US1627826A - Intermittent feeler in transferrer - Google Patents

Description

May 10 1927. {5272826 H. u; BLANCHARD INTERMITTENT FEELEVR IN TRANSFERRER Filed Oct. 26, 1925 2 Sheets-Sheetl Patented May 10, 1927.

UNITED "STATES PATENT OFFICE.

HAROLD iL. ORA-RD, JOF MILITBU RY,,MASSACHUSETTS, ASSIG-NQR 1T0 'GROMPTQN 8r, KNOWLES 1100M WGREKS, F 'WORCESTER, MASSACHUSETTS, .A CORPORATION iOF MASSACHUSETTS.

inirnnmrr'rnnr FEELEB 2m TZRANSFERRER.

Application filed october 26, 1925. Serial No. 64,756.

This invention relates to weft detecting mechanism for looms and it is the principal object of the invention to provide means for rendering intermittently operative the type of weft detector which is mounted in a regularly reciprocating'transferrer arm. I

In Patent No. 1,372,316 there is shown a multi-color weft replenishing mechanism having a regularly reciprocating transferrer JH arm which is moved down on detecting beats of the lay while the shuttle is under the magazine. A weft detector is mounted on the 'transferrer and detects the condition of yarn'in the active shuttle on the downward 15 stroke of the transferrer arm. means of additional mechanism the tran'sferrer is efiective on its upward stroke to indicate weft exhaustion and themagazine is set for replenishment on a subsequent pick. I

In this type of detector it is found that when very fine yarn is being woven the detector is moved downwardly to strike the surface of the yarn a great number of times before replenishment is called for resulting 25 in fraying of the yarn and itisra further o'bjectof my invention to 'hold the detecting surface out "of contact with the yarn except at periodic intervals so as to avoid undue wear. 7

Patent No. 1,551,219 relates to the same general type of detector and shows a yield i'ng actuator arm which engages one end of the'lever on the transferrer-on which the detector is mounted. It is a more particular object of my invention to provide for holding this actuating arm inoperative while an abundance of yarn is present but rendering the same operative on each detecting beat ofthe lay when a small amount of Weft remains on the bobbin.

Immediately after indication of exhaustion a shuttle might becon'oe inactive but the transferrer mus't c'ontinuet'o receive its periodic descents to be ready to replenish the depleted shuttle when it again "becomes active. order that the -detector will not strike the yarn on its regular :descents Wit-h the 'tran'sferrer it is so held "as normally "to be above the surface of :a full bobbin and will not engage the. surface 'to bedetecteil unless moved the actuator arm. v lVith' these and other objects in view which will appear as thie description proceeds; invention resides in the combination and E11- rangement o'f parts "hereinafter described and set forth in the claims.

In the accompanying drawings wherein I have shown the form of actuating arm illustrated in the second patent above mentio'ned,-

Fig. 1 is an end elevation taken from the interior of the loom of a mu'lti-color weft replenishing mechanism having ,my invention applied thereto, 1

IF 2 is an enlarged section online 2-2 of Fig, '1 showing the detector in normal position when the transferrer arm is at the bottom of its stroke,

F 3 is a fragmentary view looking in the direction of arrow 3, Fig. 2 and showing the relation of the actuating arm and the detector carrying lever when the amount of weft present is small enough to require detect'ion on each alternate beat of the lay,

"Fig. l isa View sim ilar'to Fig. '3 but with the actuating arm shown looked in in0pera 'tive positive, a condition desirable when an abundance of yarn is present in the active shuttle,

vFig. 5 is-top plan view looking in the direction ofarrow 5, Fig. 1,

F 6 is a vertical section on line 66 of Fig. 1, and

fFigf'Z a fragmentary detail view showing a portion of the actuator arm and holding 'de'tent when said arm is locked in, inoperative position as shown in dotted lines in l ig. 1 and full lines in Fig. 4.

Referring to the drawings it will be seen that I have provided a magazine frame 10 having a transferrer arm 11 pivotallymounted on a stud 12 secured to the frame in any approved manner and receiving a downward movement on cletect'ing picks by a suitably actuated rod "13 attached thereto. Vertical slides jl l are con-trolled b e longitudinally and angularlyh ovable color slide 15 which isrmoved longitudinallyby a bell crank lever 16 pivoted at 17 'to a fixed part of the strum ture and actuated by a rod 18 connected with the pattern mechanism :or box motion so as to .keep the color slide '15 in step with the active shuttle.

