US1419731A - Stopping mechanism for textile machinery - Google Patents

Description

E. F. HATHAWAYi. STOPPING MECHANISM FOR TEXTI LE MAGH|NERY..

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2 SHEETS-SHEET 2- lave tor.- Edgawl'yiaikaway,

EDGAR' F. I-IATHAWAY,-OF DORCHESTER, MASSACHUSETTS, ASSIGNOR TO MOHA WK CARPET MILLS, INQ, OF AMSTERDAM, NEW YORK, A CORPORATION OF NEW "YORK.

STOPPING MECHANISM FOR TEXTILE MACIFINERY.

Specification of Letters Patent.

Patented June '13, 1922;

Application filed- March 5, 1921. SeriaI No. 449,889.

To all whom it may cancer n.

Be it known that I, EDGAR F. HATHAWAY, a citizen of theUnited States, and a resident of Dorchester, in the county of Suffolk and State of Massachusetts, have invented an Improvement in Stopping Mechanism for Textile Machinery, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings, representing like parts.

This invention relates to stopping mechanism for textile machinery and particularly to weft stopping mechanism, and more particularly to weft stopping mechanism for chenille forming mechanism wherein separate weft lengths are laid in the shed as disclosed in my application Serial No. 449,887,

In order that the principle of the invention may be readily understood, I havedisclosed a single embodiment thereof in the accompanying drawings, wherein Fig. 1 is a view partially in side elevation and partially in vertical section of a stop motion embodying my invention;

Fig. 2 is a detail representing the lower part of the mechanism shown in Fig. 1 but with a different position of parts;

Fig. 3 is a view in side elevation of the upper'part of themechanism shown in Fig. 1 and indicating also the weft. presenting device and the weft carrier or weft laying device;

Fig. 4: is a detail in side elevation of the upper part of the mechanism shown in Fig. 1 andlindicating, upon an enlarged scale, in full and in dotted lines, two positions of the parts; 7 I

Fig. 1 is a detail in elevation of a part of the construction shown in Fig. 4;

Fig. 5 represents-the clutch shaft and con nections thereto for positioning the parts for high speed, for low speed and for neutral position; and

Fig.6 is a view in side elevation and vertical section representing the brake means preferably employed.

In my co-pending applications Serial Nos. 149,88? and 449,888, I have disclosed means for forming chenille and including means for presenting the weft thread or threads selectively to be grasped by a suitable weft carrier. Herein I have indicated at 1 in Fig. 3 one of the weft tubes or fingers by .passes.

which yarn is selectively presented to be grasped by the jaws 2' of the weft carrier 3. Preferably also and as shown in certain of said applications weft severing means are employed to sever the weft as laid at each nism in case the .weft thread fails of presentation or other like weft fault. I have indicated diagrammatically the warps forming the shed at 41-, 5 in Fig. 1 and take- up rolls 6, 7, over which the woven fabric 8 The weft itself is indicated at 9 in Figs. 1 and 3. At a suitable point between the end 10 of the weft presenting finger 1 and the weft seizing position of the weft carrier 8, I provide a feeler l'lpreferably formed as a finger upstanding from-a rock shaft 12 which is mounted in guidesin uprights 13, 13 upon the top of the lay.14@, all 'as'indi'cated in Fig. 3. v I

Fast upon the rock shaft 12 is a second finger 15 and also fast thereon is a depending lever arm 16 having a hook 17 at its lower end. described, the rock shaft12 is caused to rock so that the finger 11 feels for the weft 9. If the latter be present the finger 11 is limitedin its movement thereby, but if the In a manner to be hereinafter weft'be absent, then the finger limoves into the dotted line position shown in Fig. 4, thereby causing the finger 15 and the'lever arnr16 tomove'into their dotted line positions, also shown in Fig; 4, and thereby to stop the operation of the mechanism in a manner which will be hereinafter described.

Upon a suitable shaft 18 is fast a cam 19 having a projection 20, said cam rotating once to each beat-up of the lay. Bearing upon the periphery of the cam 19 is arroll 21 carried by the arm- 22 of a lever pivoted at 23, the opposite arm 2 1 of said lever havingpivoted at its outer end at 25 a bell crank lever provided with arms 26, 27. Tapped into the free end of the arm' 26 is a threaded bolt or screw 28, the lower end of which is adapted to take against a stop or projection 29 upon the face of the lever arm 24. A coil spring 30 is attached at one end to the lever arm 26 and at its'other end to'the lever arm 24, so as yielding'ly to hold the lower end of the bolt or screw 28 against the stop 29. The lever arm 26is provided upper end has a laterally extending head 34 adapted to be engaged by the finger 15 in the swinging movement of the latter and to be depressed if the finger 15 moves into its dotted line position indicated in Fig. 4. At its lower end the rod 33 has secured thereto a transversely extending foot or member 35 provided with a laterally extending projection 36 indicated most clearly in Fig. 4*.

