US1366950A - Weft-carrier-releasing mechanism - Google Patents

Description

E. H. RYON. WEFT CARRIER RELEASING MECHANISM.

APPLICATION FILED MAY 1, 1919.

Patented Feb. 1, 1921.

2 SHEETSSHEET I- E. H. RYON.

WEFT CARRIER RELEASING MECHANISM.

mule/mow FILED MAY I. 1919.

1,366,950. Patented Feb. 1, 1921.

2 SHEETS-SHEET 2.

UNITED STATES PATENT V OFFICE.

EPIPA n. nYoN, or WALTHAM, mnssnonusnrrs. sssfonoa 'ro caonrron & KNOWLES LOOM woaxs, or woacnsrrnn, massncncsn rrs, A. CORPORATION or uessncnusnr'rs.

Y 'WEFT-OARRIER-RELEABING MECHANISM.

Patented Feb. 1, 1921. Application filed May 1, 1919. Serial No. 293,987.

1,366,950, Specification of Letters Patent.

To all whom it may concern Be it known that I, EPPA H. RYON, a citizen of the United States, residing at Waltham, in the county of Middlesex and State of Massachusetts, have invented a new and useful Weft-Carrier-Releasing Mechanism, of which the following is a specification.

This invention relates to a releasing mechanism for a weft carrier magazine, particularly of the stationary multi-color type.

In such magazines a selected weft carrier is advanced to transfer position and is held yieldingly in such position for transfer to the indicated shuttle. If the shuttle is improperly positionedv in the shuttle box, the transfer may be worked by the shuttle feeler and. it is then necessary to release this ad vanced weft carrier so that the magazine may be in condition to replenish any shuttle which may possibly become exhausted be fore the return. of the previously indicated shuttle. This release of a weft carrier after failure of transfer is the normal function of the mechanism herein described. An in-' complete transfer of a weft carrier sometimes occurs, however, leaving a weft carrier v projecting more or less above the edge of the shuttle, in which position it will often engage the weft carrier supporting member as the lay moves backward.

It is the object of my present invention to provide a weftcarrier supporting and releasing member so mounted and controlled that no damage will be caused by a misplaced weft carrier, either to the supporting member or to the weft carrier itself.

With this general object in View, an important feature of my invention consists in the provision of a movably mounted weft carrier supporting member, together with improved controlling means by which its rearward path of travel is determined.

In the preferred form the weft carrier en gaging portion of said member is maintained at a substantially constant distance above the shuttle as the parts move rearward. This prevents movement of any part of the supporting member into the shuttle spacefl where it might be caught and broken as the shuttle is picked.

Another feature of my invention relates to the provision of a link connection preferably arranged with a determinable lost mo tion between the rear or outer end of the supdetermined by porting member and a fixed part of the loom or magazine. Provision is also made for indepen ent yielding movement of the support ng member when engaged by a weft earner which is not widely misplaced.

Further features of my invention relate to arrangements and combinations of parts herelnafter described and more particularly polnted out in the appended claims.

A preferred form of my invention is shown in the drawings, in which-- igure 1 is a side elevation of a portion of a magazme with my improved releasing mechamsm mounted thereon;

F g. 2 is a similar view showing the operatlon of the mechanism when engaged by a sl ghtly misplaced weft carrier, and

Fig. 3 shows the same parts after engagement by a widely misplaced weft carrier.

eferring to .the drawings, I have shown a portion of a stationary magazine frame 10 havmg a projection 11 to which a stand 12 may be secured in any convenient manner. The weft carrier supporting member 13 is pivoted at 14: to the outer end of an arm 15 wlnch in turn is pivotally mounted upon a stud 16 fixed in thestand 12. The weft carrler engaging portion 17 of the member 13 normally projects forwardly in an inclined position, supporting an indicated weft carrier W in the position shown in Fig. 1.

The normal position of the member 13 is an adjustable stop screw 18 threaded in a lug on the arm 15 and engaging a fixed projection 19 011 the stand 12. A coil spring 20 acts on the hub of the arm 15 to hold thestop 18 yieldingly against the projection 19. The arm 15 also has a rearwardly projecting portion 21 connected by a tension spring 22 with the rear or outer .end 23 of the member 13. The spring 22 acts'to hold the member 13 in yielding en gagement with a shoulder 24 in the arm 15. The rear portion 23 of the member 13 is provided with a stud 25 extending through a'slot 26 in a link 27, the upper end of which is pivoted at 28 to the stand 12. The link is preferably ofiset, as shown in the drawings,

" and is provided with an adjusting screw 29 and lock nut 30. The screw 29 projects into the slot 26 and adjustably determines the lost motion between the link 27 and stud 25. Under normal conditions the parts occupy the position shown in Fig. l, supporting an indicated weft carrier W-before transfer.