A stud 19 is fixed to the magazineand has 1ceseiy;rnouutea;ther bell crankflever 20 the horiz ntal arm offwhi'chisemne ted by s of alin'k 21x0 .tl ecolor slid 15 to. give the latter an upward movement every al'ternate beat of the lay while the active shuttle is on the opposite side of the loom. The depending arm of lever is provided with a cam face 22 which cooperates with a plunger 23 slidably mounted in a portion of the transferrer arm which extends substantially parallel to the shuttle.

By referring to Fig. 2 it will be seen that a lever 24 is pivoted as at 25 to the transferrer arm and has pivotally mounted on one end thereof as at 26 a detector arm 27 the detecting surface 28 of which is oiiset vertically from the pivot 26. A rod 29 is interposed between the detector arm 27 and the plunger 23 and is surrounded by a coil spring 30 interposed between a shoulder on the rod and the transferrer arm. Said spring 30 serves to hold the detector arm in the normal position shown in Fig. 2, adjusting screw 31 being interposed between the detector arm and the lever 24 to limit outward movement of the detector under influence of spring 30.

The other end of arm 24 is provided with an ofiset lug 32 seen in Figs. 1, 2, 3, and 4 and is so positioned as to have contact wit-h an actuating arm 33 as the transferrer nears the bottom of its motion, provided said arm 33 is in raised position. A screw 34 extends through the arm 24 and engages a part of the transferrer arm, the lever 24 being held yieldingly in the position shown in Fig. 2 by the spring 30. Said yielding arm 33 is pivoted as at 35 to a fixed part of the replenishing mechanism and is connected as at 36 to an upwardly extending rod 37 which extends through a boss 38 on the frame 10. Upper and lower collars 39 and 40, respectively, are secured to the rod 37 and spring 41 is interposed between .the boss 38 and collar 39 to hold said rod and actuating arm yieldingly in raised position. Collar limits upward movement of the actuating arm under influence of spring 41. Rod 37 is formed with teeth 42 and 43, respectively, which define a notch 44. A plunger 45 is guided in fixed bosses 46 and is held in contact with one or both of said teeth by spring 47.

The rear end of the arm 33 is offset and pivotally connected as at 48 to an upwardly extending link 49 which has a slot 50 receiving a pin 51 on pawl 52 pivoted on an arm 53 at 54. Said arm 53 is secured to the color slide and moves angularly therewith to give the pawl 52 a back and forth motion and also moves said pawl so that the same is brought into operative relationship with respect to one or another of a plurality of ratchet wheels 55, 56, 57, and 58, one ratchet wheel being provided for each color of the magazine. Said ratchet wheels are the same and are freely rotatable upon a stud 59 secured to and extending rearwardly from the frame 10, Each ratchet is provided with a series of teeth 60 and one high tooth 61. A. spring detent 62 may be provided for each ratchet wheel to prevent retrograde movement. Secured to and extending rearwardly from frame 10 is an arm 63 on which the actuating pawl 52 may rest. Said arm 63 is provided with a plurality of humps 64 (Fig. 1) located between the ratchet wheels and so disposed that as the color slide 15 moves longitudinally the pawl will be raised. The stroke of the pawl 52 is somewhatgreater than the distance between adjacent teeth and the pawl is formed substantially as shown in Fig. 6 to allow the high tooth 6 to lie thereunder when said pawl is acting on the tooth immediately in front of the high tooth.

Assuming that the active shuttle has very little yarn left therein lug 32 will be engaged by actuator arm 33 as the transferrer arm, descends and the detector 27 will be moved against the yarn N of the bobbin B. Under these conditions the actuator arm 33 remains at rest, being held in raised position by the combined action of springs 41 and 47 and detector 27 has a detecting movement on alternate picks.