When the lever arm 16 with its. book 17 is moved as described in the dotted line po- 'sition shown in Fig. 4, it intercepts or comes into the path of downward movement of the projection 36 of the member 35. The member 35 fast upon the upright rod 31 and the engagement ofthe projection 36 thereon with the book 17 prevents the full downward normal movement of the rod 31 due to the action of the cam 19, 20. I

In'the normal operation'of the parts the rod 31 is constantly reciprocated vertically from the cam 19, 20, and the small bell crank lever 26, 27 has no rocking movement or movement relative to the swinging movement of the lever 22, 24. In such normal operation of the parts, the arm 27 of the I 24, the coiled spring 37, which encircles the lower end of the rod 31 between the lever arm 26 and the fixed collar 38, is compressed and offers sui'licient resistance to prevent the normal swinging of the bell crank 26, 27. The result is that the lower end 39 of the lever'arm 27 engages the shoulder 40 of the lever arm 41 of a lever pivoted at 42. The opposite arm 43 of said lever is provided with a projection 44 furnishing a shoulder 45. The lever 41, 43 is normally held in the position shown in Fig. 1 by a coiled spring 46 connected at one end at 47 to the lever arm 41 and at its other end at 48 to a projection upon the large bell crank lever 22,

In a suitable bracket 49 shown most clearly in Fig. 5, there is mounted a rock shaft 50 having at one end a bevel pinion 51 meshing with a similar pinion 52 upon the clutch shaft 53 hereinafter more fully referred to. Loose upon said shaft 50 and as best shown in Fig. 1 is a lever arm 54 which at its upper endhas T or hammer head providing shoulders 55, 56. The lever arm '54 is provided with. a laterally extending porthe concentric edge 67 of the rib 63 and the shoulder 65, for apurpose hereinafter more fully stated.

Pivot'ally connectedat 68 to the lever arm 54 is a rod 69 which is guided'for sliding movement in a fixed post or part 70 upon a suitable part of the framing. The said rod 69 has fast thereon two collars 71, 72 be tween which and the said. post 70 are pro vided two coil springs 73, 74. 'Tension of the said two springs is equalized when the mechanism is in neutral position, that is, when the mechanism is stopped upon the breaking of a thread and as indicated in Fig. 2. When, however, the mechanism is running at high speed which is the position of the parts indicated in Fig.1, the spring 73 is under the greater compression and tends to move the rod 69 to the right viewing Fig. 1.

Assuming the absence of the weftf9 at the proper time, it will be evident that the finger 11 will descend into the dotted line position indicated in Fig. 4, and thereupon the downward movement of the rod 31will be stopped. Consequently the lever arm 27 will engage the shoulder 40 of the lever arm 41 and will rock said lever 41, 43 so that the lateral projection 66 rides upon the shoulder 64 onto the concentric face 67 of the rib 63. This will withdraw the notch 45 of the lever arm 43 from the shoulder 55 of the lever arm :54 and consequently the latter is free to be moved in a clockwise direction, viewing Fig. 1, under the stress of the spring 74. Such movement of the lever arm 54 causes like movement of the segment-like member 61 through engagement of the rib 59 with the edge of the lever arm 60, there being as indicated a certain amount of lost motion or play for a purpose hereinafter set forth. The movement of the segment-like member 61 which, as stated, is fast upon the shaft 50, causes rocking movement of the latter,-and consequently rocking movement of the clutch shaft 53. Fast upon said shaft 53 are yokes 75, 76 which engage the groove 77 in the clutch member 78, thus throwing the parts into the neutral position indicated in Fig. 2.

Upon the main drive shaft 79 which carries the clutch member 78 are provided two gears 80, 81 which when fast thereon respectively drive the mechanism at low speed and at high speed. Consequently the position' of the clutch shaft 53 determines whether the machine shall operate at low speed or at high speed or shall stand still.

When the parts of the mechanism are operating at high speed, the shoulder 55. of the lever 54 is in engagement with the shoulder 45 of the lever arm 43, as indicated in Fig. 1, and the spring 74 is under compression, the. spring 73 at such time being substantially neither under expansion nor compression. When the machine is operated at low speed, the shoulder 82 at the opposite face of the projection 44 of thelever arm 43 comes into contact with the shoulder 56 of the lever 54 and at the same time the spring, 7 3 is under compression and the spring 74 is free from compression. hen

the parts are in the neutral or stopped position, indicated in Fig.- 2, both springs 73', 74 are substantially free from compression and equalize each other, as previously stated.

