US2054178A - Means to prevent flight of improperly changed shuttle - Google Patents

Description

R. G. TURNER MEANS'T'O PREVENT FLIGHT OF IMPROPERLYpI-IANGED SHUTTLES Sept. 15, 1936. v

Original Fi led Sept. 15, 1933 r nuentor' Fhchard G-J'urnem ttornegs Patented Sept. 15, 1936 UNITED STATES PATENT OFFICE MEANS TO PREVENT FLIGHT OF IBIPROP- ERLY CHANGED SHUTTLE Richard Greenleaf Turner, Worcester, Mass, as-

signor to Crompton & Knowles Loom Works, Worcester, Mass, a. corporation of Massachusetts Original application September 13, 1933, Serial No. 689,209. Divided and this application July 16, .1934, Serial No. 735,319

4 Claims.

,tles of the different stacks move during or preparatory to the shuttle changing operation. In the form of invention set forth in the aforesaid application I show front and back cells or stacks with the common compartment located under the front cell and in front of the lowest shuttle in the back cell. The latter shuttle is forced positively into the compartment and slides along a supporting platform, being guided by clips or the like which extend around the ends of the shuttles. The bottom shuttle of the front cell is required to fall through a distance somewhat greater than its own height, and there is an opportunity for it to rotate, in which case it may reach the compartment on its side.

In order to prevent this undesired rotation of the front reserve shuttles I have provided means for advancing the bottom shuttle of the rear stack so that the front wall thereof will lie practically in the same plane as the rear wall of the descending front shuttle, mutual engagement of the shuttles preventing rotation.

When the rear cell is empty, there is no engagement such as just described, and I have proposed in the application mentioned to extend the clips to such a position as will enable them to engage a rear ruled surface of the falling shuttle. Should the clips fail to operate as already described there is the possibility that a shuttle may enter the transferring shuttle box on the lay with one of its'sides down. This might happen also if the operator should inadvertently place one of the shuttles on its side when supplying the stack with fresh shuttles. Under these conditions it would be quite desirable to prevent the shuttle from being picked out of the box, or at least picked into the shed.

It is accordingly an important object of my invention to provide a stop on the shuttle box or lay so located as to permit the full sweep of the .scending along surface results in this alignappear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

' In the accompanying drawing, wherein a convenient embodiment of my invention is set forth,

Fig. l is a detailed transverse section taken through the lower part of the shuttle changer magazine and the upper part of the lay, showing the boxes for effecting shuttle change, a reserve tles F and R which are respectively atthe front and rear of the magazine. A delivery finger i0 is movable about an axis H to release the bottom shuttle of the front stack. A clamp I2 acts to engage the shuttle immediately above the bot-f tom one to prevent the descent of the superimposed shuttles of the front stack when the finger I 0 moves to the dotted line position shown in Fig. 1.

.A plunger head 15 actuated through a rod l6 cooperates with the bottom shuttle of the rear stack and extends through the rear wall I"! of the magazine. A lever E8 pivoted at I9 is actuated by mechanism not shown when it is desired to advance a shuttle from the rear stack to compartment C under the front stack. A light spring 28 serves to return the lever and plunger head to normal rear position.

Thehead l5 has two arms 2| and 22, respecwardly beveled surface 25, as shown more particularly in Fig. 1. This bevel extends down to a vertical surface 26 on the head located to engage the rear wall of the bottom shuttle in the rear stack. V

The two stacks are separated by a partition 30 having a front surface 3! in line with the front of the bottom shuttle of the stack R. The advance movement of the latter shuttle when de-,

ment. When so located the shuttle at the bottom of therear stack will engage the rear surface of a falling shuttle from the front stack and cause the same to move correctly to an uptionary magazine M having two stacks of shuttively, each of which has a forwardly and downright position, such as indicated in: dotted lines in Fig. 1.

' late'the movements of the front shuttles.

result may be accomplished by the use of a guard 1 So long as there is-a reserve shuttle in the cell or stack R, the falling front shuttles will be guided as described, but when the-rear stackis empty, it is desirable to have additional means to reguhie 35 which is secured by screws 36 to the plunger head I5; The guard is extended on each side of the head and is bent as shown in Fig. 2 to conform more or less to the shape of the shuttles;

The forward ends of the brace are. bent toward each other as at 31 to form clips the front edges of which as shown at 38 are substantially vertical to engage the rear wall of the front shuttles at points sufficiently removed from the shuttle tips to prevent shuttle rotation. Thesection shown in Fig. 4 illustratesa convenient relation of the holder with respect to that part of ai shuttle having a straight vertical surface, the edges 38 lying against the ruled surface 39 of the'shuttle.

' The guide 35, being mountedon the heal-1J5, jmoves forwardly with the latter so that the extensions 3! move forwardly with an advancing rear shuttleand do not interfere with it.