W hen the weft is. depleted detector 27 will slide along the bobbin to move plunger 23 to the dotted line position shown in Fig. 1 to set the magazine as set forth in the aforesaid patents. lVhen the full bobbin is in the active shuttle detector 27 will not be able to move down very far and lug 32 will receive a correspondingly large motion to depress arm 33 and cause plunger 45 to enter notch 44 and hold said actuating arm 33 down as shown in dotted lines in Fig. 1. As plunger 45 enters notch 44 arm 33 is given an additional downward motion and on sub sequent picks is too low to engage lug 32 to move detector 27 against the yarn. Said detector is therefore held out of action as long as arm 33 is depressed.

The actuating arm 33 is periodically restored to actuating position by the action of the ratchet wheels and pawl 52. On every non-detecting pick the color slide 15 will be rocked in a manner as set forth in the aforesaid patents to give said pawl a movement to the right as shown in Fig. 6 and will move the ratchet corresponding to the active shuttle ahead with a step by step motion. The large tooth 61 will ultimately come under the pawl as shown in Fig. 6 and on the return movement the pawl will be raised and pin 51 will lower link 49 to resetthe actuating arm to the full line position shown in Fig. 1. It is to be understood that when arm 33 is downpin 51 rests in the bottom of slot 50. If an abundance of yarn is present the .arm 33 will again be moved outof actiom'but if a small amount of yarn is in the shuttle, the detector 27 will move down far enough so that plunger 45 will not be able to enter notch 14 and the detector will therefore be operative on all detecting picks.

If a full shuttle is to be followed in action by one nearly exhausted, it will be necessary to restore the arm 33 to operative position in order that more frequent detection of the depleted shuttle may occur. This result is accomplished by the humps 64011 the arm As the active shuttle changes there will be an endwise movement of the color slide and the pawl, which moves with the slide, rises as it passes over one or more of the humps. If thefarm '33 down, the rising of the pawl will restore it to normal and if the said arm is already up, pin 51 will move down in slot withoutcommunicating motion to arm 33 because of the fact that under thislatte'r condition pin 51 will be in the top of slot 50.

The useof a series of ratchet wheels, one for each shuttle, to measure the picks laid by each shuttle is shown in cmp'endingapplicatio'n No. 739,713 and forms no part 'of my invention, except that the pawl 52 serves the double function of actuating the ratchets and also giving the indication to reset arm 33. p

My purpose in providing two spring devices each of which is effective to raise actuator arm 33, namely, the spring 41 and the spring plunger 45, is to permit the use. of the mechanism for weaving with relatively heavy yarn. When such a fabric is being Woven there is no necessity for render ing the detector intermittent and under such conditions the plui'iger 4'5 will be moved to the lefta's "shown inFig. 1 and a -c'otter pin or other suitable holding device passed througl'r the hole formed in said plunger and so placed as to hold the same away from the teeth 42 and 43 so that the spring will on all detecting picks operate to hold the actuator arm raised. I do not Wish to be limited to the use of both 'of these devices inasmuch as the am action between the tooth 42 and the plunger 45 would serve to raise the actuator arm if spring e1 were not present provided of course that the connector 87 passed through its guide 38.

Fro-m the foregoing it will he seen that :I have provided means for periodically disabling the actuator arrn 33 to renderthe detector the transfer-fer -'ineperative when an abundance of weftfis present "bu-t that when the supply er wen- 11's depleted the actuator arm will become operative and detector arm 27 will be moved down on every detecting beat of the lay. Also it will be seen that the actuator arm 33 is returned to normal position every time there is a change in the active shuttle. Furthermore, it will be seen that the detector arm 27 is so positioned as to be above a full supply of weft when the transferrer arm is in its lowest position so that when the actuator arm 33 is in inoperative position no portion of the detecting mechanism will engage the bobbin. Having thus described my invention it will be apparent that changes and modifications may be made therein by those'skilled in the art without departing from the spirit and scop'c'of theinvention, and I do not 'wish'to he limited to the details herein disclosed but what I claim is: I 1. In a weft detecting mechanism for lOOll'lS, a weftndetector, a support for said "detector "to move the latter toward the Weft supply on detecting beats of the loom, means normally at ricst to be operatively connected to the detector as the latter is moved toward connected with the detector when a relatively large amount of yarn is present.