I. provide means whereby the mechanism may manually be brought into any one of the three positions described. In other words, there is capacity for stopping the machine, either automatically or manually, and for bringing the mechanism manually into either high speed or low speed. Moreover there is capacity to stopthe machine whether it be running at high speed or low speed provided there is failure'or' fault of the weft.

In order to perform said manual operations, I have herein for the purpose pr0- vided' a lever 83 pivoted at 84 upon the framing and having a handle 85 for manual operation. To a projection 86 of said lever arm there is pivoted at 87 a link- 88' which at its opposite end is pivoted at 89 to the arm 60 of the segment-like member 61. lVhen said lever 83-occupies the full line position shown, the mechanism is running athigh speed. lVhen it is desired to stop the mechanism manually, the lever 88 is moved in a clockwise direction into the dotted line position indicated in Fig.1, this being an intermediate position, and it is obvious that the pull through said lever 83 upon the segmentike lever 61 causes the projection 66 of the lever arm 41 to ride up the inclined shoulder 64, thereby releasing the projection 44 from the head of the lever 54. This action is permitted because of the. fact that the ribs 58, 59 are spaced apart a greater distance than the width of the lever arm 60, thus permitting initial movement of the segmentlike lever 61 before movement of the lever arm 54 is possible. The riding of the pro joction 66 up the inclined surface 64 and onto the concentric face 67 of the rib 63 causes the swinging of the lever arm 43 in a contraclockwise direction, thus releasing the lever 54 and permitting. said lever to be brought into the neutral'position indicated in Fig. 2. In order to bring the parts into the low speed position, the lever arm 83 is swung still further in a clockwise direction to the second position indicated in dotted lines, and thereupon the shoulder 56' of the lever 54 is brought into engagement with the shoulder 82 at the right hand side of. the projection 44 of the lever arm 43.

Preferably I provide means to apply a brake to the drive shaft 79 when the" mechanism is brought into neutral position. For this purpose and as shown most clearly in Figs. 5 and 6, I have keyed upon the shaft 79a drum or disk 90 to which is adapted to be applied a brake shoe 91 pivoted at 92 upon a lever arm'93 itselfpi-voted at 94 upon the framing. Integral with the lever arm 93 is a lever arm 95 having a split portion to receive an adjusting screw 96, ascrew 97 being provided to tighten the split portion with respect to said screw. The lower end ofthe screw 96 may take against a: lateral projection 98 on a lever arm 99, itself also fast with the lever arms, 93, 95. The lever arm 99 is normally pressed in a clockwise direction by a pin or pushrod 100, the inner end of which takes into a socket 101 in the lever 93, there being an elongated coil spring 102 about said pin or push rod and confined between a collar 103 fast on said rodor pin and the bearing upon the framing, not shown, for said pin. 7

Upon the shaft 50 for operating, the clutch lever is fast a cam lever 104 having therein a notch 105 into which a roll 106' uponthe lever arm 99 is adapted to take. When the cam lever 104' is in the position shown in Fig. 6, the clutch is in its neutral position, and the spring 102 is permitted because of thereception of the pin 106 in the notch105 to force the rod. or pin to the left, viewing Fig. 6, and thereby to force the brake 91 against the disk or drum'90. lVhen the mechanism is running at high speed, the roll 106 is out of the notch and bears against the cam lever 104 at substantially the point 107. When the mechanism is running at low speed, the said roll 106 bears uponthe surface of the said cam lever 104 at substantially the point 108.

It will be understood from the foregoing that in the event of weft fault or failure,-the

mechanism, whether running at low speed Having thus described one illustrative embodiment of my invention, I desire it to be understood that although specific terms are employed, they are used in a generic and descriptive sense and not for purposes of lim- 'ltatlon, the scope of the invention being set members adapted to be actuated by said clutch when in its high speed position or low speed position. respectively, so as to drive the mechanism at sa1d respective speeds, means to supply yarn or thread, a

detector for said yarn or thread, and means caused to. function by said detector throughpredetermined defective condition of the yarn or thread, thereby to move the clutch into said neutral position.