I The lay L may have top and bottom, boxes 40' and 4 l which as set forth in the aforesaid application, are raised during the shuttle changing 'operationso that the-pivoted cover 42 of the top box can be elevated sufficiently to make a-clear passage'throughthe top of the upper box into which the shuttle in the compartment C may fall. Rearwardly extending supporting fingers 43 may be secured to' the lay and support the shuttle in the compartment C until the top box'arrives in rear position to receive the shuttle. These fingers 43 form no part'of my present invention, but are substantially the samein structureand function as those shown in co-pending application Serial The matter thus far described operates nor-' mally to require a shuttle'moving from the magazine into the top-box lllito retain its proper position so that weaving can continue after the shuttle change. The clip or guard 35 is claimed in application Serial No.=689,20-9, of which this is 'a division.

' If'the shuttle'enters the box improperly and 'should rest on its side, proper weaving can-not.

ensue and it is desirable under these conditions to stop the loom, and the means for jaccompl-ishingthis result, forms the subject matter of the present-application. Bypreventing delivery of the shuttle from the box, the weft stop motion 'not'shown' but well understood can act to prevent weaving by stopping the loom; The picking operation normally occurs before the filling fork comes into action and in order to prevent lbreakage of'the picker stick it is desirable to place the "shuttle arrester so that it will not engage'the' shuttle until the stick has hadits full unobw structed movement. 7 a a In carrying out my invention 1 place a stop '59 'as shown in'Fig. 3' on the lay :sword' l. so

that the lowercurved surface thereof is at suchi a distance above the race 52 as to prevent comj'plete picking of a shuttle which ison its side by the picker stick P, but permitting uninterrupted itslib'ottom. 'In other words, the distance between delivery of a shuttle which 'is properly resting "on the race and the stop 50 is slightly greater than .thehe'ight of the shuttle but less than its breadth, and is also located about a shuttle length from the'inn'er end of the sweep of the pickerstick.

As shown more particularly in Fig. 3, the bottom of stop 50 lies below the side 60 when the shuttle is on its side, but above the top of the shuttle when the latter is on its bottom, "as suggested by dot and dash line 6 5, Fig. 3. The

normal working stroke of the picker stick P is such that it is substantially completed before stop 58' brings the misplaced shuttle to rest.

7 The resistance to shuttle'motion offered by the stop or means 50 will result in loom stoppage by the usual devices so that the incorrectly transaferred shuttle can be inserted properly by hand.

Either the filling stop motion or the protector mechanism can be relied upon to stop the loom. Failure of the shuttle to lay weft willoperate the filling stop motion, and failure of the shuttle to arrive at the opposite side of the loom at the proper time will cause the protector. to stop the loom.

From the foregoing it will be seen that I have provided means for preventing an improperly changed shuttle from becoming active. While the shuttle is intransit from a front cell to the box 40 means are provided either by means of 'a shuttlein the back cell, or by surfaces'independent of the back shuttles, to engage the front moving shuttleand prevent rotation thereof on i its axis. Should the shuttle turn over while moving from the magazine, the stop will prevent the shuttle from being picked into the shed,

after which well-knownstopping mechanism will 7 herein disclosed, but what I' claim is:'

1. In a shuttle changing loom, a lay, a picker moving through a given range of action, a magazinefor reserve'shuttles, a shuttle box on the'la'y its bottom'or side, and a stop on the lay to engage ashuttle placed improperly in the shuttle;

box and on its side as a result eta-faulty move- 1:0 receive from the magazine a shuttle either on ment of the magazine from the shuttlebox, said stop being located adistance from the near end of the range of action of the picker greater thanthe distance between thatpart of the 'shuttle engaged by the picker and that part engaged by'the stop. 2. In a shuttle changing loom having a magaer width than height, a lay'with a shuttle race, a shuttle box on the lay to receive a'reserve shut-,

zine of reserve shuttles each of which is of greattle from the magazine, a picker stickhavi-ng apicking str'okeito drive a shuttle placed into'the shuttle box out of the latter, and astop. located above the shuttle race a distance less'than'the width 7 of the shuttle and greater than the shuttle height, said stop located to engage a misplaced shuttle with the width thereof vertical and at a distance along the lay from the shuttle box sufilcient to the picker' stick to have substantially a complete picking stroke before engaging a mis-.

shuttle from entering the shed of the loom.

' 5. In a shuttle changing loom, a lay, a picker moving through a given range of action, armagazine for reserve shuttles, a shuttle box on the lay to receive a shuttle resting either on its bottom or its side, and a stop on thelayiat the magazine end of the loom to engage a shuttle placed shuttle for the purpose of preventing the which is resting on its side as a result of faulty movement from the magazine to the shuttle box,

of the box whether it be on its side or bottom, and means along the path of the shuttle located above the race sufficiently to be out of the path of a shuttle on its side but positioned to resist movement along the path of a shuttle on its side when the means to pick has reached the end of its range of movement, the shuttle being stopped due to the resistance ofiered by the last named means to the shuttle on its side.

RICHARD G. TURNER.

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