Time is allowed for a transfer to occur if no revocation prevents, after which the arm 15 is pushed rearward. by a stud 31 (Fig. 1) to release the weft carrier if transfer has failed. The stud 31 forms no part of my invention, and the actuating mechanism therefor is clearly disclosed in my prior Patent No. 1,307 ,024, issuedJune 17, 1919.

If, however, the transferred weft carrier is slightly misplacedin the shuttle, as shown in Fig. 2, the supporting member 13 may be raised by theweft carrier against the tension of the spring 22, permitting the misplaced weft carrier to pass under said member. This movement is rendered possible by the lost motion connection between the link 27 and member 13. The stud 25 is nor.- mally at the upper or inner end of the slot 26, but is moved outward as indicated in Fig. 2 when the supporting member is raised by a slightly misplaced weft carrier.

If, however, a weft carrier is so widely misplaced that it squarely engages the end of the supporting member 13, the member will be pushed rearward by the weft car? rier to the position shown in Fig. 3. The path of movement of the support is determined by the arm 15 and link 27, which parts are so designed that the weft carrier engaging portion 17 of the supporting member follows a substantially straight path, and is maintained at a substantially constant distance above the shuttle.

As the weft carrier support cannot swing downward during its rearward movement it is impossible for it to enter the shuttle space where'it might be caught and broken as the shuttle was'picked from the box. As soon as the support is disengaged by the misplaced weft carrier, the springs 20 and 22 restore the parts to normal position.

While I have herein shown two separate springs 20 and 22, it is found that the single spring 22 is very effective to maintain the parts in normal position. This is due to the fact that the supporting member 13 swmgsaway from the shoulder 24 whenever 1t is moved rearward, due to the action of the link 27. Conversely, the tension of the spring 22 acting to draw the member 13 against the shoulder 241;also acts against the link 27 to advance the member 13 to normal position. The use of the spring 20, therefore, while shown in the drawings, is optional in actual practice.

Havin described my invention, it will be evident t at changes and modifications can be made therein by those skilled in the art within the scope of my invention as expressed in the claims, and I do not wish to be limited to the details herein disclosed,

- but what I claim is- 1. In a loom having a weft carrier magazine, a weft carrier supporting member, an,

' porte arm b which said member is pivotally supporte at an intermediate oint in said member, a fixed pivot for sald arm, a link connected at one end to the outer end of said member-and at the other end to a fixed part, and means to hold said member normally in yielding operative osition.

2. In a loom having a we carrier magazine, a weftcarrier supporting member, an arm b which said member is pivotally supat. an intermediate point in said member, a fixed pivot for said arm, a link connected at one end to the outer end of said member and at the other end to a fixed part,- and a single spring effective to hold operative osition.

3. In a 00m having a weft carrier magazine, a weft carrier supporting member, an arm b which said member is pivotally supported at an intermediate oint in said member, a fixed pivot for said arm, a link forming a lost motion connection between the outer end of said member and a fixed part, and means to hold said member normally in yielding operative position.

4. In a loom having a weft carrier magazine,a weft carrier supporting member, an arm b which saidmember is pivotally supporte at an intermediate point in said member, a fixed pivot for said arm, a link form ing a lost motion connection between the outer end of said member and a fixed part. means to variably determine the amount 0 lost motion between said parts, and means to hold said member normally in yielding operative position.

5. In a loom having a weft carrier magazine, a weft carrier supporting member, an arm by which said member is pivotally supported at an intermediate point in said member, a fixed pivot for said arm, a link having a slotted lost motion connection with the outer end of said member and also mounted to swing about a fixed pivot, means to variably determine the amount of lost motion between said parts, and means to hold said said slot, an adjusting screw in said link extending into said slot and engaging said stud, and means to hold said member normally in yielding operative position, said means including a spring operative to hold said stud normally against said adjusting screw at the inner end of said slot.

7. In a loom having a weft carrier magaits rearward movement and to maintain the weft carrier engaging portion thereof at a substantially constant distance above the shuttle.

8. In a loom having a weft carrier magazine, a Weft carrier supporting member mounted on a movable pivot, means yieldingly resisting rearward movement of said member, and means to guide said member in its rearward movement and to maintain the weft carrier engaging portion of said member at a substantially constant distance above the shuttle, said engaging portion of said member having an additional independent movement away from the shuttle while its pivot remains in fixed position.

In testimony whereof I have hereunto affixed my signature.

EPPA H. RYON.

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