is being produced.

Claim 13

Apparatus according to claim 10 wherein said fluid pressure responsive means comprises a U-tube having one leg thereof operatively communicating with said fluid impeller means, a body of electrically conductive liquid in said U-tube and movable relative thereto in response to a balance of fluid pressures imposed thereon, and electrical contact means arranged relative to said U-tube and said body of liquid for completion of an electrical circuit through said body of liquid in response to variations in fluid pressure effected by said fluid impeller means.

Claim 14

Apparatus according to claim 11 wherein said electrical contact means are arranged relative to said U-tube and said body of liquid for completion of an electrical circuit upon a rise in fluid pressure applied to said one leg from said fluid impeller means, such fluid pressure rise being indicative of a drop in spindle rotational speed.

Claim 15

In a method of processing textile yarn which includes passing the yarn through a hollow rotating spindle, the improvement which comprises: continually monitoring directly from the spindle the rotational speed thereof while sensing excessive variations in the rotational speed of the spindle from a predetermined standard rotational speed, and automatically warning that improperly processed yarn is being produced in response to a sensing of an excessive variation in the rotational speed of the spindle to protect against continued production of improperly processed yarn due to improper spindle speed.

Claim 16

In a method of processing textile yarn which includes passing the yarn through a hollow rotating spindle, the improvement which comprises: continually monitoring directly from the spindle the rotational speed thereof while sensing excessive variations in the rotational speed of the spindle from a predetermined standard rotational speed, and automatically warning that improperly processed yarn is being produced in response to a sensing of an excessive variation in the rotational speed of the spindle to protect against continued production of improperly processed yarn due to improper spindle speed.

Claim 17

A method according to claim 13 wherein the step of automatically warning that improperly processed yarn is being produced comprises electrically energizing an annunciator positioned to advise an operator of the yarn texturing process of the unsatisfactory condition thereof.

Claim 18

A method according to claim 13 wherein the step of automatically warning that improperly processed yarn is being produced comprises interrupting production of such yarn to thereby minimize the quantity of improperly processed yarn produced.

Claim 19

A method according to claim 15 wherein the step of interrupting production of yarn comprises severing the yarn passing through the spindle.

Claim 20

A method according to claim 15 wherein the step of interrupting production of yarn comprises stopping rotation of the spindle and passage of yarn therethrough.

Claim 21

In a method of texturing textile yarn by passing the yarn in engagement with a rotating spindle to twist the yarn, and setting the yarn in twisted condition, the improvement which comprises: continually monitoring directly from the spindle the rotational speed thereof while sensing excessive variations in the spindle speed of rotation from a predetermined standard speed, and automatically warning that improperly textured yarn is being produced in response to a sensing of an excessive variation in the rotational speed of the spindle to protect against continued production of improperly textured yarn due to improper spindle speed.

Claim 22

In a method of texturing textile yarn by passing the yarn in engagement with a rotating spindle to twist the yarn, and setting the yarn in twisted condition, the improvement which comprises: continually monitoring directly from the spindle the rotational speed thereof while sensing excessive variations in the spindle speed of rotation from a predetermined standard speed, and automatically warning that improperly textured yarn is being produced in response to a sensing of an excessive variation in the rotational speed of the spindle to protect against continued production of improperly textured yarn due to improper spindle speed.

Claim 23

A method according to claim 18 wherein the step of continually monitoring the rotational speed of the spindle comprises generating a signal indicative of the rotational speed thereof and comparing tHe generated signal to a standard indicative of a predetermined rotational speed of the spindle.

Claim 24

A method according to claim 19 wherein the step of generating a signal comprises inducing flow of fluid in response to rotation of the spindle and thereby effecting a fluid pressure differential as the signal.

Claim 25

A method according to claim 20 wherein the step of comparing the generated signal to a standard comprises balancing the generated fluid pressure differential against a standard pressure force.

Claim 26

A method according to claim 19 wherein the step of comparing the generated signal to a standard comprises balancing the generated signal against an opposing standard signal of like kind.