2. Textile mechanism comprising in combination, a shaft having a high speed gear and a low speed gear thereon, and a clutch adapted effectively to drive either of said gears or to be moved to a neutral position, means to supply yarn or thread, a detector for said yarn or thread, and means caused to function by said detector through predetermined defective condition of the yarn or thread, thereby to move the clutch into said neutral position. I

3. Textile mechanism comprising in combination, -ears to drive the mechanism at high speed and at low speed respectively, a clutch adapted to render either of said gears effective or to be moved to a neutral position, manual means to move said clutch into any one of said three positions, means to supply yarn or thread, a detector for said yarn or thread, and means caused to function by said detector through predetermined defective condition of the yarn or thread, thereby to move the clutch into said neutral position.

1. Textile mechanism comprising in combination, gears to drive'the mechanism at high speed and at low speed respectively, a lever 83 having three positions, a clutch, connections from said lever to said clutch to move the clutch into effective driving relation with said high speed gear or said low speed gear or into a neutral position, means to supply yarn or thread, a detector for saidyarn or thread, and means. caused to function by said detector through predetermined defective condition of said yarn or thread to move the clutch from either high speed or low speed position into neutral. position.

5 Textile mechanism comprising in combination, gears to drive the mechanism at high speed and at low speed respectively, a clutch adapted to, be moved to cause the functioning ofeither the high speed gear or the low speed gear or to be moved into an intermediate neutral position, means to supply yarn or thread, a detector for said yarn or thread, and means caused to iunction'by said detector through predetermined defec tive condition of said yarn or thread to move the clutch from either high speed or low speed position into neutral position,

6. Stop mechanism comprising in combination, a'member mounted for to and fro movement, means moved by movement of said member to-stop the mechanism of which said member is a part, a second member cooperating with the first member and having a'iormation adapted to be engaged by either one of two formations upon the first member, and whereby the running of the meche anism at two diiferent speeds is controlled, and means governed by predetermined; defectivecondition in the material acted on by the mechanism to move said second mentioned member so-as to permit the first mentioned member to occupy an intermediate position out of contactwith the said formations, whereby the mechanism is stopped.

7. Textile mechanism having means either to drive the same at high speed or at low speed, means to supply a thread or yarn, and means to stop the machine upon predetermined defective condition of said yarn or thread from either highspeed or low speed, said means including a member mounted for to and fro movement, means adapted to be moved thereby to effect the driving of the mechanism at high speed or low speed or to stop the same, a second member having a formation to engage spaced portions of the first member, and means controlled by the yarn or thread to move said formation upon the second member out of engagement with the first member for the purpose set forth.

8. Textile mechanism having means either to drive the same at high speed or at low speed, means to supply a thread or yarn, and means to stop the machine upon predeterminedldefective condition of said yarn or thread from either high speed or low speed, said means including a member mounted for rocking movement, means moved by said member to effect driving of the machine at high speed or low speed or stop the same, a second member having a formation to engage spaced portions of the'first member,

determine the running of the machine at high speed or low speed, or the stoppage thereof, a second member 43 having a formation 44, a leeler for the yarn or thread, and intermediate connections between said teeler and said second member 43.

10. Textile mechanism having means either to drive the same at high speed or at low speed, means to supply a thread or yarn, and means to stop the machine upon predetermined detective condition of said yarn or thread from either high speed or low speed, said means including a member 54 mounted for rocking movement, a member 63 moved by movement of the member 54, a pivoted member 41, 43 having a formation 44 to be engaged by spaced portions of the member 54, a feeler for the yarn or thread, and a connection including the member 31 between said 'feeler and said member 43.

1'1. Textile mechanism having means either to drive the same at high speed or at low speed, means to supply a thread or yarn,

and means to stop the machine upon predetermined defective condition of sald yarn or thread from either high speed or 'low speed,

said means including a member 54 mounted for rocking movement, means operatively connected with said member and adapted to be moved thereby to control the high speed or the low speed or the stopping position of the mechanism, a member 43 having a formation to engage spaced portions of the member 54, a feeler for the yarn or thread, reciprocatory means to move said feeler, and means moved by said reciprocatory movement to change the position of said member 43.

12. Textile mechanism having means either to drive the sam at high speed or at low speed, means to supply a thread or yarn, and means to stop the machine upon predetermined defective condition of said yarn or thread from either high speed or low speed, said means including a member 54 adapted to determine whether the machine shall run at high speed or at low speed or be stationary, a movable member 43 having a formation to engage spaced portions of the member 54, a feeler, a rod 31 to move the same, means tending normally to reciprocate the rod 31, and means caused to move by an 1nterruption in the movement of the member 31 to change th position of the member 43 with respect to the member 54.