In a weft detecting mechanism for looms, a weft detector, 21 support for said detector to move the latter toward the weft supply on detecting beats of the 100111, means normally at rest to he operatively connected to the detector as the latter is moved toward the weft supply and operative when so connected to move the detector into contact with the weft supply, a device to hold said means out of position to be operatively connected with the detector when a relatively large amount of yarn is present, and mechanism to restore said means to the position where the saine will be operatively connected to the detector. I

8. In 'a weft replenishing loom having a transferrer arm movable at regular intervals toward the supply of weft, a weft de tector mounted on the transferr'er arm, means to actuate the detector as the transfe'rrer a'rm moves toward the supply of weft, and a device to render said means inoperative to actuate the detector when a relatively large amount of weft is present.

4. In .We ft replenishing loom having a transferrer arm movable at regular intervals toward the supply of weft, a weft de tector mounted on the transferrer arm, means to actuate the detector as the transferrer arm inoi' 'es toward the supply of weft, admin to render said means inoperative to actuate the detector when a relatively large amount of weft "is present, and mechanism to said ineansto operative position with respect to the detector.

5. In a weft replenishing loom having a transferrer arm movable at regular intervals toward the supply of weft, a weft detector mounted on the transferrer arm'and movable toward the supply of weft with the transferrer arm, an actuator for the detector to render the detector operative to detect when said actuator is in operative position with respect to the detector, and a device to move said actuator out of operative relationship with respect to the detector when a relatively large amount of weft is present.

6. in a weft replenisl'iing loom having a transferrer arm movable at regular intervals toward the supply of weft, a weft detector mounted on the transferrer arm and movable toward the supply of weft with the transferrer arm, an actuator for the detecposition out of operative relation with the detector, and mechanism to return said actuator to operative relationship with respect to the detector.

7. In a weft replenishing loom having a transferrer arm movable at regular intervals toward the supply of weft, a detector mounted on the transferrer arm and movable toward the weft supply as the transferrer arm moves down but held normally out of contact with the weft supply when the transferrer is nearest said supply, an actuator to move the detector against the supply of weft, and means to render said actuator ineffective to actuate the detector when a relatively large supply of weft is present.

8. In a weft replenishing loom having a weft supply to be detected and a transferrer movable at periodic intervals toward the weft supply, a weft detector carried by the transferrer and movable therewith toward the weft supply, and means controlled by the weft to render said detector operative to detect every detecting beat of the loom when a relatively small amount of yarn is present and to detect at less frequent intervals when a relatively large amount of yarn is present.

9. In a weft detector for multi-shuttle looms, a weft detector, a support for said detector to move the latter toward the weft supply on each detecting beat of the loom, means to be operatively connected to the detector when the latter approaches the weft supply and operative when so connected to move the detector against the weft supply, a device to hold said means out of position to be operatively connected to the detector when a relatively large amount of weft is present, and a plurality of controlling elements each effective to act on said device to cause the same to restore the means to operative position with respect to the detector, said controlling elements each being effective to act on the device after a predetermined number of beats of the loom only.

10. In a multi-color weft replenishing mechanism having a transferrer arm movable toward the weft supply on every detecting beat of the loom, a weft detector mounted on the transferrer armand movable therewith toward the weft supply, a support for said detector to move the latter toward the weft supply on each detecting beat of the loom, means to be operatively connected to the detector when the latter approaches the weft supply and operative when so connected to move the detector against the weft supply, a device to hold said means out of position to be operatively connected to the detector when a relatively large amount of weft is present, and a plurality of controlling elements each effective to act on said device to cause the same to restore the means to operative position with respect to the detector, said controlling elements each being effective to act on the device after a predetermined number of beats of the loom only.

11. In a multi-color weft replenishing loom having a series of shuttles any one of which may become active and having also a transferrer arm movable on every detecting beat of the loom toward the weft supply, a weft detector mounted on the transferrer arm and movable therewith toward the weft supply of each shuttle, an actuator to be operatively connected to the detector as the latter approaches the weft supply and effective to move said detector against the weft supply, a device to render said actuator inoperative to act on the detector when a relatively large amount of weft is present, and mechanism to act on said device to cause the same to restore the actuator to operative relationship with respect to the detector whenever the active shuttle changes.

, In testimony whereof I have hereunto affixed my signature.

HAROLD L. BLANCHARD.

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