13. Textile mechanism having means either to drive the same at high speed or at low speed, means to supply a thread or yarn, and means to stop the machine upon predetermined defective condition of said yarn or thread from either high speed or low speed, said means including a member 54 to place the mechanism in either high speed or in low speed or in stopping position, a member 43 having a formation to engage spaced portions of the member 54, means governed by the presence or absence of yarn or thread to govern the relation of the member 43 with respect to the member 54 and manual means to shift said member 54.

14. Textile mechanism having means either to drive the same at high speed or at low speed, means to supply a thread or yarn, and means to stop the machine upon predetermined defective condition of said yarn or thread from either high speed or low speed, said means including a member 54 to determine the position of the mechanism for high speed, for low speed or for stopping, a lever 53 having a formation to engage spaced portions of the member 54, a feeler for the thread or yarn, operative connections between said feeler and a lever 53 to control the position of the latter.

15. Textile mechanism having means either to drive the same at high speed 9r at low speed, means to supply a thread or yarn, and means to stop the machine upon predetermined defective condition of said yarn or thread from either high speed or low speed, said means including a member 54 to determine the position of the mechanism for high speed, for low speed or for stopping, a lever 53 having a formation to engage spaced portions of the member 54, a feeler for the thread or yarn, operative connections between said feeler and a lever 53 to control the position of the latter, and manual means operatively connected to the member 54 to move it into position for high speed, for low speed or for stopping the mechanism.

16. Textile mechanism having means either to drive the same at high speed or at low speed, means to supply a thread or yarn, and means to stop the machine upon predetermined defective condition of said yarn or thread from either high speed or low speed, said means including a member 54, means movable thereby to determine the high speed, low speed or stopping position of the mecl1- anism, a lever 43 having a formation to engage spaced portions of the member 54, a feeler for the yarn or thread, a member to reciprocate said feeler but adapted to be held from reciprocation upon the absence of yarn or thread, and lever means adapted to be moved by interruption of the reciprocating movement of said reciprocatory member to change the position of the lever 53 with respect to the member 54.

17. Textile mechanism having means either to drive the same at high speed or at low speed, means to supply a thread or yarn, and means to stop the machine upon predetermined defective condition of said yarn or thread from either high speed or low speed, said means including a feeler for the yarn or thread, a rod 31 to move the feeler, means tending normally to reciprocate the rod 31 and including a lever 22, 24, lever means carried by the lever 22, 24, and adapted to be shifted in position upon interruption of movement of the rod 31, a lever 41, 43 gover-ned in position by the said lever means, and a member 5% adapted to engage the lever 41, 43, and means adapted to be moved by said member-54 to change the direction of the mechanism.

. 18. Textile mechanism comprising in combination gears respectively to drive the mechanism at high speed and at low speed, a clutch, means to move the same into effective driving relation to the high speed gear or to the low speed gear or into a neutral position, a brake, connections to apply the brake When the clutch is in neutral position, means to supply yarn or thread, a detector for said yarn or thread, and means caused to function by said detector through predetermined defective condition of said yarn or thread to move the .clutch from either high speed or low speed position into neutral position.

19. Textile mechanism comprising in combination, means to drive the mechanism at high speed andat low speed respectively, a clutch adapted to cause the functioning of either the high speed gear or the low speed gear or to be moved into a neutral position, a brake, means for automatically applying the brake when the clutch is in neutral position, means to supply yarn or thread, a detector for said yarn or thread, and means caused to function by said detector throu h predetermined defective condition of sald yarn or thread to move the clutch from either high speed or low speed position into 7 neutral position.

20. Textile mechanism comprising in combination, gears to drive the mechanism at high speed and at low speed respectively, a shaft having two positions, means to move said shaft into one of said positions to cause the high speed gear to function and to move it into the other position to cause the low speed gear to function, means to supply yarn or thread, a detector for said yarn or thread, and means caused to function by said detector through predetermined defective condition of the yarn or thread Whether the high speed gear or the low speed gear be functioning.

21. Textile mechanism comprising in combination, gears to drive the mechanism at high speed and at low speed respectively, a member having three positions, means to move said member into one position to cause the high speed gear to function, into another position to cause the low speed gear to func-V tion, and to a third position to cause the textile mechanism to come to rest, means to supply yarn or thread, a detector for said yarn or thread, and means caused to function by said detector through predetermined defective condition of said yarn or thread to stop the mechanism Whether the high speed gear or the low speed gear be-functioning.

In testimony whereof, I have'signed my name to this specification.

EDGAR r. I-IATHAWAY. 7

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